光电流
光电导性
材料科学
大气温度范围
微晶
暗电流
航程(航空)
光电子学
活化能
分析化学(期刊)
凝聚态物理
光电探测器
化学
物理
结晶学
热力学
复合材料
物理化学
色谱法
作者
M. Bruzzi,Fabio Gabelloni,Nicola Calisi,Stefano Caporali,A. Vinattieri
出处
期刊:Nanomaterials
[MDPI AG]
日期:2019-02-01
卷期号:9 (2): 177-177
被引量:20
摘要
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.
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