The Effects of Annealing on the Morphology and Luminescence Stability of an Inorganic Perovskite CsPbBr₃ Synthesized Using the Ligand Assisted Reprecipitation (LARP) Method

Abstract:

The inorganic perovskite CsPbBr₃ is a promising candidate for photovoltaic and light-emitting devices, but stability concerns hinder its commercial application. The purpose of this study is to investigate the effect of annealing temperature on the morphology and luminescence stability of inorganic CsPbBr₃ perovskite at 90°C, 100°C, 110°C, and 120°C. The CsPbBr₃ was prepared by Ligand Assisted Reprecipitation (LARP). The TEM images revealed the formation of nanoplatelets of inorganic CsPbBr₃ perovskite with an average particle size of 35 nm. The morphological stability of as-synthesized CsPbBr₃ after annealing at a defined temperature was demonstrated using X-Ray Diffraction characterization and SEM imaging. The crystal structure remains stable with a cubic structure even when heated to 120°C. UV-Vis absorbance and photoluminescence intensity spectra confirmed the luminescence stability of the as-prepared CsPbBr₃ after annealing process.

• Periodical: Materials Science Forum (Volume 1051)
• Pages: 17-23
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1051.17
• Online since: January 2022
• Authors: Fajri Malik Ammrulloh, Muhammad Afdhel Refialdi, Farhan Aryo Hutomo, Nur Hanifah, Diah Susanti, Azzah Dyah Pramata*
• Keywords: Annealing, CsPbBr₃, LARP, Luminenscence, Stability, Structure

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