A combined experimental and theoretical investigation of donor and acceptor interface in efficient aqueous-processed polymer/nanocrystal hybrid solar cells

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2018,（4）
• 页码范围: 437-443
• 页数: 7页
• 语种: 英文

摘要

As a route to improving the energy conversion of organic-inorganic hybrid-solar ceils,we have tested the performance of poly (phenylene vinylene) (PPV),poly(2,5-thienylene vinylene) (PWTV) polymers and CdTe nanocrystal devices produced via aqueous-processing.It is found that small differences in the conformation of the sensitizer lead to dramatic effects on the solar cell efficiency.Using a combination of UV-Vis absorption spectroscopy and fast-principles non-adiabatic molecular dynamics (NAMD) based on time-dependent density-functional theory (TDDFT),PPV is found to have a longer electron injection and recombination time despite seeming to have a better energy alignment with the substrate,which leads to a higher devices performance than PWTV.The present results shed new light on the understanding of organic-inorganic hybrid-solar cells and will trigger further experimental and theoretical investigations.