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SM ISO690:2012 YOVU, M., KOLOMEYKO, Eduard, VASILIEV, Ion, HAREA, Diana. Optical bias effect on transient photocurrent in amorphous As2Se3: Sn films. In: Moldavian Journal of the Physical Sciences, 2005, nr. 3(4), pp. 332-341. ISSN 1810-648X. |
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Moldavian Journal of the Physical Sciences | ||||||
Numărul 3(4) / 2005 / ISSN 1810-648X /ISSNe 2537-6365 | ||||||
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Pag. 332-341 | ||||||
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Optical bias effect on transient photocurrent of As2Se3: Snx (x=0¸1.0 at.%) amorphous
films, excited by a monochromatic light pulse with long-wavelength of 0.63 mm was
investigated. The relaxation of the photocurrent has been recorded in the wide time interval
(from 0.05 up to 25 s) and was determined by capture on the deep acceptor-like traps. In a
non-doped sample of a-As2Se3 the relaxation of the photocurrent weakly depends on a level
of optical bias. For the samples with tin impurity, even the low levels of optical bias result in
sharp reduction of the photocurrent. The experimental results are discussed in frame of the
model of recombination controlled by capture on deep states. |
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