期刊
JOURNAL OF APPLIED PHYSICS
卷 89, 期 11, 页码 6431-6434出版社
AMER INST PHYSICS
DOI: 10.1063/1.1360706
关键词
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A sol-gel method was employed to produce a zinc oxide (ZnO) colloid consisting of ZnO nanocrystalline particles with an average diameter of similar to3 nm, and subsequently mixed with a silica (SiO2) colloid. The mixture was finally spray dried to form a powder nanocomposite. It was found that the green photoluminescence (PL) exhibited by the composite was very stable: the intensity, position, and shape do not change even after being aged over 30 days. Thus, the ZnO/SiO2 nanocomposite has a much improved PL stability over ZnO colloids, which is often found to undergo a significant redshift even after aging over a few days. Our results are expected to have significant technological implications. (C) 2001 American Institute of Physics.
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