Efficiency Rise in PCDTBT:PC70BM Organic Solar Cell

Efficiency Rise in PCDTBT:PC70BM Organic Solar Cell Efficiency Rise in PCDTBT:PC70BM Organic Solar Cell Using Interface Additive Rashmi Swami, Rajesh Awasthi, Sanjay Tiwari Abstract Solar cell can be designed with photoactive layer of organic and inorganic materials. Organic materials, particularly polymers, are a promising alternative to traditional semiconductors as the active material for solar cell because of their low cost, low temperature energy processing, low material requirement, can be used on flexible substrate, can be shaped to suit architectural application. Low efficiency is one of the biggest problem with organic solar cell. In order to increase the efficiency of bulk hetero-junction organic solar cell we are using interface surfactant additive poly(oxyethylene tridecyl ether) (PTE) with blend photoactive layer. Here we are reporting on the enhanced photovoltaic (PV) effects by means of a polymer bulk-hetero-junction (BHJ) layer having PCDTBT which is poly(N-9-heptadecanyl-2,7-carbazole-alt-5,5-(4,7-di-2-thienyl-2,1,3†²-benzothiadiazole)) as a low-band gap e’ donor/HTL polymer and PC70BM which is [6,6]-phenyl C70 butyric acid methyl e ster as an acceptor/ETL, doped with poly(oxyethylene tridecyl ether) (PTE) which is an interface surfactant additive. For PCDTBT:PC70BM organic solar cell , we recorded 0.886 V open-circuit voltage (VOC), 11.7 mA/cm2 short-circuit current density (JSC), and 47.3% fill factor (FF) and PCE of 4.9%. For PCDTBT:PCBM70:PTE organic solar cell, we recorded VOC of 0.904 V, higher values of JSC of 13.8 mA/cm2, FF of 48.2% and improved PCE of 6.0% for a PTE concentration of ca. 0.164 wt%. Power conversion efficiency (PCE) reaches to 6.0%, by the addition of PTE to a PCDTBT:PC70BM system which is much higher than a reference device not including the additive (4.9%). Increase in efficiency is because of the increase in lifetime of charge carrier, which is due to the existence of PTE molecules at the interfaces sandwiched between the BHJ photovoltaic active layer and the anode and cathode, in addition to the phase-separated BHJ domains interfaces. Keywords – Organic Solar Cell, PCDTBT, PCBM, PTE, IPCE, Bulk hetero-junction. Introduction The global rising demand for low-priced electricity has triggered deep research on solar cells comprising organic semiconductors. Organic solar cell (OSC) technology has received significant attention over the past decade due to the simple, flexible nature of polymer photovoltaics and the potential to develop a clean, cost-efficient renewable energy source. The key development of organic solar cells has been made with the pioneering concept of ‘‘bulk hetero-junction (BHJ)’’ photoactive layers [1-2].The bulk hetero-junction (BHJ) PSC [1][3] is of particular interest, due to the efficient photo-induced generation of charge in its blended photovoltaic (PV) layer, that is consisted of interpenetrating, channel-like domains of separated fullerene and polymer. Following the annealing of the BHJ structure at elevated temperatures, PSCs with PV layers of P3HT which is poly(3-hexylthiophene) and PCBM60 which is phenyl C61-butyric acid methyl ester have shown high pow er conversion efficiencies (PCEs) of 3-5%. Efficiency of P3HT:PCBM organic solar cell is upto 5% because of the limitations of conventional P3HT, whose bandgap lies at around 1.9 eV, which limits absorbance to wavelengths below 650 nm [4]. To improve the efficiency of PSC we need new active materials having lower bandgap to harvest more solar photons. More recently, a PCE of 5-6% was reported for a BHJ PSC that used a blend of PCBM70 and PCDTBT having a bandgap of 1.88 eV [5,6]. Using ‘processing additives’ PCE of organic solar cell can be increased [7-9]. To increase carrier lifetimes (reduce recombination loss) we modify the BHJ interfaces between the phase-separated domains