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

Autor:	Ravishankar, Sandheep, Unold, Thomas, Kirchartz, Thomas
Rok vydání:	2020
Předmět:	Physics - Applied Physics Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	Ni et al. report minimum bulk trap densities of 10^11 cm-3 and 1-4 orders change in interfacial trap densities derived from drive-level capacitance profiling of lead halide perovskites. From basic electrostatic arguments, we show that such bulk trap densities cannot be resolved for a p-i-n perovskite solar cell for the reported layer thicknesses, while the apparent interfacial charge densities are a consequence of the geometrical capacitance and of charge injection into the perovskite layer. Comment: 22 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.02892 Zobrazit plný text záznamu View this record from Arxiv