The energy relaxation time of hot carriers photoexcited in bulk InGaN is measured. The time-resolved pump and probe transmission measurements with subpicosecond time resolution show that the hot-carrier relaxation time is 0.92 ps at 15 K. The hot-carrier relaxation time becomes significantly shorter at higher temperatures. At temperatures higher than 150 K, there are no meaningful differences between rise times. This strong temperature dependence indicates that electron-phonon scattering dominates the carrier relaxation process.
|Number of pages||3|
|Journal||Physica Status Solidi (C) Current Topics in Solid State Physics|
|Publication status||Published - 2008 Jun 30|
|Event||15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 - Tokyo, Japan|
Duration: 2007 Jul 23 → 2007 Jul 27
ASJC Scopus subject areas
- Condensed Matter Physics