Photoluminescence of hydrogenated SimGensuperlattices
作者:
V. Arbet‐Engels,
M. A. Kallel,
K. L. Wang,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 59,
issue 14
页码: 1705-1707
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.106224
出版商: AIP
数据来源: AIP
摘要:
The effect of hydrogen passivation on the photoluminescence of Si‐rich superlattices is investigated. The as‐grown samples show many defect‐related luminescence signals and several additional luminescence peaks believed to originate from the superlattice. The background luminescence along with the dislocation and defect lines are found to be passivated by the hydrogen atoms. The intensity of the superlattice peak increases after passivation and its phonon replica, initially submerged in the background and defect luminescence signals, is highlighted. After a subsequent temperature annealing in N2, the background luminescence is increased as hydrogen outdiffuses but the superlattice main peak decreases, perhaps due to the change of the carrier lifetime.
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