2019年5月
Planar Perovskite Solar Cells with High Efficiency and Fill Factor Obtained Using Two-Step Growth Process
ACS APPLIED MATERIALS & INTERFACES
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- 巻
- 11
- 号
- 17
- 開始ページ
- 15680
- 終了ページ
- 15687
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acsami.9b02948
- 出版者・発行元
- AMER CHEMICAL SOC
Hybrid organic inorganic perovskite solar cells (PSCs) have been regarded as the most promising next-generation photovoltaics (PVs) because of their potential for low-cost fabrication and advances in their development. Superior quality of the photoactive perovskite layer is a main factor for further increasing the PV performance of the organic inorganic perovskite solar cells (PSCs). Herein, we successfully obtained perovskite with a high crystallinity and large grain size by utilizing excess PbI2 and SSGP technique and demonstrated a superior PV performance of normal-architecture planar PSCs. The SSGP PSCs with the highest fill factor (FF) reported thus far (83.4%) to our knowledge were obtained without sacrificing other PV parameters. Moreover, a high efficiency of 21.3% (21.6%) with a high FF of 80.0% (81.2%) in forward (reverse) scan was achieved. The unencapsulated SSGP PSCs showed robust continuous light-soaking and thermal stability under harsh characterization conditions. Additionally, we achieved a high efficiency of 20.1% with a negligible hysteresis on the large active area SSGP PSCs (similar to 1 cm(2)). The optical properties, efficient carrier extraction, and reduction of recombination loss of the SSGP perovskite significantly contribute to the high PV performance and robust stability of SSGP PSCs.
- リンク情報
- ID情報
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- DOI : 10.1021/acsami.9b02948
- ISSN : 1944-8244
- eISSN : 1944-8252
- Web of Science ID : WOS:000466988800054