论文标题

评论“在金属卤化物钙钛矿太阳能电池中解决陷阱状态的空间和能量分布”

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

论文作者

Ravishankar, Sandheep, Unold, Thomas, Kirchartz, Thomas

论文摘要

Ni等。报告最小散装陷阱密度为10^11 cm-3和1-4个订单的界面陷阱密度变化,该界面陷阱密度从铅卤化物钙钛矿的驱动水平电容分析得出。从基本的静电论证中,我们表明,对于报告的层厚度,无法解决P-I-N perovskite太阳能电池的这种大量陷阱密度,而明显的界面电荷密度是几何电容的结果,是电荷受损的结果,并且是电荷不受压力的。

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.

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