Double injection in organic bulk-heterojunction

被引：24

作者：

Juska, Gytis ^{[1
]}

Genevicius, Kristijonas ^{[1
]}

Sliauzys, Gytis ^{[1
,2
]}

Nekrasas, Nerijus ^{[1
]}

Osterbacka, Ronald ^{[2
]}

机构：

[1] Vilnius State Univ, Dept Solid State Elect, LT-10222 Vilnius, Lithuania

[2] Abo Akad Univ, Dept Phys, Turku, Finland

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 19-25期

关键词：

solar cells; photovoltaics; polymers and organics;

D O I：

10.1016/j.jnoncrysol.2007.09.098

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have used double injection current (DoI) transient technique for investigation of mobility, recombination and deep trapping of charge carriers in bulk-heterojunction organic solar cells, where bimolecular charge carrier recombination is reduced compared to Langevin recombination. Experimental Dol transient's investigation results of RRP3HT/PCBM blends were compared with ones of a-Si:H solar cells, and with results obtained by both charge carrier extraction (CELIV) and time-of-flight (TOF) techniques. Numerical modeling of DoI transient, taking into account charge carrier trapping, demonstrated that in bulk-heterojunction organic material blends the influence of charge carrier deep trapping is insignificant. The bimolecular recombination coefficient is strongly reduced compared to Langevin recombination one and depends on the density of charge carriers. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2858 / 2861

页数：4

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