Light dependent open-circuit voltage of organic bulk heterojunction solar cells in the presence of surface recombination

被引：94

作者：

Brus, V. V. ^{[1
]}

机构：

[1] Chernivtsi Natl Univ, Dept Elect & Energy Engn, UA-58012 Chernovtsy, Ukraine

来源：

ORGANIC ELECTRONICS | 2016年 / 29卷

关键词：

Open-circuit voltage; Traps; Surface recombination; Light dependence; CD1-XZNXTE CRYSTALS; PHOTOCONDUCTIVITY; VELOCITY;

D O I：

10.1016/j.orgel.2015.11.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analytical model for the light intensity dependence of open circuit voltage V-oc in the presence of bimolecular, trap assisted and surface recombination mechanisms was proposed. The model quantitatively explains reported experimental deviations from the bimolecular and bimolecular/trap assisted recombination models. V-oc was found to be the most sensitive photoelectric parameter to surface recombination. The relative effect of surface recombination on V-oc increases with the increase of trap density as well as V-oc becomes more sensitive to the presence of deep traps due to surface recombination. In the presence of surface recombination slope V-oc vs. light intensity A does not reach value of 2.0 kT/q even at very high density of traps. Also a possible misinterpretation of the experimental V-oc vs. light intensity dependences in the presence of trap assisted and surface recombination was outlined. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

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