Skip to Main content Skip to Navigation
Journal articles

Negative Thermal Quenching in FASnI 3 Perovskite Single Crystals and Thin Films

Abstract : Formamidinium tin triiodide (FASnI3) is a strong contender for sustainable harvesting of solar energy and further optoelectronic applications. So far, only a few studies have considered its fundamental structure–property relationships, given the challenge of ensuring a high material quality. In a concerted effort, we here study high-quality FASnI3 single crystals through a combination of X-ray crystallography, density-functional-theory-based electronic structure calculations, and photoluminescence spectroscopy from room temperature down to 4 K. The luminescence exhibits irregular trends upon cooling with a generally strong intensity increase, but a range of negative thermal quenching, leading to an intensity maximum around 185 K which is absent in low-quality samples. Differences in the photoluminescence peak position and density-functional-theory-calculated band-gap energies highlight the importance of dynamic processes to the observable properties of FASnI3. The presented data offer deeper insight into the temperature-dependent characteristics of this halide perovskite and present opportunities for future exploration of its optoelectronic properties.
Document type :
Journal articles
Complete list of metadata
Contributor : Jacky Even Connect in order to contact the contributor
Submitted on : Wednesday, September 22, 2021 - 11:34:59 AM
Last modification on : Wednesday, November 3, 2021 - 8:13:38 AM


Kahmann-2020-Negative Thermal ...
Publication funded by an institution


Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License



Simon Kahmann, Olga Nazarenko, Shuyan Shao, Oleh Hordiichuk, Mikaël Kepenekian, et al.. Negative Thermal Quenching in FASnI 3 Perovskite Single Crystals and Thin Films. ACS Energy Letters, American Chemical Society 2020, 5 (8), pp.2512-2519. ⟨10.1021/acsenergylett.0c01166⟩. ⟨hal-02892821⟩



Record views


Files downloads