Blue-green photoluminescence from ultrafine colloidal Si particles in 2-propanol

We have prepared Si nanocolloids by trapping Si ultrafine particles (UFPs) prepared by gas evaporation into an organic solvent. The average diameter of the Si UFPs is 4.8 nm. Strong blue-green photoluminescence (PL) from the Si UFPs has been observed at room temperature. The peak energy of the broad...

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Veröffentlicht in:	Japanese Journal of Applied Physics 1996-05, Vol.35 (5A), p.L551-L554
Hauptverfasser:	IWASAKI, S, IDA, T, KIMURA, K
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular clusters Atomic and molecular physics Condensed matter: electronic structure, electrical, magnetic, and optical properties Elemental semiconductors Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of clusters Optical properties of specific thin films Photoluminescence Physics Small particles Studies of special atoms, molecules and their ions clusters
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Beschreibung
Zusammenfassung:	We have prepared Si nanocolloids by trapping Si ultrafine particles (UFPs) prepared by gas evaporation into an organic solvent. The average diameter of the Si UFPs is 4.8 nm. Strong blue-green photoluminescence (PL) from the Si UFPs has been observed at room temperature. The peak energy of the broad PL band is about 2.5 eV. We have investigated the dependence of the PL intensity on the aging of the sample and the average diameter of the Si particles.
ISSN:	0021-4922 1347-4065
DOI:	10.1143/jjap.35.L551