期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 98, 期 -, 页码 472-475出版社
ELSEVIER
DOI: 10.1016/j.solmat.2011.10.014
关键词
Organic thin-film photovoltaics; Horizontal molecular orientation; Amorphous donor; Optical anisotropy; Planar heterojunction
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Casio Science Promotion Foundation
- Japan Science and Technology Agency (JST)
For high performance of organic thin-film photovoltaics (OPVs), high absorption and efficient charge transport of active materials are critical to compensate the short exciton diffusion length and low carrier mobility in organic semiconductors. It is desirable to control over molecular orientation in active layers to enhance both optical and electrical properties. In this letter, we show that amorphous donors having a planar molecular shape can be horizontally oriented, enabling active layers in OPVs to be thin while keeping high absorption in the devices. Based on anisotropic properties in optical design, a power conversion efficiency of more than 4% was achieved from a simple planar heterojunction. This result shows that using horizontally oriented amorphous materials is an effective approach to enhance OPV efficiency. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据