Chlorine-assisted size-controlled synthesis and tunable photoluminescence in Cr-doped silica nanospheres

Dandan Wang; Guozhong Xing; Haiyang Peng; Tom Wu

doi:10.1021/jp900026g

Chlorine-assisted size-controlled synthesis and tunable photoluminescence in Cr-doped silica nanospheres

Dandan Wang, Guozhong Xing, Haiyang Peng, Tom Wu^*

^*Corresponding author for this work

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

29 Scopus citations

Abstract

Cr-doped silica nanospheres (NS) have been synthesized on Si substrates at 700 °C with a chlorine-assisted vapor transport method. CrCl₂ powder not only serves as the source for Cr doping, but also generates chlorine gas, which reacts with the Si substrates and lowers the growth temperature. The diameter and oxygen concentration of the silica NS can be tuned by the oxygen content in the carrying gas, which also affects the position and intensity of the blue and red emission bands in the photoluminescence spectra. This chlorineassisted synthesis and the associated versatile controls on size, doping, oxygen deficiency, and optical properties of the silica NS may help to advance potential NS-based technologies.

Original language	English (US)
Pages (from-to)	7065-7068
Number of pages	4
Journal	JOURNAL OF PHYSICAL CHEMISTRY C
Volume	113
Issue number	17
DOIs	https://doi.org/10.1021/jp900026g
State	Published - Apr 30 2009
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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abstract = "Cr-doped silica nanospheres (NS) have been synthesized on Si substrates at 700 °C with a chlorine-assisted vapor transport method. CrCl2 powder not only serves as the source for Cr doping, but also generates chlorine gas, which reacts with the Si substrates and lowers the growth temperature. The diameter and oxygen concentration of the silica NS can be tuned by the oxygen content in the carrying gas, which also affects the position and intensity of the blue and red emission bands in the photoluminescence spectra. This chlorineassisted synthesis and the associated versatile controls on size, doping, oxygen deficiency, and optical properties of the silica NS may help to advance potential NS-based technologies.",

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AU - Wang, Dandan

AU - Xing, Guozhong

AU - Peng, Haiyang

AU - Wu, Tom

PY - 2009/4/30

Y1 - 2009/4/30

N2 - Cr-doped silica nanospheres (NS) have been synthesized on Si substrates at 700 °C with a chlorine-assisted vapor transport method. CrCl2 powder not only serves as the source for Cr doping, but also generates chlorine gas, which reacts with the Si substrates and lowers the growth temperature. The diameter and oxygen concentration of the silica NS can be tuned by the oxygen content in the carrying gas, which also affects the position and intensity of the blue and red emission bands in the photoluminescence spectra. This chlorineassisted synthesis and the associated versatile controls on size, doping, oxygen deficiency, and optical properties of the silica NS may help to advance potential NS-based technologies.

AB - Cr-doped silica nanospheres (NS) have been synthesized on Si substrates at 700 °C with a chlorine-assisted vapor transport method. CrCl2 powder not only serves as the source for Cr doping, but also generates chlorine gas, which reacts with the Si substrates and lowers the growth temperature. The diameter and oxygen concentration of the silica NS can be tuned by the oxygen content in the carrying gas, which also affects the position and intensity of the blue and red emission bands in the photoluminescence spectra. This chlorineassisted synthesis and the associated versatile controls on size, doping, oxygen deficiency, and optical properties of the silica NS may help to advance potential NS-based technologies.

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Chlorine-assisted size-controlled synthesis and tunable photoluminescence in Cr-doped silica nanospheres

Abstract

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