of the donor-conjugated polymer and the acceptor fullerene, and added a non-ionic surfactant poly(oxyethylene tridecyl ether) (PTE) as an additive to the PV layer. In this paper we investigated J-V characteristic and IPCE spectra of PCDTBT:PC70BM organic solar cell with and without PTE. 1.1 Donor molecule Next generation HTL/donor material for organic photovoltaics is Poly[[9-(1-octylnonyl)-9H-carbazole-2.7-diyl]-2.5-thiophenediyl-2.1.3 benzothiadiazole-4.7-diyl-2.5-thiophenediyl] (PCDTBT) shown in Fig. (1) which can produce better efficiencies and lifetimes. The main qualities of PCDTBT are lower HOMO and LUMO levels narrow band gap Increased open circuit voltage Longer wavelength absorption Lower concentration and material usage Improved stability under ambient conditions High electron and hole generation rate and high mobility of electron and hole. Fig. 1. Molecular structure of PCDTBT. 1.2 Acceptor molecule Extremely symmetrical cage-shaped molecules of carbon atoms is Fullerenes as shown in Fig. (2). For the separation of photoexcited exciton into free charge carriers blending of conjugated polymers (electron donor) with fullerenes (electron acceptors), is extremely efficient way. Fig. 2. Molecular structure of PC70BM. 1.3 PTE additive Poly(oxyethylene tridecyl ether) (PTE) shown in Fig. (3) as an additive have low (- 8.1 eV) highest- occupied-molecular-orbital (HOMO) and high (à ¯Ã¢â€š ¬Ã‚ ­2.1 eV) lowest-unoccupied-molecular- orbital (LUMO) [10–12]. Fig. 3. Molecular structure of PTE. Experimental Details The sample BHJ PSCs were fabricated in a sandwich structure with an anode of indium tin oxide (ITO) and an Al:Li/Al cathode. Patterned 80-nm-thick ITO glass was cleaned by sequential ultrasonic treatment in detergent, deionized water, acetone, and isopropanol, and then treated in an ultraviolet-ozone chamber for 15 min. Then, a ca. 40-nm-thick hole-collecting PEDOT:PSS buffer layer was spin-coated onto the ITO electrode. On the top of the PEDOT:PSS layer spin coat the blended solution of PCDTBT (0.456 wt%), PCBM70 (1.824 wt%), and PTE additive in dichlorobenzene. The PV layer was about 85 nm thick. Finally, for the cathode, a ca. 1-nmthick Al:Li alloy (Li: 0.1 wt%) layer and a pure Al (ca. 50-nm-thick) layer were created on the photovoliaic layer through thermal deposition (0.5 nm/s), at a foundation pressure below 2Ãâ€"10-4 Pa. The sample device structure studied was therefore [ITO/PEDOT:PSS/PCDTBT:PC70BM:PTE/Al:Li/Al] as shown in Fig. (4). The active area of the fabricated device was 3Ãâ€"3 mm2. For comparison, a reference PSC was fabricated with the structure [ITO/PEDOT:PSS/PCDTBT:PC70BM/Al:Li/Al] as shown in Fig. (5). In 100 mW/cm2 illumination intensity produced by an AM 1.5G light resource, the performance of the PSCs was measured,. With the help of a source meter (Keithley 2400) the photocurrent-versus-voltage (J-V) characteristics were measured. The IPCE (incident photon-to-current collection efficiency) spectrum were measured for the PSCs studied using an IPCE measurement system. Fig. 4. ITO/PEDOT:PSS/ PCDTBT:PC70BM:PTE /Al:Li/Al Organic Solar Cell. Fig. 5. ITO/PEDOT:PSS/ PCDTBT:PC70BM /Al:Li/Al Organic Solar Cell. Results And Discussion As shown in Fig. (6) for PCDTBT:PC70BM organic solar cell , under an illumination of AM 1.5G and 100 mW/cm2, we recorded 0.886 V open-circuit voltage (VOC), 11.7 mA/cm2 short-circuit current density (JSC) and 47.3% of fill factor (FF) and PCE of 4.9% a value comparable with those reported by others [6]. For PCDTBT:PC70BM:PTE organic solar cell, we recorded VOC of 0.904 V, higher values of JSC of 13.8 mA/cm2, FF of 48.2% and improved PCE of 6.0% for a PTE concentration of ca. 0.164 wt%. These increased values resulted in an improved efficiency of 6.0%, which led to a PCE that was up to 22% higher than that of PCDTBT:PC70BM based organic solar cell. Fig. 6. The current-voltage characteristics of