Improvement of photovoltaic performances of organic thin-film solar cells by fast electron mobility oxadiazole as an exciton blocking layer material
✍ Scribed by Ichikawa, Musubu ;Shimizu, Chieko ;Koyama, Toshiki ;Taniguchi, Yoshio
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 285 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Abstract
We demonstrated improvements of photovoltaic performances of organic thin‐film solar cells using an oxadiazole compound (Bpy‐OXD) as an exciton blocking layer (EBL) material. Due to fast electron mobility of Bpy‐OXD of above 10^–3^ cm^2^/Vs, the photovoltaic cell with Bpy‐OXD showed higher performance than that with bathocuproine, a conventional EBL material. High amorphous nature of Bpy‐OXD with high glass transition temperature of 106 °C probably also caused a part of the improvements because of protecting photovoltaic layers from damaging during upper metal electrode deposition. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)