Photovoltaic performance and stability of fullerene/cerium oxide double electron transport layer superior to single one in p-i-n perovskite solar cells
| Autor: | Bao-Shan Wu, Mei-Lin Zhang, Lin-Long Deng, Su-Yuan Xie, Tan Wang, Rong-Bin Huang, Lan-Sun Zheng, Hao-Ran Liu, Zhou Xing, Luyao Wang, Xin Wang, Shu-Hui Li, Da-Qin Yun |
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| Rok vydání: | 2018 |
| Předmět: |
Cerium oxide
Fullerene Materials science Renewable Energy Sustainability and the Environment Energy conversion efficiency Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electron transport chain Cathode 0104 chemical sciences law.invention Metal Chemical engineering law visual_art visual_art.visual_art_medium Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Layer (electronics) Perovskite (structure) |
| Zdroj: | Journal of Power Sources. 389:13-19 |
| ISSN: | 0378-7753 |
| Popis: | Interface engineering that involves in the metal cathodes and the electron transport layers (ETLs) facilitates the simultaneous improvement of device performances and stability in perovskite solar cells (PSCs). Herein, low-temperature solution-processed cerium oxide (CeOx) films are prepared by a facile sol-gel method and employed as the interface layers between [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) and an Ag back contact to form PC61BM/CeOx double ETLs. The introduction of CeOx enables electron extraction to the Ag electrode and protects the underlying perovskite layer and thus improves the device performance and stability of the p-i-n PSCs. The p-i-n PSCs with double PC61BM/CeOx ETLs demonstrate a maximum power conversion efficiency (PCE) of 17.35%, which is superior to those of the devices with either PC61BM or CeOx single ETLs. Moreover, PC61BM/CeOx devices exhibit excellent stability in light soaking, which is mainly due to the chemically stable CeOx interlayer. The results indicate that CeOx is a promising interface modification layer for stable high-efficiency PSCs. |
| Databáze: | OpenAIRE |
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