The effect of a MoOx hole-extracting layer on the performance of organic photovoltaic cells based on small molecule planar heterojunctions

被引：94

作者：

Hancox, I. ^{[1
]}

Sullivan, P. ^{[1
]}

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

Beaumont, N. ^{[1
]}

Rochford, L. A. ^{[1
]}

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

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

机构：

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

来源：

ORGANIC ELECTRONICS | 2010年 / 11卷 / 12期

关键词：

Organic photovoltaics; Molecular heterojunctions; Metal oxides; Phthalocyanines; Work function; Electronic structure; OXIDE; DEGRADATION; FAILURE;

D O I：

10.1016/j.orgel.2010.09.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a significant increase in the open circuit voltage (V-oc) and power conversion efficiency in both chloroaluminium phthalocyanine (ClAlPc)/fullerene (C-60) and boron subphthalocyanine chloride (SubPc)/C-60 organic photovoltaic (OPV) cells with the insertion of a thin molybdenum oxide (MoOx) hole-extracting layer. This improvement was not seen with copper phthalocyanine (CuPc)/C-60, and the addition of the MoOx layer leads to reduced device performance for pentacene/C-60 cells. Cells containing the MoOx layer demonstrated significantly improved stability compared to the cells deposited on bare indium-tin oxide (ITO). External quantum efficiency (EQE) measurements taken before and after constant AM1.5G illumination for 60 min showed reduced current losses for all cells containing the MoOx layer, especially in spectral regions where the donor layer contributes. We attribute this improvement to the increased stability at the MoOx/donor interface. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：2019 / 2025

页数：7

共 33 条

[1] Oxide Contacts in Organic Photovoltaics: Characterization and Control of Near-Surface Composition in Indium-Tin Oxide (ITO) Electrodes [J].