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- Title
Defective States in Micro-Crystalline CsPbBr3 and Their Role on Photoconductivity.
- Authors
Bruzzi, Mara; Gabelloni, Fabio; Calisi, Nicola; Caporali, Stefano; Vinattieri, Anna
- Abstract
Intrinsic defects in CsPbBr3 microcrystalline films have been studied using thermally stimulated current (TSC) technique in a wide temperature range (100–400 K). Below room temperature, TSC emission is composed by a set of several energy levels, in the range 0.11–0.27 eV, suggesting a quasi-continuum distribution of states with almost constant density. Above room temperature, up to 400 K, the temperature range of interest for solar cells, both dark current and photocurrent, are mainly dominated by energy levels in the range 0.40–0.45 eV. Even if measured trap densities are high, in the range 1013–1016 cm−3, the very small capture cross-sections, about 10−26 m2, agree with the high defect tolerance characterizing this material.
- Subjects
THERMALLY stimulated currents; PHOTOCONDUCTIVITY; CHARGE transfer; SOLAR cells; SILICON solar cells; DYE-sensitized solar cells; PHOTOCURRENTS
- Publication
Nanomaterials (2079-4991), 2019, Vol 9, Issue 2, p177
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano9020177