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- In relation to this article, we declare that there is no conflict of interest.
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Received August 6, 2009
Accepted September 14, 2009
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Optimization of inverted bulk heterojunction polymer solar cells
1School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea 2School of Display & Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Korea 3Advanced Materials and Process Research Center for IT, Sungkyunkwan University, Suwon 440-746, Korea
sungmcho@skku.edu
Korean Journal of Chemical Engineering, March 2010, 27(3), 999-1002(4), 10.1007/s11814-010-0117-7
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Abstract
We have successively fabricated inverted bulk heterojunction polymer solar cells employing ZnO and MoO3 as electron and hole selective layers, respectively. The device structure is ITO/ZnO/P3HT: PCBM/MoO3/Al. Differently from conventional polymer solar cells, ITO and Al work as electron and hole collecting electrodes in this inverted structure, respectively. We have found the optimal thickness of ZnO and MoO3 to be 100 nm and 5 nm, respectively. The highest PCE was obtained to be 3.32% under AM 1.5 illumination at 1,000W/m2, which is the highest PCE of inverted solar cells reported previously in the literature.
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Wong WY, Wang XZ, He Z, Djurisic AB, Yip CT, Cheung KY, Wang H, Mak CSK, Chan WK, Nat. Mater., 6, 521 (2007)
Kyaw, AKK, Sun XW, Jiang CY, Lo GQ, Zhao DW, Kwong DL, Appl. Phys. Lett., 93, 221107 (2008)
de Jong MP, van Ijzendoorn LJ, de Voigt MJA, Appl. Phys.Lett., 77, 2255 (2000)
Wong KW, Yip HL, Luo Y, Wong KY, Lau WM, Low KH, Chow HF, Gao ZQ, Yeung WL, Chang CC, Appl. Phys.Lett., 80, 2788 (2002)
Li G, Chu CW, Shrotriya V, Huang J, Yang Y, Appl. Phys.Lett., 88, 253503 (2006)
Waldauf C, Morana M, Denk P, Schilinsky P, Coakley K, Choulis SA, Brabec CJ, Appl. Phys. Lett., 89, 233517 (2006)
White MS, Olson DC, Shaheen SE, Kopidakis N, Ginley DS, Appl. Phys. Lett., 89, 143517 (2006)
Shrotriya V, Li G, Yao Y, Chu CW, Yang Y, Appl. Phys. Lett., 88, 075308 (2006)
Irwin MD, Buchholz B, Hains AW, Chang RPH, Marks TJ, Natl. Acad. Sci., U.S.A., 105, 2783 (2008)
Tao C, Ruan S, Zhang X, Xie G, Shen L, Kong X, Dong W, Liu C, Chen W, Appl. Phys. Lett., 93, 193307 (2008)
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Waldauf C, Schilinsky P, Hauch J, Brabec CJ, Thin Solid Films., 451-452, 503 (2004)
