A. G. Son, V. A. Gushchina, A. A. Egorova, A. A. Sadovnikov, N. A. Bert, A. R. Tameev, S. A. Kozyukhin, “CsPbBr3 and Cs4PbBr6 perovskite nanoparticles: hidden potential of Cs4PbBr6 or ineffective fluorescence?”, Mendeleev Commun., 2025, Volume 35, Issue 2,Pages 193

Communications

CsPbBr₃ and Cs₄PbBr₆ perovskite nanoparticles: hidden potential of Cs₄PbBr₆ or ineffective fluorescence?

A. G. Son^a, V. A. Gushchina^a, A. A. Egorova^a, A. A. Sadovnikov^a, N. A. Bert^b, A. R. Tameev^c, S. A. Kozyukhin^a

^a N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
^b Ioffe Institute, 194021 St. Petersburg, Russian Federation
^c A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russian Federation

Abstract: All-inorganic perovskite CsPbBr₃ and Cs₄PbBr₆ nanoparticles are intensively studied for their unique optical properties, though synthesizing single-phase nanoparticles has posed challenges. Detailed synthesis method of CsPbBr₃ and Cs₄PbBr₆ single-phase nanoparticles and their chemical and phase analysis are described. Distinctive optical characteristics, such as photoluminescence, optical band gap and the Urbach tail region, are revealed and explained within the current conception of perovskite band structures.

Keywords: perovskite, Cs₄PbBr₆, CsPbBr₃, nanoparticles, luminescence, optical absorbance.

Received: 05.09.2025
Accepted: 15.11.2024

Language: English

DOI: 10.71267/mencom.7612

	*Supplementary materials:*
		Supplementary_data_1.pdf	1.3 Mb