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Titolo:
MICROWAVE CONDUCTIVITY AND SPIN-RESONANCE OF SI-NK CENTERS AT DISLOCATION DIPOLES IN SILICON
Autore:
KONCHITS AA; SHANINA BD;
Indirizzi:
RUHR UNIV BOCHUM,LEHRSTUHL WERKSTOFFTECHN,GEBAUDE IA 2-152 D-44780 BOCHUM GERMANY NATL ACAD SCI,INST SEMICOND PHYS KIEV 252650 UKRAINE
Titolo Testata:
Physica. B, Condensed matter
fascicolo: 4, volume: 215, anno: 1995,
pagine: 404 - 414
SICI:
0921-4526(1995)215:4<404:MCASOS>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWN SILICON; DONORS; DEFECTS; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
A.A. Konchits e B.D. Shanina, "MICROWAVE CONDUCTIVITY AND SPIN-RESONANCE OF SI-NK CENTERS AT DISLOCATION DIPOLES IN SILICON", Physica. B, Condensed matter, 215(4), 1995, pp. 404-414

Abstract

Non-resonance microwave absorption (NRMA) due to microwave conductivity (MC) of Czochralski-grown silicon crystal has been studied. The temperature dependence of the MC was measured in the temperature range from 1.7 to 40 K in darkness as well as under the interband light. Exponential growth of the MC in a low temperature range is described withinthe extended one-dimensional Hubbard model for the case of an arbitrary filled band. The activation energy of electron hopping motion in darkness is found to be similar to that in amorphous silicon (0.4 meV), although, under light its value is significantly larger (12 meV). The logarithmic law is revealed for the MC decay. The value of its time constant tau(0) at T = 4.2 K changes with the light intensity I from 4 to 57 s, so tau(0) is proportional to I-1. The exponential recovery process at T = 4.2 K goes rather slowly, with tau(1) in interval from 0.4to 3.11 min depending on the location of the donor levels in a band gap. It is shown that the linear law connects the dependence of the TD-2 EPR intensity increase and the Si-nK EDSR intensity decrease versus the MC decay under continuous illumination.

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Documento generato il 20/09/20 alle ore 10:43:15