BHJ OSCs with and without the PTE additive. We further investigated the PV performance of the OSCs that incorporated the PTE additive by studying the IPCE spectra. Fig. (7) shows the observed IPCE spectrum of the PSC devices. It can be seen that the IPCE values are consistent with the variations in JSC for the OSCs with and without the PTE additive. The maximum IPCE was 73.0% at 470 nm for the sample device with the PTE additive, which corresponded to the highest JSC (13.8 mA/cm2 ), while the IPCE value was about 60.9% for the reference device without the additive, which had the lowest JSC (11.7 mA/cm2 ). Fig. 7. IPCE spectra of PCDTBT:PC70 BM OSCs with and without the PTE additive. Conclusions In conclusion, we have reported on the use of a low-bandgap PCDTBT:PC70BM-based PV layer that incorporates a PTE surfactant, which was used to the BHJ interfaces in OSCs. We have shown that BHJ OSCs that contain the interface PTE additive are more efficient than conventional OSCs. A high PCE (6.0%) was obtained for our PCDTBT:PC70BM (1:4 w/w) OSC device using 0.164 wt% of the PTE additive, which yielded improvements in PCE of up to 22%. This improvement may be attributed to the increased selective flow of dissociated charge carriers, not only at the interfaces of the PV layer and the electrodes, but also at the BHJ interfaces between the PCDTBT and PC70BM domains. Our findings show that a combination of PTE interface additives and high-performance low-band gap PV materials holds great potential for the development of a new generation of highly efficient OSCs. References [1] G. Yu, J. Gao, J.C. Hummelen, F. Wudl, A.J. Heeger. Polymer Photovoltaic Cells:Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions. Science, New Series, 1995, 270(5243): 1789-1791. [2] J.J.M. Halls, C.A. Walsh, N.C. Greenham, E.A. Marseglia, R.H. Friend, S.C. Moratti, A.B. Holmes. Efficient photodiodes from interpenetrating polymer networks. Nature, 1995, 376: 498–500. [3] C. J. Brabec, N. S. Sariciftci, and J. C. Hummelen. Plastic solar cells. Adv. Funct. Mater. 2001, 11(1): 15–26. [4] K. M. Coakley and M. D. McGehee. Conjugated polymer photovoltaic cells. Chem. Mater., 2004, 16(23): 4533–4542. [5] S. H. Park, A. Roy, S. Beauprà ©, S. Cho, N. Coates, J. S. Moon, D. Moses, M. Leclerc, K. Lee, and A. J. Heeger. Bulk heterojunction solar cells with internal quantum efficiency approaching 100%. Nat. Photonics, 2009, 3(5): 297–302. [6] J. Zhou, X. Wan, Y. Liu, F. Wang, G. Long, C. Li, and Y. Chen. Synthesis and photovoltaic properties of a poly(2,7-carbazole) derivative based on dithienosilole and benzothiadiazole. Macromol. Chem. Phys., 2011, 212(11): 1109–1114. [7] J. Peet, J. Y. Kim, N. E. Coates, W. L. Ma, D. Moses, A. J. Heeger, and G. C. Bazan. Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols. Nat. Mater., 2007, 6(7): 497–500. [8] G. Garcia-Belmonte and J. Bisquert. Open-circuit voltage limit caused by recombination through tail states in bulk heterojuction polymer-fullerene solar cells. Appl. Phys. Lett., 2010, 96(11): 113301. [9] Y. Liang, Z. Xu, J. Xia, S.-T. Tsai, Y. Wu, G. Li, C. Ray, and L. Yu. For the bright future-bulk heterojunction polymer solar cells with power conversion efficiency of 7.4%. Adv. Mater. (Deerfield Beach Fla.), 2010, 22(20): E135–E138. [10] Y. I. Lee, M. Kim, Y. Ho Huh, J. S. Lim, S. Cheol Yoon, and B. Park. Improved photovoltaic effect of polymer solar cells with nanoscale interfacial layers. Sol. Energy Mater. Sol. Cells, 2010, 94(6): 1152–1156. [11] B. Park, Y. H. Huh, and M. Kim. Surfactant additives for improved photovoltaic effect of polymer solar cells. J. Mater. Chem., 2010, 20(48): 10862–10868. [12] J. H. Park, S. S. Oh, S. W. Kim, E. H. Choi, B. H. Hong, Y. H. Seo, G. S. Cho, B. Park, J. Lim, S. C. Yoon, and C. Lee. Double interfacial layers for highly efficient organic light-emitting devices. Appl. Phys. Lett., 2007, 90(15): 153508.

