不同厚度的活性层及阴极的改变对聚合物太阳电池性能的影响

於黄忠; 温源鑫

doi:10.7498/aps.60.038401

摘要

以MEH-PPV(poly(2-methoxy-5-(2'-ethylhexoxy)-1,4-phenylene vinylene))为电子给体材料, PCBM(1-(3-methoxycarbonyl)-propyl-1-1-phenyl-(6,6)C61)为电子受体材料, 制成了共混体系太阳电池.研究了不同厚度活性层对太阳电池性能的影响.结果表明, 活性层厚度为100 nm时,太阳电池具有最佳性能.活性层厚度的增加,增大了光生电荷的复合,减少了太阳电池的填充因子,从而减少了太阳电

关键词:

太阳电池 /
厚度 /
电极 /
性能

Abstract

The solar cells based on the blend of MEH-PPV(poly(2-methoxy-5-(2'-ethylhexyloxy) -1,4-phenylene vinylene)) and PCBM (1-(3-methoxycarbonyl)-propyl-1-1-phenyl-(6,6)C61) as acceptor were fabricated. The thickness dependence of the performance of solar cells was studied. The results showed that the solar cells with active layer thickness of 100 nm have the best performance. Increasing device thickness resulted in an increase of charge recombination and a lowering of the fill factor, which leads to lower overall power conversion efficiency. The reasons for the S-shaped kink in the thick device were also analyzed. Influence of the cathode material on the performance of the devices was discussed. The results showed that the solar cells using LiF/Al as the negative electrode formed ohmic contacts at the cathode and anode, which favored the collecting of the charge, increased the transmission of the charge and the absorption of solar light, and improved the performance of the solar cell.

Keywords:

solar cell /
thickness /
electrode /
performance

作者及机构信息

於黄忠²,
温源鑫¹

(1)华南理工大学物理系,广州 510640; (2)华南理工大学物理系,广州 510640;华南理工大学亚热带建筑科学国家重点实验室,广州 510640

基金项目: 中国科学院可再生能源与天然气水合物重点实验室(批准号:0907K5),华南理工大学亚热带建筑科学国家重点实验室开放研究项目(批准号:2010KB20)学生研究计划项目(批准号:X2lXD210632W)资助的课题.

Authors and contacts

Yu Huang-Zhong²,
Wen Yuan-Xin¹

(1)Department of Physics, South China University of Technology, Guangzhou 510640, China; (2)Department of Physics, South China University of Technology, Guangzhou 510640, China;State Key Lab of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China

参考文献

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[16]	Yu H Z, Peng J B 2008 Organic Electronic 9 1022
[17]	Zheng L P, Zhou Q M, Deng X Y, Yuan M, Yu G, Cao Y 2004 J. Phys. Chem. B 108 11921
[18]	Tan Z A, Yang C H, Zhou E J, Wang X, Li Y F 2007 Appl. Phys. Lett. 91 023509
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[20]	Shirland F 1966 Adv. Energy. Conversion 6 201
[21]	Mihailetchi V D, Wildeman J, Blom P W M 2005 Phys. Rev. Lett. 94 126602
[22]	Kumar A, Sista S, Yang Y J 2009 Appl. Phys. 105 094512
[23]	Glatthaar M, Riede M, Keegan N, Sylvester-Hvid K, Zimmermann B, Niggemann M, Hinsch A, Gombert A 2007 Sol. Energy Mater. Sol. Cells 91 390
[24]	Gadisa A, Svensson M, Mats R, Inganas O 2004 Appl. Phys. Lett. 84 1609
[25]	Brabec C J, Cravino A, Meissner D, Sariciftci N S, Fromherz T, Rispens M T, Sanchez L, Hummelen J C 2001 Adv. Funct. Mater. 11 374
[26]	Liu J, Shi Y J, Yang Y 2001 Adv. Funct. Mater. 11 420
[27]	Mihailetchi V D, Blom P W M, Hummelen J C,Rispens M T 2003 J. Appl. Phys. 94 6849
[28]	Bassler H 1993 Phys. Status Solidi 175 15
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施引文献

