氯苯和邻二氯苯及其混合物作为溶剂对P3HT/PCBM异质结活性层光电转换效率的影响  

Solvent Effects of Chlorobenzene,Ortho-dichlorobenzene and Their Mixture to Performance of P3HT / PCBM-based Bulk-heterojunction Solar Cells

作　　者：刘冠辰[1] 谢小银 

机构地区：[1]吉林化工学院材料科学与工程学院,吉林132022 [2]石油化工学院,吉林132022

出　　处：《科学技术与工程》2016年第1期13-16,共4页Science Technology and Engineering

摘　　要：活性层的表面形态对有机异质结太阳能电池的光电转换至关重要。在实验过程中,为了能够获得较佳的表面形态和提高电池的转换效率,需要将活性层材料均匀的溶解在有机溶剂中。分别试验了以氯苯(CB)、邻二氯苯(O-DCB)及这两种溶剂按照1∶3的体积比例混溶物作为溶剂来进行旋涂制作薄膜太阳能电池。通过对比这三种不同溶剂所制成的电池的活性层的表面形态、吸收曲线,以及伏安曲线发现,氯苯和二氯苯互溶物组的产物性能明显优于单纯的氯苯组和邻二氯苯组。分析认为,在混溶物组两种溶剂的存在,使得P3HT和PCBM之间形成了明显的相分离从而提高了激子的分离效率致使产生更多的载流子,因而会产生明显的光电转换效率。The surface morphology is extremely crucial to the power conversion efficiency（ PCE） of a bulk heterojunction solar cell. In order to yield excellent surface morphology and high PCE,the materials of active layer is supposed to be dissolved homogenously in the organic solvent in the experimental treatment. Echlorobenzene（ CB）was individually utilize,Ortho-dichlorobenzene（ O-DCB） and their mixture（ volume ratio CB： O-DCB = 1： 3） to be the solvent for the materials of active layer to spin coating and synthesis the thin film solar cell. By comparing and analysising the surface morphology,absorption spectrum and J-V performance curve. it conclude that owing to the phase separation of P3 HT and PCBM formed by the mixed-solvent,more charge carrier generates due to the highly improved dissociation of excitons. As a result,PCE is promoted as well.

关 键 词：有机薄膜太阳能电池 表面形态 氯苯 邻二氯苯 溶剂 

分 类 号：O631.3[理学—高分子化学]