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Titolo:
New feature of the photoconductivity in p-type a-Si : H: independence of photoconductivity of p-type a-Si : H films on doping level and defect concentration
Autore:
Kuznetsov, SV;
Indirizzi:
Moscow State Univ, Dept Phys, Moscow 119899, Russia Moscow State Univ Moscow Russia 119899 Dept Phys, Moscow 119899, Russia
Titolo Testata:
THIN SOLID FILMS
fascicolo: 1-2, volume: 383, anno: 2001,
pagine: 261 - 263
SICI:
0040-6090(20010215)383:1-2<261:NFOTPI>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROGENATED AMORPHOUS-SILICON; TEMPERATURE-DEPENDENCE; RECOMBINATION;
Keywords:
p-type a-Si : H; photoconductivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Kuznetsov, SV Moscow State Univ, Dept Phys, Moscow 119899, Russia Moscow State Univ Moscow Russia 119899 scow 119899, Russia
Citazione:
S.V. Kuznetsov, "New feature of the photoconductivity in p-type a-Si : H: independence of photoconductivity of p-type a-Si : H films on doping level and defect concentration", THIN SOL FI, 383(1-2), 2001, pp. 261-263

Abstract

Experimental results and results of numerical calculations of T-dependencies of photoconductivity sigma (ph) in a-Si:H are reported. It was experimentally observed that the photoconductivity in p-type a-Si:H films (in contrast to n-type ones) depends only slightly on the Fermi level position and defect concentration at temperatures from 200 to 330 K. It is shown that suchasymmetric E-F - E-V and N-D dependencies of sigma (ph) result from asymmetry of states density distribution in tails. According to calculations, theactivated behavior of photoconductivity in p-type a-Si:H is controlled by recombination of free carriers through dangling bonds. But occupation statistic of dangling bonds in p-type a-Si:H under illumination differs essentially from the one in the dark. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 04/12/20 alle ore 09:48:52