Hot carrier relaxation in GaN:LO phonon scattering and excitonic effects

Hot carrier relaxation has been studied in GaN using femtosecond time-resolved optical transmission and reflection. A non-thermal electron distribution with a pronounced `cut-off' at ELO is observed for up to approximately 3 ps after photoexcitation. Monte Carlo simulations show that this behav...

詳細記述

書誌詳細
主要な著者: O'Sullivan, E, Hess, S, Taylor, R, Cain, N, Roberts, V, Roberts, J, Ryan, J
フォーマット: Journal article
言語:English
出版事項: Elsevier 1999
その他の書誌記述
要約:Hot carrier relaxation has been studied in GaN using femtosecond time-resolved optical transmission and reflection. A non-thermal electron distribution with a pronounced `cut-off' at ELO is observed for up to approximately 3 ps after photoexcitation. Monte Carlo simulations show that this behaviour is due to a remarkably strong electron-LO phonon interaction. Excitonic effects are also pronounced, and strongly influence the dynamics.