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UV and Blue Photoluminescence from Silicon Nanocolloids

Published online by Cambridge University Press:  15 February 2011

Shingo Iwasaki  and
Keisaku Kimura
Shingo Iwasaki
Affiliation:
Department of Material Science, Faculty of Science, Himeji Institute of Technology, 1479–1, Kamigori, Hyogo, 678–12, Japan
Keisaku Kimura
Affiliation:
Department of Material Science, Faculty of Science, Himeji Institute of Technology, 1479–1, Kamigori, Hyogo, 678–12, Japan
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Abstract

We have prepared silicon nanocolloids by trapping silicon nanocrystallites produced by a gas evaporation method into an organic liquid. Blue photoluminescence (PL) at a peak maximum around 480 nm from silicon nanocolloids has been observed at room temperature. The external quantum efficiency of blue PL is 0.16 %. A room temperature UV PL has been observed by dropping alkaline solids such as sodium hydroxide (NaOH), potassium hydroxide (KOH) and calcium hydroxide (Ca(OH)2) into silicon nanocolloids. The mechanism of blue and UV PL from silicon nanocolloids is discussed.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 452 , 1996 , 165
Copyright
Copyright © Materials Research Society 1997

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References

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