Enhancement of photovoltaic characteristics using a PEDOT interlayer in TiO2/MEHPPV heterojunction devices

被引：55

作者：

Song, MY

Kim, KJ

Kim, DY

机构：

[1] Korea Adv Inst Sci & Technol, Opt Mat Res Ctr, Seoul 130650, South Korea

[2] Korea Univ, Dept Chem & Mol Engn, Seoul 136701, South Korea

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2005年 / 85卷 / 01期

关键词：

photovoltaic device; organic/inorganic interface; heterojunction; organic solar cell; PEDOT;

D O I：

10.1016/j.solmat.2003.12.018

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The effect of inserting a PEDOT interlayer between the MEHPPV layer and the An electrode of a nanocrystalline ITO/TiO2/MEHPPV/Au heterojunction device on the photovoltaic characteristics of the device has been studied. The MEHPPV layer has both a light-sensitizing role and a hole-transporting function. The overall conversion efficiency of the device with a PEDOT layer is better by more than 80% than that obtainable without a PEDOT layer. The modified device shows improved photocurrent density-voltage (J-V) characteristics, in that there is a strong reduction of the roll-over behavior in the forward bias region, and an increase in the fill factor. These improvements are due to the reduction of junction resistance across the MEHPPV/Au interface in the presence of the PEDOT interlayer, which results in improved hole injection. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：31 / 39

页数：9

共 23 条

[1]

Brabec CJ, 2001, ADV FUNCT MATER, V11, P15, DOI 10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO

[2]

2-A

[3] Effect of LiF/metal electrodes on the performance of plastic solar cells [J].