Comment on “Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells”
- 26 February 2021
- journal article
- editorial
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 371 (6532)
- https://doi.org/10.1126/science.abd8014
Abstract
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.Funding Information
- Helmholtz Association (PEROSEED)
- Deutsche Forschungsgemeinschaft (SPP-2169 -661329)
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