Increased efficiency of small molecule photovoltaic cells by insertion of a MoO3 hole-extracting layer

被引：61

作者：

Hancox, I. ^{[1
]}

Chauhan, K. V. ^{[1
]}

Sullivan, P. ^{[1
]}

Hatton, R. A. ^{[1
]}

Moshar, A. ^{[2
]}

Mulcahy, C. P. A. ^{[2
]}

Jones, T. S. ^{[1
]}

机构：

[1] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England

[2] Asylum Res UK Ltd, Oxford Ctr Innovat, Oxford OX2 0JX, England

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2010年 / 3卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

SOLAR-CELLS; PERFORMANCE;

D O I：

10.1039/b915764f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a similar to 60% increase in open circuit voltage (V-oc) and power conversion efficiency in a chloroaluminium phthalocyanine (ClAlPc)/fullerene (C-60) planar heterojunction photovoltaic device after insertion of a MoO3 hole-extracting layer at the interface between the indium tin oxide (ITO) electrode and the ClAlPc donor layer, with an associated improvement in device stability. A similar improvement was observed in heterojunction devices based on mixed ClAlPc/C-60 layers. We propose that the improvements in device performance are due to the pinning of the ITO Fermi level to the valance band of the MoO3 interlayer, where the latter is closely aligned with the highest occupied molecular orbital of ClAlPc.

引用

页码：107 / 110

页数：4

共 19 条

[1] Near-infrared sensitive small molecule organic photovoltaic cells based on chloroaluminum phthalocyanine [J].