Disembodied Existence After Death Is Entirely Possible

Lauren Cole ‘A disembodied existence after death is entirely possible’ Discuss. Plato takes a dualist view and therefore believes that a disembodied existence is entirely possible and the soul is distinct from the body. At our death, the soul is set free from the body where it has been ‘imprisoned’ and it is now able to achieve its ultimate goal and reach the world of the forms. The soul is the only immortal part of the body and survived the world of the forms before it came entrapped in the body, thus when we learn we are simply recalling what our soul knew before.Plato holds a negative view of the body as it distracts the soul from seeking the forms with its trivial worldly desires such as sex. If we want to be true philosophers we need to avoid distractions and concentrate on gaining knowledge of the forms. In order to further explain this Plato uses the chariot analogy in which the mind and body are out of control horses and the soul is being driven by t he in the chariot so needs to reign them in and control them.The soul outside of the body is simple and without parts yet the soul inside the body is complex and has different aspects such as reason, spirit and desire. Peter Geach disagreed with Plato and questioned what is can mean for the disembodied soul to see the forms, given that seeing is a process linked to the body and the bodies’ senses. Plato has two main arguments to prove the existence of the soul; the first is the argument from knowledge which argues that learning is simply remembering what the soul has previously known in the world of the forms.We just need to remember it, and this shows that things exist before we learn them for example; gravity existed before we knew it. However, many people argue that learning is not a matter of remembering, but instead is a matter of acquiring new knowledge. The second is the argument for opposites in which Plato argued that the physical world consists of opposites such as big and small, light and dark, sleeping and waking. The opposite of living would be death, yet for death to be an actual thing and not just nothing, the soul must exist.Aristotle believed that the soul in the form and shape of the body and is a substance like matter because matter can be given a form and be many different things, but what gives matter its function is its form. By suggesting this, Aristotle means that; the soul gives shape to the matter which is the body and the soul is the principle of life or activity of the body. Aristotle argued that there is a kind of hierarchy of faculties in the soul and suggested that the faculties are nutrition, perception, desire, locomotion and intellect.Plants have the faculty of nutrition, they obtain food and this is what keeps them alive however, animals not only have this capacity but also other capacities such as perception and desire. The faculty of intellect distinguishes humans on the hierarchy. Thus he believes that the soul is à ¢â‚¬Ëœthe cause and principle of the living body’ and therefore it cannot survive after death as the Form of the body is inseparable from the body. However, confusion has been caused as Aristotle did suggest in his writings that intellectual thought could possibly be separated from the soul and be eternal.The identity theory claims that mental activities are centred in the brain and this is supported by scientific research surrounding the modification of mood, character and behaviour by drugs. If drugs affect our character surely this suggests mental activity is not linked to an immortal soul or a separate identity, but to the brain. Hence, when physical life ends, mental activity ends and we cease to exist and have knowledge. This theory has been criticized by T.Davis who argues that identity theory has been concurring how ‘intentionality’ can be explained. Brain activity does consist of nerves functioning in the brain and when you make a decision you form an in tention, yet neural activity has no intentionality, therefore perhaps a soul or other entity controls our intentionality. Davis also points out that mental events are private and have no physical location as they are very personal to the individual.Although Richard Dawkins was a strict atheist he believed in a disembodied existence after death for other reasons, arguing that individuals cannot survive death completely, but do continue to live through memories and genes. He points out that genes do not have any direction although they are ‘potentially immortal’ as they are ‘the basic unit of natural selection’. For those that do not believe in religious teachings, Dawkins theory is convincing as we remember those that have died through many generations and their genes have also been passed down through their family.

