Abstract
AbstractMetal halide perovskites exhibit intriguing properties for optoelectronic and electronic applications. Understanding their intrinsic photoexcitation and band‐tail dynamics is essential for exploring novel functionality and improving device performance. This report addresses the band‐tail luminescence of lead bromide perovskite (APbBr3) single crystals, where A is methylammonium, formamidinium, and cesium. Using time‐resolved photoluminescence (PL) spectroscopy, the dynamics of well‐defined dual emission peaks are unambiguously resolved from the picosecond to the microsecond scale. Whereas the long‐lived states exhibit similar recombination dynamics at high temperatures, a clear, fast transition occurs between the high and low energy states at low temperatures, indicating direct communication between these two states. These time‐resolved PL spectra shed light on the intrinsic optical properties of metal halide perovskites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
