Effects of resonant LO phonon assisted excitation on the photoluminescence spectra of InGaN/GaN quantum wells
Effects of resonant LO phonon assisted excitation on the photoluminescence spectra of InGaN/GaN quantum wells
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谐振LO声子辅助激发对InGaN/GaN量子阱光致发光光谱的影响
DOI:
10.1002/pssc.200778682
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发表时间:
2008
期刊:
影响因子:
--
通讯作者:
Dawson P
中科院分区:
文献类型:
--
作者:
Dawson P
We have observed oscillations in the low temperature (T < 50 K) photoluminescence excitation spectra of an InGaN/GaN single quantum well at photon energies above the GaN bandgap. We attribute the features in the spectra to excitation of electrons at multiples of the LO phonon energy above the GaN conduction band edge. The rapid cooling of these electrons to the GaN conduction band edge and their subsequent capture leads to a shift, in the photoluminescence spectrum and hence the oscillations in photoluminescence. We interpret the shift in the spectrum as being due to a modification of the occupation of the distribution of localization centres by electrons. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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影响因子:
3.2
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DOI:
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1993
期刊:
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1989
期刊:
Physical Review B (Condensed Matter)
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1988
期刊:
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