Brenda’s Flight Essay

As Gregor saw his many legs waving in the air it symbolizes the rejection of different people because as a traveling salesman he used to move constantly from one place to another and in the habit of waking up in unfamiliar surroundings and various circumstances. He must show his patience, perseverance and eagerness to induce many customers because from that he can earn his living. But as we all know not all the people that we used to mingle with can accept and entertain us positively. The weight on Gregor’s life represents the resistance to change in family tradition that he is the financial head of the household; nobody else probably works in his family; their whole present and comfortable existence relies upon Gregor’s employment. Most of his burden is the debt which his father owes to the employer for whom Gregor now works. His mere condition shows the exploitation of one by many because the reactions of his own family revealed that he is just an impending burden to them. They care for him but they are so horrified by his presence that’s why they take to shutting Gregor into his room. They tend to shrink back whenever he reveals himself and his father embedded one of the apples in his back, causing an infection. As he hides himself underneath a sheet is the metaphor for rejection of sick people because it attests that he is afraid to see and to be seen by other people because of that his family becomes the jailer, they locked Gregor in from the outside. Though bereft of human contact, he is still concern for his family and at the same time mad at them for neglecting him. We can de – humanize our enemies by letting them realize their fault and shortcomings; in short we try to touch their conscience. Just like the way Gregor did in this story, he would have left his family out of love and taken their burden away. He returns to his room and collapses, finally giving in to his wound and starvation. I think he did that for one good reason to open the mind of his family that during the days of helping them and even sacrificing for their benefits, he didn’t even murmured or ask something in return coming from them. The Nazi treatment of Jews in the hand of Germany headed by Hitler was violent and so bloody. Hitler called the Jews as his enemies. Enemy defined as opponent or hostile nation. When we called somebody as an opponent it simply meant that we must do something that would hurt them, made them miserable and finally killed them. These are the objectives of Hitler to all his enemies. He pursued boycotts for the Jewish shops and businesses in ! 933; in 1934, the law banned all the Jewish form public places; plundered the Jewish teachers, civil servants and lawyers. Some of the maltreatments were removing the privilege to the Jews to become a German citizen; restriction of inter racial marriage;working and holding property in Germany; the assassination of many Jews and yet penalizing them. The reason why all of these things happened because of selfish desire and greediness. These are not good if many would suffer and be affected by covetousness and hatred. Hostility toward or discrimination against Jews as a religious, ethnic, or racial group is considered as the meaning of anti – semitism. The anti – Semitism in Europe was almost the same predicament of that in the Nazi, Germany. The hatred to the Jews that’s inside their heart becomes deeper and deeper. One example of this was a soccer match between the Israeli and Belgian national teams in Hasselt, Belgium, when Muslim fans waved Hamas and Hezbollah banners, and chanted: â€Å"Jews to the gas chambers! † and â€Å"Strangle the Jews! â€Å"(taken from the Cancer of Anti – Semitism in Europe). We can conclude in this simple illustration that the hatred developed in the past still lingers in the present situation. The suppression of one’s freedom and stepping onto the human rights of a person developed them in two personalities: they may become weak and dependent while on the other hand a person may possess a strong will to fight and defend himself from his enemies. According to Iris Bruce and Cassill, many interpretations of Franz Kafka’s writings have accentuated their psychological, religious, existential and moral dimensions and initiated a whole genre of the kqfkaesque which summon up associations of the grotesque and absurd but is rarely associated with a sense of humour. A ‘Kafkaesque,’ or Kafka-like situation being one of a strange or nightmarish quality become a part of the language from Kafka’s name. Generally, after