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Influence of spin-coating rotation speed and spin-coating time on CsPbIBr2 perovskite thin films

FEI ZHAO1,* , YIXIN GUO2,* , PEIZHI YANG3

Affiliation

  1. School of Photoelectric Engineering, Changzhou Institute of Technology, Changzhou 213032, China
  2. Department of Physics, Shanghai Normal University, Shanghai 200233, China
  3. College of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, China

Abstract

All-inorganic CsPbIBr2 perovskite thin films were fabricated via a solution process. The morphological and structural properties of CsPbIBr2 perovskite thin films prepared under different spin-coating parameters are systematically investigated using SEM, XRD, XPS and EDS. The CsPbIBr2 thin film with 2000 rpm and 120 s exhibits the good crystallinity and large average grain size. Consequently, the optimal rotation speed and time under the experimental conditions are determined to be 2000 rpm and 120 s, respectively. This work provides a novel approach for preparing high-quality CsPbIBr2 perovskite thin films..

Keywords

CsPbIBr2 perovskite thin film, Crystallinity, Average grain size.

Submitted at: Sept. 17, 2025
Accepted at: June 2, 2026

Citation

FEI ZHAO, YIXIN GUO, PEIZHI YANG, Influence of spin-coating rotation speed and spin-coating time on CsPbIBr2 perovskite thin films, Journal of Optoelectronics and Advanced Materials Vol. 28, Iss. 5-6, pp. 261-266 (2026)