[1]	Yu G, Gao J, Hummelen C, Wudl F, Heeger A J 1995 Science 270 1789
[2]	Chen J W, Cao Y 2009 Acc. Chem. Res. 42 1709
[3]	Li G, Shrotriya V, Huang J S, Yao Y, Moriarty T, Emery K, Yang Y 2005 Nat. Mater. 4 864
[4]	Wang E G, Wang L, Lan L F, Peng J B, Cao Y 2008 Appl. Phys. Lett. 92 033307
[5]	Liang Y, Xu Z, Xia J, Tsai S, Wu Y, Li G, Ray C, Yu L 2010 Adv. Mater. 22 1
[6]	He Y J, Chen H Y, Hou J H, Li Y F 2010 J. Am. Chem. Soc. 132 1377
[7]	Wang Y, Hou Y B, Tang A W, Feng Z H, Feng B, Li Y, Teng F 2009 Nanoscale Research Letters 4 674
[8]	Yu H Z, Peng J B 2008 Chin. Phys. B 17 3143
[9]	Feng Z H, Hou Y B, Shi Q M, Qin L F, Li Y, Zhang L, Liu X J, Teng F, Wang Y S, Xia R D 2010 Chin. Phys. B 19 038601
[10]	Sang G Y, Zou Y P, Huang Y, Zhao G J, Yang Y, Li Y F 2009 Appl. Phys. Lett. 94 193302
[11]	Zhou Y H, Yang Z F, Wu W C, Xia H J, Wen S P, Tian W J 2007 Chin. Phys. 16 2136
[12]	You H L, Zhang C F 2009 Chin. Phys. B 18 2096
[13]	Yu H Z, Peng J B, Liu J C 2009 Acta Phys. Sin. 58 669 (in Chinese)[於黄忠、彭俊彪、刘金成 2009 58 669]
[14]	Zhang Y, de B B, Blom P W M 2010 Phys. Rev. B 81 085201
[15]	Xu M, Peng J B 2010 Acta Phys. Sin. 59 2131 (in Chinese) [徐苗、彭俊彪 2010 59 2131]
[16]	Yu H Z, Peng J B 2008 Organic Electronic 9 1022
[17]	Zheng L P, Zhou Q M, Deng X Y, Yuan M, Yu G, Cao Y 2004 J. Phys. Chem. B 108 11921
[18]	Tan Z A, Yang C H, Zhou E J, Wang X, Li Y F 2007 Appl. Phys. Lett. 91 023509
[19]	Yu H Z, Peng J B, Zhou X M 2008 Acta Phys. Sin. 57 3898 (in Chinese)[於黄忠、彭俊彪、周晓明 2008 57 3898]
[20]	Shirland F 1966 Adv. Energy. Conversion 6 201
[21]	Mihailetchi V D, Wildeman J, Blom P W M 2005 Phys. Rev. Lett. 94 126602
[22]	Kumar A, Sista S, Yang Y J 2009 Appl. Phys. 105 094512
[23]	Glatthaar M, Riede M, Keegan N, Sylvester-Hvid K, Zimmermann B, Niggemann M, Hinsch A, Gombert A 2007 Sol. Energy Mater. Sol. Cells 91 390
[24]	Gadisa A, Svensson M, Mats R, Inganas O 2004 Appl. Phys. Lett. 84 1609
[25]	Brabec C J, Cravino A, Meissner D, Sariciftci N S, Fromherz T, Rispens M T, Sanchez L, Hummelen J C 2001 Adv. Funct. Mater. 11 374
[26]	Liu J, Shi Y J, Yang Y 2001 Adv. Funct. Mater. 11 420
[27]	Mihailetchi V D, Blom P W M, Hummelen J C,Rispens M T 2003 J. Appl. Phys. 94 6849
[28]	Bassler H 1993 Phys. Status Solidi 175 15
[29]	Veenstra S C, Heeres A, Hadziioannou G, Sawatzky G A, Jonkman H T 2002 Appl. Phys. A: Mater. Sci. Process 75 661

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