Improvement of the efficiency of CuPc/C60-based photovoltaic cells using a multistepped structure

被引：32

作者：

Chen, Lin ^{[1
]}

Tang, Yanwei ^{[1
]}

Fan, Xing ^{[1
]}

Zhang, Chao ^{[1
]}

Chu, Zengze ^{[1
]}

Wang, Dan ^{[1
]}

Zou, Dechun ^{[1
]}

机构：

[1] Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 04期

基金：

美国国家科学基金会;

关键词：

Organic photovoltaic cells; Multistepped structure; Concentration gradient; Deposition rates; Chemical potential energy gradient; Charge-separation interface; DONOR-ACCEPTOR HETEROJUNCTIONS; ORGANIC SOLAR-CELLS; PHTHALOCYANINE; PERFORMANCE; INTERFACES; SEPARATION; BEHAVIOR; FILMS;

D O I：

10.1016/j.orgel.2009.02.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Organic photovoltaic cells with multistepped (MS) structures based on a CuPc/C-60 materials system were fabricated. A detailed analysis of the effect of stepped distributions on the device's performance suggests that the highest efficiency is reached when the concentration gradient of donor and acceptor is largest. In this kind of device, owing to a great chemical potential energy gradient in addition to a large charge-separation (CS) interface, both the open-circuit voltage and short-circuit current density are improved remarkably, leading to a power conversion efficiency nearly one level higher than that of the bilayer device and 50% greater than the 1:1 homogeneously mixed device. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：724 / 728

页数：5

共 27 条

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[Anonymous], SCIENCE

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