期刊
SCIENCE
卷 371, 期 6532, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.abd8014
关键词
-
资金
- Helmholtz Association via the project PEROSEED [DFG-SPP-2169]
The results reported by Ni et al. are not actual trap densities, but rather a consequence of geometrical capacitance and charge injection into the perovskite layer.
Ni et al. (Research Articles, 20 March 2020, p. 1352) report bulk trap densities of 1011 cm(-3) and an increase in interfacial trap densities by one to four orders of magnitude from drive-level capacitance profiling of lead halide perovskites. From electrostatic arguments, we show that the results are not trap densities but are a consequence of the geometrical capacitance and charge injection into the perovskite layer.
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