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以poly(3-hexylthiophene)(P3HT)为电子给体材料, [6, 6]-phenyl-C60-butyric acid methyl ester (PCBM)为电子受体材料, 制备了纯氯苯(CB)溶剂、纯氯仿(CF)溶剂和氯苯/氯仿(CB/CF)不同比例混合溶剂的共混体系太阳能电池. 研究了不同溶剂及不同比例混合的混合溶剂对电池性能的影响. 结果表明:以CB/CF(3/1)为溶剂制备的器件, 紫外可见吸收光谱和器件外量子效率曲线显示出红移现象, 原子力显微图表明P3HT和PCBM间形成良好的相分离结构. 在100 mW/cm2强度光照射下, 其开路电压Voc为0.61 V, 短路电流密度Jsc为9 mA/cm2, 填充因子 FF为57.9%, 能量转换效率PCE为3.2%.We fabricate solar cells based on blends of poly(3-hexylthiophene) (P3HT) as the donor and [6, 6]-phenyl-C60-butyric acid methyl ester (PCBM) as the acceptor using various solvents such as pure chlorobenzene (CB), pure chloroform (CF) and mixed solvent (CB/CF) with different ratios.We investigate the influences of various solvents and mixed solvents with different ratios on the performances of solar cells. The results show that for the device by using a mixed solvent of CB/CF (3/1), its UV-Vis absorption spectrum and external quantum efficiency show a red-shift and its AFM image shows finely structured phase segregation between P3HT and PCBM. We obtain an open circuit voltage of 0.61 V, short circuit current density of 9 mA/cm2, fill factor of 57.9%, and power conversion efficiency of 3.2% under irratiation of light with a strength of 100 mW/cm2.
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Keywords:
- mixed solvents /
- phase segregation /
- red-shift /
- organic photovoltaic cells
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[11] Hoven C V, Dang X D, Coffin R C, Peet J, Nguyen T Q, Bazan G C 2010 Adv. Mater. 22 E63
[12] Yao Y, Hou J H, Xu Z, Li G, Yang Y 2008 Adv. Funct. Mater. 18 1783
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[14] Yang X N, Duren J K J V, Janssen R A J, Michels M A J, Loos J 2004 Macromolecules 37 2151
[15] Alem S, Chu T Y, Tse S C, Wakim S, Lu J P, Movileanu R, Tao Y, Bélanger F, Désilets D, Beaupré S, Leclerc M, Rodman S, Waller D, Gaudiana R 2011 Org. Electron. 12 1788
[16] Ma W L, Yang C Y, Gong X, Lee K, Heeger A J 2005 Adv. Funct. Mater. 15 1617
[17] Zhao Y, Xie Z Y, Qu Y, Geng Y H, Wang L X 2007 Appl. Phys. Lett. 90 043504
[18] Sio A D, Madena T, Huber R, Parisi J, Neyshtadt S, Deschler F, Como E D, Esposito S, Hauff E V 2011 Sol. Energy Mater. Sol. Cells 95 3536
[19] Moulé A J, Meerholz K 2008 Adv. Mater. 20 240
[20] Moulé A J, Meerholz K 2009 Adv. Funct. Mater. 19 3028
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[1] Peng B, Guo X, Cui C H, Zou Y P, Pan C Y, Li Y F 2011 Appl. Phys. Lett. 98 243308
[2] Xiao T, Cui W, Anderegg J, Shinar J, Shinar R 2011 Org. Electron. 12 257
[3] Li G, Shrotriya V, Yao Y, Yang Y 2005 J. Appl. Phys. 98 043704
[4] Baek W H, Yang H, Yoon T S, Kang C J, Lee H H, Kim Y S 2009 Sol. Energy Mater. Sol. Cells 93 1263
[5] AI-Ibrahim M, Ambacher O 2005 Appl. Phys. Lett. 86 201120
[6] Yang X N, Loos J, Veenstra S C, Verhees W J H, Wienk M M, Kroon J M, Michels M A J, Janssen R A J 2005 Nano Lett. 5 579
[7] Yin S G, Yang L Y, Xu X R, Qin W J 2012 Chin. J. Lumin. 33 233 (in Chinese) [印寿根, 杨利营, 许新蕊, 秦文静 2012 发光学报 33 233]
[8] Savenije T J, Kroeze J E, Yang X N, Loos J 2005 Adv. Funct. Mater. 15 1260
[9] Li G, Yao Y, Yang H, Shrotriya V, Yang G W, Yang Y 2007 Adv. Funct. Mater. 17 1636
[10] Shaheen S E, Brabec C J, Sariciftci N S 2001 Appl. Phys. Lett. 78 841
[11] Hoven C V, Dang X D, Coffin R C, Peet J, Nguyen T Q, Bazan G C 2010 Adv. Mater. 22 E63
[12] Yao Y, Hou J H, Xu Z, Li G, Yang Y 2008 Adv. Funct. Mater. 18 1783
[13] Chen F C, Tseng H C, Ko C J 2008 Appl. Phys. Lett. 92 103316
[14] Yang X N, Duren J K J V, Janssen R A J, Michels M A J, Loos J 2004 Macromolecules 37 2151
[15] Alem S, Chu T Y, Tse S C, Wakim S, Lu J P, Movileanu R, Tao Y, Bélanger F, Désilets D, Beaupré S, Leclerc M, Rodman S, Waller D, Gaudiana R 2011 Org. Electron. 12 1788
[16] Ma W L, Yang C Y, Gong X, Lee K, Heeger A J 2005 Adv. Funct. Mater. 15 1617
[17] Zhao Y, Xie Z Y, Qu Y, Geng Y H, Wang L X 2007 Appl. Phys. Lett. 90 043504
[18] Sio A D, Madena T, Huber R, Parisi J, Neyshtadt S, Deschler F, Como E D, Esposito S, Hauff E V 2011 Sol. Energy Mater. Sol. Cells 95 3536
[19] Moulé A J, Meerholz K 2008 Adv. Mater. 20 240
[20] Moulé A J, Meerholz K 2009 Adv. Funct. Mater. 19 3028
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