Melting and Crystallization Features of CsPbBr3 Perovskite

Kanak A, Kopach O, Kanak L, Levchuk I, Isaiev M, Brabec C, Fochuk P, Khalavka Y (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Crystal Growth and Design American Chemical Society

DOI: 10.1021/acs.cgd.1c01530

Abstract

The all-inorganic perovskite cesium lead bromide (CsPbBr3) has attracted considerable attention as a promising material for optoelectronics and high-energy radiation detectors. In order to obtain a bulk single crystal from a melt, it is crucial to understand the peculiarities of melting and crystallization processes. Here, the solid-liquid and liquid-solid phase transitions were studied by differential thermal analysis at different heating/cooling rates (0.1, 1, 3, 5, and 10 degrees C/min). A two-stage melting mechanism of CsPbBr3 perovskite was proposed. The critical maximal sample temperature (Tcritical) was determined for each heating rate. If the sample was heated to a temperature below Tcritical, the crystallization occurred at a temperature higher than the melting point. Contrarily, if the sample was heated to a temperature higher than this critical value, the melt crystallization occurred with supercooling. We believe that such crystallization features are closely related to the melt structure, which changes during the sample heating. The activation energies of melting and crystallization processes of CsPbBr3 were determined to be 1846 and 1940 kJ/mol, respectively. For the first time, this study demonstrates the impact of heating and cooling conditions on the melting and crystallization processes of the bulk CsPbBr3. It is significant for gaining a fundamental understanding of the crystal growth and fabrication of high-quality monocrystalline materials.

Authors with CRIS profile

Ievgen Levchuk Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Additional Organisation(s)

Graduiertenkolleg 2495 Energiekonvertierungssysteme: von Materialien zu Bauteilen (Energy Conversion Systems: From Materials to Devices)

Involved external institutions

Yuriy Fedkovych Chernivtsi National University UA Ukraine (UA) Université de Lorraine FR France (FR)

How to cite

APA:

Kanak, A., Kopach, O., Kanak, L., Levchuk, I., Isaiev, M., Brabec, C.,... Khalavka, Y. (2022). Melting and Crystallization Features of CsPbBr3 Perovskite. Crystal Growth and Design. https://doi.org/10.1021/acs.cgd.1c01530

MLA:

Kanak, Andrii, et al. "Melting and Crystallization Features of CsPbBr3 Perovskite." Crystal Growth and Design (2022).

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