发光学报2022，Vol.43Issue(6)：922-933,12.DOI:10.37188/CJL.20220108
低沸点溶剂处理PEDOT:PSS薄膜提升光伏电池性能
Low Boiling-point Solvents Treatment of PEDOT:PSS Film for Optimized Photovoltaic Cell Performance
摘要
Abstract
As a popular hole transport material,poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)has been widely used in variety of optoelectronic devices. High boiling-point solvents were usually added into PEDOT:PSS solutions to enhance its conductivity,but simultaneously resulted in evident leakage current due to solvent residue. However,low boiling-point solvents,which are more easily removed,have not been effectively utilized. In this study,we found that the performance of the corresponding poly(3-hexy-thiophene)(P3HT):[6,6]-phenyl-C61-butyric acid methyl ester(PC61BM)polymer solar cells(PSCs)was improved without increasing the leak-age current after low boiling-point solvent treatment of PEDOT:PSS films by dripping isopropanol,ethanol or acetone then spin-coating. Especially,after the isopropanol treatment,the short-circuit current density of PSC increased from 8. 15 mA/cm2 to 9. 17 mA/cm2,and the power conversion efficiency reached 3. 5％,an 18. 6％ enhancement compared to the control device. The analysis revealed that the solvent-treated PEDOT:PSS films demonstrated dif-fetent surface morphology,enhanced light transmission,and improved electrical conductivity due to the phase sepa-ration between PEDOT and PSS chains. Meanwhile,the hole transport capability of PEDOT:PSS increased after treatment,especially after the isopropanol treatment. These results suggested that low boiling-point solvents could be effectively utilized by this method and improved the optoelectronic properties of the PEDOT:PSS film.关键词
聚(3,4-乙烯二氧噻吩):聚(苯乙烯磺酸盐)/低沸点溶剂/溶剂处理/聚合物太阳能电池Key words
poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)/low boiling-point solvents/solvent treatment/polymer solar cells分类
数理科学引用本文复制引用
李维光,陈俊聪,郑燕琼,陈与欢,陈维安,李喜峰..低沸点溶剂处理PEDOT:PSS薄膜提升光伏电池性能[J].发光学报,2022,43(6):922-933,12.基金项目
发光材料与器件国家重点实验室(华南理工大学)开放基金资助项目Supported by Open Fund of State Key Laboratory of Luminescent Materials and Devices(South China University of Technology),China （华南理工大学）