World War II (and fundamentally due to the prominence of New Criticism and Existentialism in the literary academies during this time), a Kafka myth has crystallized which stresses Kafka’s existential anguish: interpretations, be they religious, phenomenological, existentialist, symbolic or allegorical, center on the psychology of the author, who is presented as being overcome by the sense of absurdity and alienation so prevalent in twentieth. Where this metaphysical approach in literary translation as a discipline has been most detrimental is in its emphasis on the â€Å"universal† rather than on specific textual elements, in the fascination with Kafka’s personal neuroses, in the mingling of psychological speculation and literary criticism which frequently led to a â€Å"false confusion of empirical and literary selves† and most importantly in its overall disregard of the playful and humorous dimension in Kafka’s texts. Conclusion Kafka’s wanted to share the reality that is happening into our life or others life particularly in our society nowadays. The Metamorphosis was all about Gregor Samsa. This story emphasized the way a man entered the world of despised and how discrimination created hostility. Even his own family tired to suppressed, despised and hurt him not only physically but mentally. The same with our society, the persons who are in the authority sometimes take advantage of everything even to the point that they stepped onto the human rights and privilege of a person. Loving something or someone because you profit from them will not be a good foundation because what if the proceed is gone, are you going to hate him or still love him? Conflict is always present if the environment that we used to stay with is not that aware that justice must be offer to everyone. Hurting people or even killing them without important reason, it’s simply because of selfish desire and hatred won’t make any sense in reality. Instead of doing those things, why don’t we learn to love and forgive them? In the end, we’re going to realize that love is the answer in any changes or metamorphosis that will happen in to our life. Love conquers hatred. Works Cited Peter Kuper Kafka’s The Metamorphosis http://www. randomhouse. com/crown/metamorphosis/ Walker, Jews in Nazi Germany http://www. schoolhistory. co. uk/lessons/germany/jews. html Understanding the Treatment of Jews during World War II http://www. dummies. com/how-to/content/understanding-the-treatment-of-jews-during-world-w. html Edward B. Donnell Jr. , Anti-Semitism in Europe Today http://www. state. gov/p/eur/rls/rm/38113. htm The Cancer of Semitism in Europe http://www. aish. com/societyWork/society/The_Cancer_of_Anti-Semitism_in_Europe. asp

The Heart Of Darkness By Joseph Conrad - 2279 Words

When you hear of the word â€Å"darkness†, what do you think of? The simple definition of â€Å"darkness† is the lack of presence of light. In â€Å"The Heart of Darkness† by Joseph Conrad, â€Å"darkness† is relevant throughout the text. â€Å"Darkness† is evident in many of the themes and even the setting of the text. The biggest theme of the text is imperialism. If we were to rewind many years back, imperialism was one of the darkest times. During imperialism, the â€Å"civilized† countries have invaded the â€Å"uncivilized† countries to exploit the indigenous people of the â€Å"uncivilized† country. Along with the exploitation of the indigenous people many of them were killed. Just learning about the age of imperialism filled the classroom with clouds of darkness. How can someone be so dark? In the text Joseph Conrad tries to contrast light from dark and white from black. Conrad makes it clear that he does not support the darkness imperialism brought to the world. Conrad uses â€Å"darkness† throughout the text in many different situations, this paper will analyze the different purposes and different styles used when Conrad introduces â€Å"darkness† in the text. One key use of the term â€Å"darkness† is to symbolize the unknown. Conrad employs the style of keeping the names of characters secretive. Conrad begins and ends the text with an unnamed narrator. He continues this style by leaving many other characters unnamed and calling them by the job they do. For example, he uses helmsman, accountant, lawyer, doctor andShow MoreRelatedHeart Of Darkness By Joseph Conrad1471 Words   |  6 PagesIn the story Heart of Darkness by Joseph Conrad a sailor decides to travel to Africa on a whim, using family connections he enlists as the captain of a ship travelling up the