高等学校化学学报2016，Vol.37Issue(9)：1669-1677,9.DOI:10.7503/cjcu20160302
敏化染料分子长径比对太阳能电池性能的影响
Effect of Aspect Ratio of the Dye Molecule on the Properties of Dye Sensitized Solar Cells
摘要
Abstract
Three dyes, 2-cyano-3-[ 2-( 4-{2-[ 4-N, N-bis ( 4-methylphenyl ) aminophenyl ] vinyl}-phenylami-no)-pyrimidin-5-yl]-acrylic acid( MTPA-Pyc) , 2-cyano-3-(4-{2-[4-N,N-bis(4-methylphenyl) aminophenyl] vinyl}-phenyl)-acrylic acid(MTPAcc), and 2-cyano-3-[4-N,N-bis(4-methylphenyl)aminophenyl]-acrylic acid( MTPAc) , that have different aspect ratios were studied for their performances as sensitizer in a dye sen-sitized solar cell ( DSSC ) . The effects of solvent, the amount of dye molecules adsorbed on the surface of TiO2 , and dye aggregation were investigated. The results show that MTPAcc has the most suitable aspect ratio among the three dyes with the highest and best photovoltaic properties. Polariry of absorption solvents can influence not only the absorbed amount of dyes at TiO2 but also the dye aggregation. MTPA-Pyc with a large aspect ratio exists in H-aggregation in tolene and tetrahydrofuran, whereas J-aggregation in acetonitrile. MTPAcc was found with high absorption amount at TiO2 but without aggregation, resulting in the best photovol-taic properties of corresponding DSSC with the incident photon-to-current efficiency( IPCE) of 84% at 490 nm and the photoelectric conversion efficiency(Ƞ) of 5. 72%. Therefore, the aspect ratio of dye sensitizers is sig-nificant for the photovoltaic properties of DSSC.关键词
染料敏化太阳能电池/长径比/吸附量/聚集态Key words
Dye sensitized solar cell/Aspect ratio/Absorbed amount/Aggregation分类
化学化工引用本文复制引用
任思遥,周雪琴,刘东志,蒋克键,李巍,王丽昌,汪天洋..敏化染料分子长径比对太阳能电池性能的影响[J].高等学校化学学报,2016,37(9):1669-1677,9.基金项目
国家自然科学基金(批准号:21576195,21506151)和天津市科技创新平台计划项目(批准号:14TXGCCX0001)资助. Supported by the National Natural Science Foundation of China(Nos.21576195,21506151) and the Tianjin Science and Technology Inno-vation Platform Program, China(No.14TXGCCX0001) （批准号:21576195,21506151）
