混合溶剂对基于PCDTBT∶PC71BM光伏器件性能的影响

发布时间：2018-04-23 02:09

本文选题：有机太阳电池 + 形貌　；参考：《半导体光电》2014年06期

【摘要】：选用聚[9-(1-辛基壬基)-9H-咔唑-2,7-二基]-2,5-噻吩二基-2,1,3-苯并噻二唑-4,7-二基-2,5-噻吩二基](PCDTBT)作为电子给体,[6,6]-苯基-碳71-丁酸甲酯(PC71BM)作为电子受体,分别以邻二氯苯(ODCB)、氯仿(CF)以及邻二氯苯/氯仿(ODCB/CF)不同比例混合溶剂作为活性层溶剂制备有机薄膜太阳电池,研究了不同溶剂对光伏电池光电性能的影响。结果表明:合适比例的ODCB/CF(1/1)作为溶剂对制备的光伏器件紫外吸收光谱和外量子效率曲线都起到了积极的作用,此时器件能量转换效率最高,为2.28%,较单一溶剂ODCB下制备的器件效率提高了42%。通过原子力显微镜表征发现此时器件光活化层有较好的相分离。
[Abstract]:Poly ([9-H1-octylnonyl) -9H-carbazole-7-diyl] -2o-5-thiophene diyl -2o-thiadiazole-3-benzo-thiadiazole-7- (2-thiophene diyl) was selected as electron donor, [66] -phenyl-methyl carbon-71-butyrate methyl ester PC71BM) was used as electron acceptor, and [66] -phenyl-methyl carbon-71-butyrate methyl ester PC71BMwas used as electron acceptor, and [66-phenyl-methyl-71-butyrate] was used as electron acceptor. Organic thin film solar cells were prepared by using the mixed solvents of o-dichlorobenzene (ODCB), chloroform (CFC) and o-dichlorobenzene / chloroform (ODCB / CFC) as active layer solvents, respectively. The effects of different solvents on the photovoltaic properties of photovoltaic cells were studied. The results show that the appropriate ratio of ODCB / CF / 1 / 1) plays a positive role in the UV absorption spectrum and the external quantum efficiency curve of photovoltaic devices, and the energy conversion efficiency of the photovoltaic devices is the highest. Compared with the single solvent ODCB, the device efficiency increased by 42%. It is found by AFM that the photoactive layer has good phase separation.
【作者单位】：南京邮电大学光电工程学院
【基金】：国家自然科学基金项目(61274054)
【分类号】：TM914.4

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