Trap-Induced Losses in Hybrid Photovoltaics

被引：89

作者：

Gao, Feng ^{[1
]}

Li, Zhe ^{[1
]}

Wang, Jianpu ^{[1
]}

Rao, Akshay ^{[1
]}

Howard, Ian A. ^{[1
]}

Abrusci, Agnese ^{[1
]}

Massip, Sylvain ^{[1
]}

McNeill, Christopher R. ^{[1
]}

Greenham, Neil C. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

ACS NANO | 2014年 / 8卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

hybrid solar cells; trap; charge transport and recombination; transient absorption; transient photocurrent; CdSe nanocrystals; PHOTOINDUCED CHARGE-TRANSFER; SOLAR-CELLS; QUANTUM DOTS; II-VI; CDSE; POLYMER; RECOMBINATION; DYNAMICS; POLYMER/FULLERENE; COMPOSITES;

D O I：

10.1021/nn501185h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigate the loss mechanisms in hybrid photovoltaics based on blends of poly(3-hexylthiophene) with CdSe nanocrystals of various sizes. By combining the spectroscopic and electrical measurements on working devices as well as films, we identify that high trap-mediated recombination is responsible for the loss of photogenerated charge carriers in devices with small nanocrystals. In addition, we demonstrate that the reduced open-circuit voltage for devices with small nanocrystals is also caused by the traps.

引用

页码：3213 / 3221

页数：9

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