Author
Listed:
- Qiuyang Li
(Peking University)
- Hong Liu
(Chinese Academy of Sciences
Chinese Academy of Sciences)
- Cheng-Hung Hou
(Academia Sinica)
- Haoming Yan
(Peking University)
- Shunde Li
(Peking University)
- Peng Chen
(Peking University)
- Hongyu Xu
(Peking University)
- Wen-Yi Yu
(Academia Sinica)
- Yiping Zhao
(Chinese Academy of Sciences
University of Chinese Academy of Sciences)
- Yanping Sui
(Chinese Academy of Sciences)
- Qixuan Zhong
(Peking University)
- Yongqiang Ji
(Peking University)
- Jing-Jong Shyue
(Academia Sinica)
- Shuang Jia
(Peking University)
- Bo Yang
(ShanghaiTech University)
- Pengyi Tang
(Chinese Academy of Sciences
Chinese Academy of Sciences
University of Chinese Academy of Sciences)
- Qihuang Gong
(Peking University
Peking University Yangtze Delta Institute of Optoelectronics
Shanxi University)
- Lichen Zhao
(Peking University)
- Rui Zhu
(Peking University
Peking University Yangtze Delta Institute of Optoelectronics
Shanxi University)
Abstract
Interfacial molecules have been demonstrated to improve the photovoltaic performance of perovskite solar cells (PSCs). However, the effect is influenced by the targeted substrate and, in particular, by its bond with the interfacial molecule. A weaker bonding of the interfacial molecule with the substrate usually implies a stronger bonding with the perovskite that could lead to uncontrollable insertion of the interfacial molecule into the perovskite bulk, resulting in device degradation. Here we select bis(2-aminoethyl) ether (BAE) as the interfacial molecule between the perovskite and the electron transport layer (ETL) in n–i–p PSCs and develop a strategy to harmonize the strength of the bilateral bonds of BAE. In particular, we manipulate the electronic structure of the ETL with doping to increase the strength of the BAE–ETL bond. This thereby results in a weakening of the BAE–perovskite bond. The harmonization in bilateral bonds of the interfacial molecule leads to PSCs with an efficiency surpassing 26.5% (certified as 26.31%) and improved stability.
Suggested Citation
Qiuyang Li & Hong Liu & Cheng-Hung Hou & Haoming Yan & Shunde Li & Peng Chen & Hongyu Xu & Wen-Yi Yu & Yiping Zhao & Yanping Sui & Qixuan Zhong & Yongqiang Ji & Jing-Jong Shyue & Shuang Jia & Bo Yang , 2024.
"Harmonizing the bilateral bond strength of the interfacial molecule in perovskite solar cells,"
Nature Energy, Nature, vol. 9(12), pages 1506-1516, December.
Handle:
RePEc:nat:natene:v:9:y:2024:i:12:d:10.1038_s41560-024-01642-3
DOI: 10.1038/s41560-024-01642-3
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