2018年6月1日
Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
Journal of Materials Science: Materials in Electronics
- ,
- 巻
- 29
- 号
- 11
- 開始ページ
- 9058
- 終了ページ
- 9066
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s10854-018-8932-4
- 出版者・発行元
- Springer New York LLC
Selections of hole transporting materials (HTMs) in perovskite solar cells (PCSs) with conventional structure are crucial for the macroscopic device performance and stability. In this work, four different types of π-conjugated polymers were used as HTMs and the effects of their properties on photovoltaic performance and stability were investigated. It was found that light absorption overlap of HTM with perovskite layer reduces charge generation, implying that HTM also absorbs photon but does not participate in charge generation activity. However, with determination of band alignment, the PSCs with high open circuit voltage (Voc) was achieved with PTB7-TH which has the most appropriate highest occupied molecular orbital level for the valence band edge of the perovskite layer. Finally, in comparison with the as-prepared device, the non-encapsulated PSC with PTB7-TH also showed stable Voc and improved power conversation efficiency upon storing in ambient atmosphere with relative humidity of 55–70% for 112 h.
- リンク情報
- ID情報
-
- DOI : 10.1007/s10854-018-8932-4
- ISSN : 1573-482X
- ISSN : 0957-4522
- eISSN : 1573-482X
- SCOPUS ID : 85044017444