This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1016/j.nanoen.2020.105063 in citations.
Please use the identifier: http://hdl.handle.net/2128/27926 in citations.
A pressure process for efficient and stable perovskite solar cells
A pressure process for efficient and stable perovskite solar cells
The grain boundaries of organic-inorganic halide perovskite films not only function as defect centers, but also behave as intrinsic ion migrating channels and extrinsic moisture-induced degradation initiators, which are detrimental to the efficiency and stability of perovskite solar cells (PSCs). He...
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Personal Name(s): | Luo, Junsheng |
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Xia, Jianxing / Yang, Hua / Sun, Chunlin / Li, Ning / Malik, Haseeb Ashraf / Shu, Hongyu / Wan, Zhongquan / Zhang, Haoli / Brabec, Christoph / Jia, Chunyang (Corresponding author) | |
Contributing Institute: |
Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien; IEK-11 |
Published in: | Nano energy, 77 (2020) S. 105063 - |
Imprint: |
Amsterdam [u.a.]
Elsevier
2020
|
DOI: |
10.1016/j.nanoen.2020.105063 |
Document Type: |
Journal Article |
Research Program: |
Solar cells of the next generation |
Link: |
Published on 2020-07-09. Available in OpenAccess from 2022-07-09. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27926 in citations.
The grain boundaries of organic-inorganic halide perovskite films not only function as defect centers, but also behave as intrinsic ion migrating channels and extrinsic moisture-induced degradation initiators, which are detrimental to the efficiency and stability of perovskite solar cells (PSCs). Here, an effective methodology for fabrication of high-quality perovskite layers with reduced non-radiative recombination, suppressed ion migration and increased moisture stability is reported for the first time, referred as the pressure-assisted solution processing (PASP). Through PASP strategy, the nucleation and growth of perovskite crystals can be controlled, leading to the micron-sized grains and microsecond-range carrier lifetimes. The resultant PSC shows champion power conversion efficiency (PCE) as high as 20.74% and a stabilized efficiency exceeding 20%, with superior long-term stability, maintaining above 90% of initial PCE even aging 60 days and continuous 1-sun illumination for 200 h in ambient environment without encapsulation. We unambiguously believe that the control of perovskite crystal nucleation and growth with high quality will be an important direction to improve the efficiency of PSCs to the theoretical limit, as well as to stabilize perovskite-based materials and devices. |