Highly stable CsFAPbIBr perovskite solar cells with dominant bulk recombination at real operating temperatures. Issue 9 (17th April 2023)

• Record Type: Journal Article
• Authors: Romero, Beatriz; Delgado, Silvia; Glowienka, Damian; Chang, Cheng-Tsung; Pozo, Gonzalo del; Arredondo, Belén; Martín-Martín, Diego; Contreras, Pedro; Galagan, Yulia
• Is Part Of: Sustainable energy & fuels. Volume 7:Issue 9(2023)
• Page Start: 2146
• Page End: 2152
• Publication Date: 2023-04-17
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d2se01766k
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : Ideality factor vs. temperature obtained from the dependence of open circuit voltage on the irradiation level (inset). Abstract : Mixed-cation mixed-halide perovskite solar cells have been characterized in DC at different temperatures (from −20 °C up to 50 °C) and the time evolution of the device efficiency has been assessed using different degradation protocols (indoors and outdoors). The completely planar p–i–n structure is ITO/CuNiO x /PTAA/CsFAPbIBr/PCBM/PEI/Ag. Pristine current–voltage characteristics barely show hysteresis, at any temperature. Open circuit voltage decreases with temperature at a rate of −1.5 mV °C −1, and the obtained PCE temperature coefficient is lower than −0.001% K −1, which is an outstanding value for this emerging photovoltaic technology. Cells have been degraded under different protocols: indoors using different light/dark cycles and outdoors in a high temperature and high irradiation location. Cells show no significant decrease of the efficiency after more than 350 h of indoor light cycling and the estimated T 80 obtained for the sample degraded outdoors under high irradiation and high temperature conditions is ∼15 days.