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Titolo:
Decay dynamics of visible luminescence in amorphous silicon nanoparticles
Autore:
Kanemitsu, Y; Fukunishi, Y; Kushida, T;
Indirizzi:
Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan Nara Inst Sci & Technol Nara Japan 6300101 Mat Sci, Nara 6300101, Japan
Titolo Testata:
APPLIED PHYSICS LETTERS
fascicolo: 2, volume: 77, anno: 2000,
pagine: 211 - 213
SICI:
0003-6951(20000710)77:2<211:DDOVLI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
POROUS SILICON; LIGHT EMISSION; ROOM-TEMPERATURE; SI-H; PHOTOLUMINESCENCE; CRYSTALLINE; NANOSTRUCTURES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Kanemitsu, Y Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan Nara Inst Sci & Technol Nara Japan 6300101 a 6300101, Japan
Citazione:
Y. Kanemitsu et al., "Decay dynamics of visible luminescence in amorphous silicon nanoparticles", APPL PHYS L, 77(2), 2000, pp. 211-213

Abstract

We have studied the recombination dynamics of carriers in amorphous silicon (a-Si) nanoparticles prepared by electrochemical anodization of hydrogenated a-Si films. The photoluminescence (PL) lifetime of the fast-decay component in a-Si nanoparticles is shorter than that in crystalline silicon (c-Si) nanoparticles. The energy dependence of the PL lifetime in a-Si nanoparticles is different from that in c-Si nanoparticles. The PL decay dynamics of a-Si nanoparticles is determined by recombination processes of carriers localized in the band-tail state. The origin of the blueshift of the PL spectrum in a-Si nanoparticles will be discussed. (C) 2000 American Institute of Physics. [S0003-6951(00)00728-2].

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Documento generato il 24/09/20 alle ore 08:22:55