Temperature Dependent Charge Carrier Dynamics in Formamidinium Lead Iodide Perovskite

The Journal of Physical Chemistry. C, Nanomaterials and Interfaces
María C Gélvez-RuedaFerdinand C Grozema

Abstract

The fundamental opto-electronic properties of organic-inorganic hybrid perovskites are strongly affected by their structural parameters. These parameters are particularly critical in formamidinium lead iodide (FAPbI3), in which its large structural disorder leads to a non-perovskite yellow phase that hinders its photovoltaic performance. A clear understanding of how the structural parameters affect the opto-electronic properties is currently lacking. We have studied the opto-electronic properties of FAPbI3 using microwave conductivity measurements. We find that the mobility of FAPbI3 increases at low temperature following a phonon scattering behavior. Unlike methylammonium lead iodide (MAPbI3), there are no abrupt changes after the low-temperature β/γ phase transition and the lifetime is remarkably long. This absence of abrupt changes can be understood in terms of the reduced rotational freedom and smaller dipole moment of the formamidinium, as compared to methylammonium.

References

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Citations

Aug 14, 2018·Chemical Society Reviews·Kun ChenHarun Tüysüz
May 23, 2019·Physical Chemistry Chemical Physics : PCCP·Yufeng YangZhiming Xiao
Oct 9, 2019·Advanced Materials·Lu ChengJianpu Wang
Aug 13, 2020·Nature Communications·Mohammad Sajedi AlvarGert-Jan A H Wetzelaer
Feb 2, 2021·Small·Nabonswende Aida Nadege OuedraogoYongzhe Zhang
Apr 23, 2021·Physical Chemistry Chemical Physics : PCCP·Josefa Ibaceta-JañaMarkus R Wagner
May 4, 2021·Advanced Materials·Adnan YounisTom Wu
Jul 24, 2018·The Journal of Physical Chemistry Letters·Christopher L DaviesLaura M Herz
Sep 18, 2020·The Journal of Physical Chemistry Letters·Lin ZhuNana Wang

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