Enhancement of performance of P3HT:PCBM based polymer solar cell by Ag2O/PEDOT:PSS composite buffer layer
Liu Zhi-Fang1 2, Zhao Su-Ling1 2, Xu Zheng1 2, Yang Qian-Qian1 2, Zhao Ling1 2, Liu Zhi-Min1 2, Chen Hai-Tao1 2, Yang Yi-Fan1 2, Gao Song1 2, Xu Xu-Rong1 2
1. Key Laboratory of Luminescence and Optical Information Beijing Jiaotong University, Ministry of Education, Beijing 100044, China;
2. Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
Ag2O/PEDOT:PSS used as the anode buffer layer is introduced into the P3HT:PCBM based polymer solar cell (PSC). Effect of the Ag2O/PEDOT:PSS composite anode buffer layer on the device performance is investigated. According to the results, we can find that the post-thermal annealing can improve the performance of the PSC with Ag2O/PEDOT:PSS anode buffer layer compare with that without buffer layer. In addition, compared with the devices without such a buffer layer or with only PEDOT:PSS buffer layer, the device with the composite buffer layer can achieve higher Jsc, external quantum efficiency as well as power conversion efficiency. We conclude that the post-thermal annealing can significantly improve the surface morphology which increases the light absorption and the exciton dissociation. The inserted Ag2O together with PEDOT:PSS as the composite buffer layer not only efficiently lowers the hole extraction barrier and improves the hole collection efficiency but also exhibits excellent stability.
Project supported by the Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20130009130001), the New Century Excellent Talents in University, China (Grant No. NCET-10-0220) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2012JBZ001).
Liu Zhi-Fang,Zhao Su-Ling,Xu Zheng et al. Enhancement of performance of P3HT:PCBM based polymer solar cell by Ag2O/PEDOT:PSS composite buffer layer. Acta Phys. Sin, 2014, 63(6): 068402.
Sariciftci N S, Smilowitz L, Heeger A J, Wudl F 1992 Science 258 1474
[2]
Kim J Y, Lee K, Coates N E, Moses D, Nguyen T Q, Dante M, Heeger A J 2007 Science 317 222
[3]
Zhang C F, Tong S W, Jiang C Y, Kang E T, Chan D S H, Zhu C X 2008 Appl. Phys. Lett. 93 043307
[4]
Zhang T H, Zhao S L, Piao L Y, Xu Z, Ju S T, Liu X D, Kong C, Xu X R 2011 Chin. Phys. B 20 038401
[5]
Xiong C, Yao R H, Geng K W 2011 Chin. Phys. B 20 057302
[6]
He Z C, Zhong C M, Su S J, Xu M, Wu H B, Cao Y 2012 Nat. Photon. 6 591
[7]
Schlatmann A R, Floet D W, Hilberer A, Garten F, Smulders P J M, Klapwijk T M, Hadziioannou G 1996 Appl. Phys. Lett. 69 1764
[8]
Yang Q Q, Zhao S L, Xu Z, Zhang F J, Yan G, Kong C, Fan X, Zhang Y F, Xu X R 2012 Chin. Phys. B 21 128402
[9]
Goh C, Scully S R, McGehee M D 2007 J. Appl. Phys. 101 114503
[10]
Xiao Z G, Zeng X S, Guo H M, Zhao Z F, Shi T F, Wang Y Q 2012 Acta Phys. Sin. 61 026802 (in chinese) [肖正国, 曾雪松, 郭浩民, 赵志飞, 史同飞, 王玉琦 2012 物理学报 61 026802]
[11]
Turak A, Aytun T, Ow-yang C W 2012 Appl. Phys. Lett. 100 253303
[12]
Barik U K, Srinivasan S, Nagendra C L, Subrahmanyam A 2003 Thin Solid Films 429 129
[13]
Chen C W, Hsieh P Y, Chiang H H, Lin C L, Wu H M, Wu C C 2003 Appl. Phys. Lett. 83 5127
[14]
Hsieh S N, Kuo T Y, Chong L W, Wen T C, Yang F S, Guo T F, Chung C T 2009 IEEE Photonic. Tech. L 21 109
[15]
de Jong M P, van Ijzendoorn L J, de Voigt M J A 2000 Appl. Phys. Lett. 77 2255
[16]
Reese M O, Gevorgyan S A, Jorgensen M, Bundgaard E, Kurtz S R, Ginley D S, Olson D C, Lloyd M T, Moryillo P, Katz E A, Elschner A, Haillant O, Currier T R, Shrotriya V, Hermenau M, Riede M, Kirov K R, Trimmel G, Rath T, Inganas O, Zhang F L, Andersson M, Tvingstedt K, Lira Cantu M, Laird D, McGuiness C, Gowrisanker S, Pannone M, Xiao M, Hauch J, Steim R, DeLongchamp D M, Rosch R, Hoppe H, Espinosa N, Urbina A, Yaman-Uzunoglu G, Bonekamp J B, vanBreemen A J J M, Girotto C, Voroshazi E, Krebs F C 2011 Sol. Energy Mater. Sol. Cells 95 1253
[17]
Jo J, Na S I, Kim S S, Lee T W, Chung Y, Kang S J, Vak D, Kim D Y 2009 Adv. Funct. Mater. 19 2398
[18]
Li G, Shrotriya V, Yao Y, Yang Y 2005 J. Appl. Phys. 98 043704