MEH-PPV/ZnO-QDs聚合物太阳电池光伏性能研究  

Study on Photovoltaic Properties of Hybrid MEH-PPV/ZnO-QDs Polymer Solar Cells

作　　者：郭颖[1] 刘桂林[1] 朱华新[1] 严慧敏[1] 朱冰洁[1] 李帅[1] 于海民[1] 孙亚军[1] 李果华[1,2] 

机构地区：[1]江南大学理学院,无锡214122 [2]江苏省(尚德)光伏技术研究院,无锡214028

出　　处：《人工晶体学报》2014年第5期1168-1173,共6页Journal of Synthetic Crystals

摘　　要：采用聚[2-甲氧基-5-(2-乙基己氧基)对苯乙撑](MEH-PPV)以及ZnO量子点(ZnO-QDs)制备了共混的聚合物太阳电池。利用稳态电流-电压测试,结合荧光光谱,研究了ZnO-QDs的含量对电池性能的影响。实验发现电池的性能与ZnO-QDs的含量有密切的关系。随着ZnO-QDs含量的增加,电池的开路电压因为并联电阻的增加而减小,而短路电流呈现先增加后减小的趋势,这是由于ZnO-QDs含量的增加会对电流产生两个相互竞争的影响,一方面,增加的界面面积会提高短路电流,另一方面,团聚现象逐渐严重以及串联电阻的增加会降低短路电流。光伏性能最优化电池的Zno-QD含量是88wt%,此时薄膜厚度约240 nm,在15.8 mW/cm2光照射下的光电转换效率达到0.24%。The device performance of poly （ 2-methoxy-5-（ 2-ethylhexyloxy ）-1,4-phenylenevinylene） （MEH-PPV）/ZnO quantum clots （ZnO-QDs） were studied by steady-state current-voltage measurements, UV-vis absoq3tion and photoluminescence spectroscopy. The results show that the performance was strongly dependent on the content of ZnO-QDs. Increasing the content of ZnO-QDs results in a decreased open circuit voltage due to the increased shunt resistance. And the content of ZnO- QDs imposes two competitive effects to influence the short circuit current density, to enhance it by increasing the donor/acceptor interracial area but to reduce it by promoting the glomeration and series resistance. The optimized content of ZnO-QDs is about 88wt% with ca. 240 nm film thickness, offering a peak conversion efficiency of 0.24% under 15.8 mW/cm2 illumination.

关 键 词：MEH—PPV ZNO QDS 太阳电池 

分 类 号：TK514[动力工程及工程热物理—热能工程]