The stability of Cs-based halide perovskites is a critical factor for their practical application in optoelectronic devices, including solar cells and LEDs. T his research paper investigates the time-based stability of these perovskites over 60 days using a comprehensive suite of Spectroscopy and photographic techniques including UV (ultra-violet spectroscopy), PL (photoluminescence spectroscopy), spectroscopy using X-rays (XRD), and electron microscopy through transmission (TEM). Through systematic monitoring, we evaluated the structural and optical changes. UV and PL spectroscopy provides insights into the optical properties and emission characteristics, revealing a little bit of decline in performance over the 60 days. XRD analysis offers detailed information on the crystalline structure, highlighting any phase transition processes. TEM imaging complements these findings by elucidating morphological changes at the nanoscale. We investigated the material at room temperature over 60 days. Our findings showed that the material remained notably stable during the first 60 days, the material’s stability over 60 days makes it a promising candidate for photovoltaic applications. As a result, we are actively exploring further research to identify and develop methods to enhance the material’s stability beyond this period, to improve its overall performance and longevity in practical applications.
Mishra et al. (Sat,) studied this question.