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Suppression of Undesired Losses in Organometal Halide Perovskite‐Based Photoanodes for Efficient Photoelectrochemical Water Splitting.

Authors :
Choi, Hojoong
Kim, Young Yun
Seo, Sehun
Jung, Yoonsung
Yoo, So‐Min
Moon, Chan Su
Jeon, Nam Joong
Lee, Sanseong
Lee, Kwanghee
Toma, Francesca M.
Seo, Jangwon
Lee, Sanghan
Source :
Advanced Energy Materials; 8/18/2023, Vol. 13 Issue 31, p1-13, 13p
Publication Year :
2023

Abstract

Organometal halide perovskites (OHPs) have become potential candidates for high‐efficiency photoelectrodes for use in photoelectrochemical (PEC) water splitting. However, undesired losses, such as the non‐radiative recombination of photogenerated carriers and sluggish reaction kinetics of PEC water splitting, are the main limitations to achieving maximum efficiency for OHP‐based photoelectrodes. Herein, high‐efficiency OHP‐based photoanodes with a rational design that suppresses the undesired losses is reported. As a rational design for OHP‐based photoanodes, the defect‐passivated electron transport layers effectively suppress the undesired recombination of photogenerated carriers from the OHP layers. In addition, Fe‐doped Ni3S2 with a high catalytic activity promotes the reaction kinetics of PEC water oxidation, thereby suppressing the undesired losses at the interface between the OHP photoanodes and electrolytes. The fabricated Fe‐doped Ni3S2/Ni foil/OHP photoanodes exhibit a remarkable applied bias photon‐to‐current efficiency of 12.79%, which is the highest of the previously reported OHP‐based photoanodes by suppressing undesired losses. The strategies for achieving high‐efficiency OHP‐based photoanodes provide insights into the rational design of photoelectrodes based on OHPs. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
16146832
Volume :
13
Issue :
31
Database :
Complementary Index
Journal :
Advanced Energy Materials
Publication Type :
Academic Journal
Accession number :
170027345
Full Text :
https://doi.org/10.1002/aenm.202300951