Optimizing Black Phosphorus/Halide Perovskite Compositions by Scanning Photoelectrochemical Microscopy
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 096510 |
Journal / Publication | Journal of the Electrochemical Society |
Volume | 169 |
Issue number | 9 |
Online published | 7 Sep 2022 |
Publication status | Published - Sep 2022 |
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Abstract
The incorporation of black phosphorus (BP) into methylammonium lead iodide (MAPbI3) perovskites has been investigated and optimized by a high throughput screening method using scanning photoelectrochemical microscopy (SPECM) to determine how the addition of BP affects its photoelectrochemical and photovoltaic properties. An optimum ratio of 2.0 mole% BP/MAPbI3 perovskite composite generates an increased photocurrent response compared to pristine MAPbI3 for 2 mM benzoquinone (BQ) reduction at −0.6 V vs Ag/AgNO3 on a spot array electrode under illumination. Due to the relatively high quantum yield of MAPbI3, time-resolved photoluminescence measurements have been conducted to investigate photophysical behaviors of BP/MAPbI3 composites. The optimal 2.0 mole% BP/MAPbI3 exhibits an increased electron-hole diffusion lifetime compared to the pristine MAPbI3 perovskite. Finally, we demonstrate the enhanced efficiency and stability of 2.0% BP/MAPbI3-based perovskite solar cells arising from impeded Pb0-defect generation and suppressed charge-carrier recombination.
Citation Format(s)
Optimizing Black Phosphorus/Halide Perovskite Compositions by Scanning Photoelectrochemical Microscopy. / Liu, Rugeng; Wang, Jiahong; Mak, Chun Hong et al.
In: Journal of the Electrochemical Society, Vol. 169, No. 9, 096510, 09.2022.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review