Mobility–Lifetime Products in MAPbI3 Films
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- 作者：Igal Levine ; Satyajit Gupta ; Thomas M. Brenner ; Doron Azulay ; Oded Millo ; Gary Hodes ; David CahenIsaac Balberg
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2016
- 出版时间：December 15, 2016
- 年：2016
- 卷：7
- 期：24
- 页码：5219-5226
- 全文大小：449K
- ISSN：1948-7185
文摘
Photovoltaic solar cells operate under steady-state conditions that are established during the charge carrier excitation and recombination. However, to date no model of the steady-state recombination scenario in halide perovskites has been proposed. In this Letter we present such a model that is based on a single type of recombination center, which is deduced from our measurements of the illumination intensity dependence of the photoconductivity and the ambipolar diffusion length in those materials. The relation between the present results and those from time-resolved measurements, such as photoluminescence that are commonly reported in the literature, is discussed.