Fabrication and temperature-dependent photoluminescence spectra of Zn-Cu-In-S quaternary nanocrystals

A series of Zn-Cu-In-S nanocrystals （ZCIS NCs） are prepared and the optical properties of the ZCIS NCs are tuned by adjusting the reaction time. It is interesting to observe that the temperature-dependent photoluminescence （PL） spectra of the ZCIS NCs show a redshift with decreasing intensity at low...

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Published inChinese physics B Vol. 23; no. 11; pp. 566 - 571
Main Author 刘晓娟 张晓松 李岚 王雪亮 苑琳琳
Format Journal Article
LanguageEnglish
Published 01.11.2014
Subjects
Band spectra
CRYSTAL STRUCTURE
Emission
EMISSIONS
Excitation spectra
FABRICATION
LUMINESCENCE
Nanocrystals
NCS
Optical properties
PROPERTIES
Spectra
Spectral emissivity
Zinc
光学性质
光致发光光谱
制造
时间调整
温度相关
激发态
纳米晶体
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/11/117804

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Summary:A series of Zn-Cu-In-S nanocrystals （ZCIS NCs） are prepared and the optical properties of the ZCIS NCs are tuned by adjusting the reaction time. It is interesting to observe that the temperature-dependent photoluminescence （PL） spectra of the ZCIS NCs show a redshift with decreasing intensity at low temperature （50-280 K） and a blueshift at high temperature （318--403 K）. The blueshift can be explained by the thermally active phonon-assisted tunneling from the excited states of the low-energy emission band to the excited states of the high-energy emission band.
Bibliography:A series of Zn-Cu-In-S nanocrystals （ZCIS NCs） are prepared and the optical properties of the ZCIS NCs are tuned by adjusting the reaction time. It is interesting to observe that the temperature-dependent photoluminescence （PL） spectra of the ZCIS NCs show a redshift with decreasing intensity at low temperature （50-280 K） and a blueshift at high temperature （318--403 K）. The blueshift can be explained by the thermally active phonon-assisted tunneling from the excited states of the low-energy emission band to the excited states of the high-energy emission band.
Liu Xlao-Juan, Zhang Xiao-Song, Li Lan, Wang Xue-Liang, and Yuan Lin-Lin（ Institute of Material Physics, Tianjin University of Technology, Tianjin 300384, China）
11-5639/O4
temperature-dependent photoluminescence, photoluminescence lifetime, quaternary nanocrystals, white light emitting device
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/11/117804