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Titolo:
Special features of relaxation of metastable states induced thermally and by photoexcitation in (a-Si : H): P films
Autore:
Kurova, IA; Larina, EV; Ormont, NN;
Indirizzi:
Moscow MV Lomonosov State Univ, Moscow 119899, Russia Moscow MV Lomonosov State Univ Moscow Russia 119899 oscow 119899, Russia
Titolo Testata:
SEMICONDUCTORS
fascicolo: 3, volume: 34, anno: 2000,
pagine: 358 - 362
SICI:
1063-7826(2000)34:3<358:SFOROM>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROGENATED AMORPHOUS-SILICON; A-SI-H; EQUILIBRIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Kurova, IA Moscow MV Lomonosov State Univ, Moscow 119899, Russia Moscow MVLomonosov State Univ Moscow Russia 119899 9, Russia
Citazione:
I.A. Kurova et al., "Special features of relaxation of metastable states induced thermally and by photoexcitation in (a-Si : H): P films", SEMICONDUCT, 34(3), 2000, pp. 358-362

Abstract

Kinetics of relaxation of metastable states that are induced thermally or by photoexcitation and cause an increase in dark electrical conductivity of(a-Si:H):P films is discussed. It is established that the relaxation is described by expanded exponential functions with the parameters tau and beta depending differently on temperature in the cases of thermal excitation andphotoexcitation. Thus, the relaxation of photo-induced states is characterized by a decrease in beta with temperature, whereas the parameter beta is almost temperature-independent for thermally induced states. It is shown that these dissimilar temperature dependences of beta correlate with temperature variations of the half-width of annealing-energy distribution for thesestates. The observed features of relaxation of thermally induced and photo-induced metastable states are caused by different mechanisms of their formation. The origin of these states can be the same and related to activationof hydrogen-passivated phosphorus atoms. (C) 2000 MAIK "Nauka/Interperiodica".

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 14:18:51