Congo River. The novella provides many themes, however is the text in itself racist? One of the main concepts portra yed in Heart of Darkness is the treatment of the natives of Africa and their image. This is most commonly shown through the disparity of the image between what is said in the novel and what can be read throughRead MoreHeart Of Darkness By Joseph Conrad Essay1371 Words   |  6 Pagesevery human and everything created by humans has two sides to it: the form and the substance. Joseph Conrad’s novella â€Å"Heart of Darkness† shows precisely how dangerous it is to put our trust in a concept, for example: colonization, without realizing that most of the time one only gets to see the form and not the substance. In this essay, my purpose is to demonstrate that â€Å"Heart of Darkness† by Joseph Conrad is mainly a novella about the discrepancy between substance and form. In order to prove my pointRead MoreHeart Of Darkness By Joseph Conrad1378 Words   |  6 PagesWoytassek AP English 12 Heart of Darkness Reading Log Author: Joseph Conrad Title: Heart of Darkness Original Publication Date: 1899 Kind of Writing: Heart of Darkness is a colonial novella of an expository narrative. Writer’s Purpose and Intended Audience Joseph Conrad wrote Heart of Darkness because he wanted to expose human temptation to experiment with darkness when one’s own desires overcome one’s morals. By writing from his own experience of exploring the Congo, Conrad draws conclusions thatRead MoreThe Heart Of Darkness By Joseph Conrad983 Words   |  4 PagesThe Heart of Darkness by Joseph Conrad is a story that takes place in the early 1890s and presents us with an odyssey of a traveler known as Marlow who confronts the dangers of the Congo jungle while also witnessing the wicked, inhumane treatment of the African natives. In the story, Marlow represents Joseph Conrad who had actually traveled up the Congo in 1890 and witnessed the European exploitation of the African natives firsthand. In the Heart of Darkness, Joseph Conrad exposes the inhumanityRead MoreHeart Of Darkness By Joseph Conrad1350 Words   |  6 Pagesyears, Heart of Darkness by Joseph Conrad was a treasured classic, with many honourable themes and messages, as the author reveals the true nature of humanity by following an European sailor’s journey through the dark jungles of Africa and down the river Congo, all while watching as his own humanity changes. As society has evolved, however, Heart of Darkness has come under scrutiny, as the language is quite racist. Chinua Achebe, writer of An Image of Africa: Racism in Conrad’s Heart of DarknessRead MoreHeart of Darkness by Joseph Conrad1329 Words   |  5 Pages Heart of Darkness is a novel written by Joseph Conrad. 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European’s superior authority over African Americans is portrayedRead MoreHeart Of Darkness, By Joseph Conrad1306 Words   |  6 PagesWhat is the â€Å"horror† in Heart of Darkness, and what particular literary images develop that idea of horror in the novel? In Joseph Conrad’s, Heart of Darkness, there can be many literary images found within that develop the idea of horror. Heart of Darkness is noted for its horror within the Congo between the Africans and the Europeans. The horror in Heart of Darkness is a contribution of many ideas that are formed and contributed from the European colonists. The purpose of this essay aims to argueRead MoreHeart Of Darkness By Joseph Conrad1076 Words   |  5 PagesWritten in the late 1800’s, Joseph Conrad’s Heart of Darkness is a novella about one man’s travel into the Congo Free State by way of the Congo River. The title â€Å"Heart of Darkness† actually holds two different meanings. Heart of Darkness is both a metaphor for a psychological â€Å"dark side† of man, and an allusion to Africa. The title suggests both a physical and mental reference. During the time the novel takes place, Africa was nick-named the dark continent because of how little the Europeans knewRead MoreHeart Of Darkness By Joseph Conrad Essay1483 Words   |  6 PagesJoseph Conrad, author of Heart of Darkness, intriguingly uses an unnamed narrator in his novel that clearly becomes of importance right away in the introduction. Conrad’s narrator chooses to speak of the historical period in which Roman colonization took over what we now know as Great Britain. By connecting a Roman colonization story to one almost 2000 years later talking about the Belgians in Africa, Conrad reveals one of his own themes in the novel. He proposes that the Romans and Belgians