Visible photoluminescence from Ge quantum dots

Kien-Wen Sun; S. H. Sue; C. W. Liu

doi:10.1016/j.physe.2005.05.063

Visible photoluminescence from Ge quantum dots

Kien-Wen Sun^*, S. H. Sue, C. W. Liu

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Spectroscopic analyses on stacked Ge quantum dots (QDs) on Si (1 0 0) substrates are presented. Strong and visible photoluminescence around 620 nm from stacked Ge QDs is observed. The luminescence is intense and clearly visible to the naked eye at both room temperature and low temperature. We have investigated the temperature dependence of the luminescence, as well as the composition of Ge dots via transmission electron microscopy and the Raman spectroscopy. Possible causes of the visible luminescence are also speculated in this report.

Original language	English
Pages (from-to)	525-530
Number of pages	6
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	28
Issue number	4
DOIs	https://doi.org/10.1016/j.physe.2005.05.063
State	Published - Sep 2005

Keywords

Ge quantum dot
Photoluminescence
Raman spectroscopy

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10.1016/j.physe.2005.05.063

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title = "Visible photoluminescence from Ge quantum dots",

abstract = "Spectroscopic analyses on stacked Ge quantum dots (QDs) on Si (1 0 0) substrates are presented. Strong and visible photoluminescence around 620 nm from stacked Ge QDs is observed. The luminescence is intense and clearly visible to the naked eye at both room temperature and low temperature. We have investigated the temperature dependence of the luminescence, as well as the composition of Ge dots via transmission electron microscopy and the Raman spectroscopy. Possible causes of the visible luminescence are also speculated in this report.",

keywords = "Ge quantum dot, Photoluminescence, Raman spectroscopy",

author = "Kien-Wen Sun and Sue, {S. H.} and Liu, {C. W.}",

year = "2005",

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pages = "525--530",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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T1 - Visible photoluminescence from Ge quantum dots

AU - Sun, Kien-Wen

AU - Sue, S. H.

AU - Liu, C. W.

PY - 2005/9

Y1 - 2005/9

N2 - Spectroscopic analyses on stacked Ge quantum dots (QDs) on Si (1 0 0) substrates are presented. Strong and visible photoluminescence around 620 nm from stacked Ge QDs is observed. The luminescence is intense and clearly visible to the naked eye at both room temperature and low temperature. We have investigated the temperature dependence of the luminescence, as well as the composition of Ge dots via transmission electron microscopy and the Raman spectroscopy. Possible causes of the visible luminescence are also speculated in this report.

AB - Spectroscopic analyses on stacked Ge quantum dots (QDs) on Si (1 0 0) substrates are presented. Strong and visible photoluminescence around 620 nm from stacked Ge QDs is observed. The luminescence is intense and clearly visible to the naked eye at both room temperature and low temperature. We have investigated the temperature dependence of the luminescence, as well as the composition of Ge dots via transmission electron microscopy and the Raman spectroscopy. Possible causes of the visible luminescence are also speculated in this report.

KW - Ge quantum dot

KW - Photoluminescence

KW - Raman spectroscopy

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U2 - 10.1016/j.physe.2005.05.063

DO - 10.1016/j.physe.2005.05.063

M3 - Article

AN - SCOPUS:24144470058

SN - 1386-9477

VL - 28

SP - 525

EP - 530

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 4

ER -

Visible photoluminescence from Ge quantum dots

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Keywords

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