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
Hot LO-phonon limited electron transport in ZnO/MgZnO channels
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5022463
Abstract: High-field electron transport in two-dimensional channels at ZnO/MgZnO heterointerfaces has been investigated experimentally. Pulsed current–voltage (I–V) and microwave noise measurements used voltage pulse widths down to 30 ns and electric fields up to 100 kV/cm. The samples… read more here.
Keywords: hot phonon; electron transport; phonon; zno mgzno ... See more keywords
Impact of the hot phonon effect on electronic transport in monolayer silicene
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/aad94c
Abstract: The hot phonon effect is a non-equilibrium phenomenon that has an important role in high-field electronic transport in two-dimensional electron gases and in 2D materials like graphene. In this work, the influence of this effect… read more here.
Keywords: phonon effect; hot phonon; phonon; effect ... See more keywords
Observation of hot-phonon effect in Monolayer MoS2.
Sign Up to like & getrecommendations! Published in 2020 at "Nanotechnology"
DOI: 10.1088/1361-6528/ab79ad
Abstract: Femtosecond transient absorption measurements have been performed to study the pump wavelength- and fluence-dependent hot carrier relaxation dynamics in monolayer MoS2. The relaxation process of the photoinduced carriers monitored within hundreds of femtoseconds after photoexcitation… read more here.
Keywords: phonon effect; relaxation; hot phonon; phonon ... See more keywords