Comment on "Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells"

Comment on "Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells"

Ni (Research Articles, 20 March 2020, p. 1352) report bulk trap densities of 10 cm 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 d...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2021-02, Vol.371 (6532)
Hauptverfasser: Ravishankar, Sandheep, Unold, Thomas, Kirchartz, Thomas
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container_title Science (American Association for the Advancement of Science)
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creator Ravishankar, Sandheep
Unold, Thomas
Kirchartz, Thomas
description Ni (Research Articles, 20 March 2020, p. 1352) report bulk trap densities of 10 cm 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.
doi_str_mv 10.1126/science.abd8014
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title Comment on "Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells"
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