Simulating Exciton Delocalization in Organic Solar Cells by a Modified Drift-Diffusion Model

被引：0

作者：

Wang, Zi Shuai ^{[1
]}

Choy, Wallace C. H. ^{[1
]}

Sha, Wei E. I. ^{[1
,2
]}

机构：

[1] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China

[2] Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Zhejiang, Peoples R China

来源：

2017 IEEE ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS SYMPOSIUM (EDAPS) | 2017年

基金：

中国国家自然科学基金;

关键词：

organic solar cells; drift-diffusion model; exciton delocalization; CHARGE SEPARATION; MECHANISM; STATES;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to understand the device physics and optimize the power conversion efficiency of organic solar cells (OSCs), the theoretical modeling involving the advanced excitonic physics is highly important. In this work, a modified drift-diffusion model is established to describe the exciton delocalization mechanism in the charge-generation process of the OSCs. The carrier transport, recombination and collection are also incorporated to fully capture the electrical response. The increase of the exciton delocalization ratio is demonstrated to be important for reducing the energy loss in the exciton dissociation process; and consequently, improving the device efficiency especially for the short-circuit current.

引用

页数：3

共 16 条

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