Format:
Online-Ressource
ISSN:
1521-3951
Content:
Abstract: We investigated the hot carrier dynamics in InGaN mutli‐quantum wells using phtoluminescence, time‐resolved photoruminescence (TRPL) and white‐light pump and probe methods at room temperature. The pump and probe spectra or ΔOD spectra have not reflected the screening of electric field by photoexcited carriers but the distribution of hot carriers. It reflects the band filling of the tail state in lower energy side and Maxwell–Boltzmann‐like tail of hot carriers on the higher energy side. ΔOD spectra in 1.5 ps rose in the observed spectral region, which indicates that thermalization among carriers is very fast. It is because of carrier‐LO phonon and carrier‐carrier interaction. After 2 ps ΔOD spectra are red shifted as increasing the time delay. At 40 ps time delay, the Maxwell–Boltzmann‐like tail shows still the high temperature of carriers. This slow cooling is likely due to the hot phonon effects where the nonequilibrium phonon population may lead to a reabsorption of phonons by photoexcited carriers. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
In:
volume:240
In:
number:2
In:
year:2003
In:
pages:392-395
In:
extent:4
In:
Physica status solidi / B. B, Basic solid state physics, Weinheim : Wiley-VCH, [1971]-, 240, Heft 2 (2003), 392-395 (gesamt 4), 1521-3951
Language:
English
DOI:
10.1002/pssb.200303256
URN:
urn:nbn:de:101:1-2023092506083451278952
URL:
https://doi.org/10.1002/pssb.200303256
URL:
https://nbn-resolving.org/urn:nbn:de:101:1-2023092506083451278952
URL:
https://d-nb.info/1303799987/34
URL:
https://doi.org/10.1002/pssb.200303256
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