Breaking Phonon Bottlenecks through Efficient Auger Processes in Perovskite Nanocrystals.
Sign Up to like & getrecommendations! Published in 2023 at "ACS nano"
DOI: 10.1021/acsnano.2c12220
Abstract: The hot phonon bottleneck has been under intense investigation in perovskites. In the case of perovskite nanocrystals, there may be hot phonon bottlenecks as well as quantum phonon bottlenecks. While they are widely assumed to… read more here.
Keywords: phonon bottlenecks; spectroscopy; perovskite nanocrystals; phonon ... See more keywords
Carrier-Specific Hot Phonon Bottleneck in CH3NH3PbI3 Revealed by Femtosecond XUV Absorption.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c07817
Abstract: Femtosecond carrier cooling in the organohalide perovskite semiconductor CH3NH3PbI3 is measured using extreme ultraviolet (XUV) and optical transient absorption spectroscopy. XUV absorption between 44 and 58 eV measures transitions from the I 4d core to… read more here.
Keywords: phonon bottleneck; hot phonon; carrier; xuv absorption ... See more keywords
Acoustic-optical phonon up-conversion and hot-phonon bottleneck in lead-halide perovskites
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/ncomms14120
Abstract: The hot-phonon bottleneck effect in lead-halide perovskites (APbX3) prolongs the cooling period of hot charge carriers, an effect that could be used in the next-generation photovoltaics devices. Using ultrafast optical characterization and first-principle calculations, four… read more here.
Keywords: phonon bottleneck; phonon; bottleneck; lead halide ... See more keywords