作　　者： ; ; ; ; ; ;

机构地区： 河北大学物理科学与技术学院

出　　处： 《物理学报》 2013年第1期225-229,共5页

摘　　要： 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100mW/cm2强度光照射下,其开路电压Voc为0.61V,短路电流密度Jsc为9mA/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 mixedsolvent （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 absorptionspectrum 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.

关 键 词： 混合溶剂 相分离 红移 有机光伏电池

领　　域： [理学] [理学]