https://scholars.lib.ntu.edu.tw/handle/123456789/600445
標題: | Robust Unencapsulated Perovskite Solar Cells Protected by a Fluorinated Fullerene Electron Transporting Layer | 作者: | Huang, H.-H. et al. Tsai, H. Raja, R. Lin, S.-L. Ghosh, D. Hou, C.-H. Shyue, J.-J. Tretiak, S. Chen, W. Lin, K.-F. Nie, W. LEE-YIH WANG |
關鍵字: | Conversion efficiency;Durability;Fullerenes;Perovskite;Accelerated tests;Electron transporting layer;Fluorinated fullerenes;High power conversion;Hydrophobic nature;Long term durability;Photovoltaic technology;Photovoltaics;Perovskite solar cells | 公開日期: | 2021 | 卷: | 6 | 期: | 9 | 起(迄)頁: | 3376-3385 | 來源出版物: | ACS Energy Letters | 摘要: | The emergent perovskite photovoltaics technology faces challenges like the long-term durability combining moisture, thermal, and photo stresses that prevents them from competing with established technologies. Here, we introduce a series of new fluorinated fullerenes as an electron-transporting layer (ETL) for robust perovskite photovoltaics that deliver a high power conversion efficiency of 21.27% with substantially improved durability against environmental stressing. The hydrophobic nature of the new fullerene protects the unencapsulated perovskite cell with stability over 1400 h in 85% relative humidity. Notably, the unencapsulated device maintained 80% of their original performance (T80) after being immersed in water for over 10 min. Detailed characterizations suggest that the fluorinated fullerene can immobilize the cations in perovskites and passivate the surface traps. Therefore, the T80 lifetime of the devices under constant illumination reached 1920 h. On the basis of the accelerated test, we estimate a lifetime approaching 10 years with encapsulation. The successful demonstration of the new ETL can stimulate further research and momentum for future photovoltaic technology development. ? 2021 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114695785&doi=10.1021%2facsenergylett.1c01526&partnerID=40&md5=a8a9414052af72b3069a41761b96fcc1 https://scholars.lib.ntu.edu.tw/handle/123456789/600445 |
ISSN: | 23808195 | DOI: | 10.1021/acsenergylett.1c01526 |
顯示於: | 凝態科學研究中心 |
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