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- W1566971751 abstract "Relaxation of pulsed photocurrents under optical bias is studied in amorphous films of glassy alloys As<sub>2</sub>Se<sub>3</sub>:Sn<sub>x</sub> (x=0 to 3.5 at. %) by the time-of-flight technique and steepness band-to-band light illumination. In frame of multiple-trapping model it is shown that by adding tin to the glass former As<sub>2</sub>Se<sub>3</sub>, the hole drift mobility is strongly increased and hamper the recombination. The kinetics of the long-term photocurrent decay can be described by stretched exponential hction. The dispersion parameter a, which can be deduced from the time dependence of the photocurrent I<sub>ph</sub>(t) -infinity- exp[-(τ/τ)<sup>α</sup>] and, is about 0.47 for undoped samples, and 0.35 for tin-containing samples. The obtained results indicate the variation in occupation of deep localized centers. For the investigated samples, the width of distribution of the deep traps is approximately kT/α~50-70 meV." @default.
- W1566971751 created "2016-06-24" @default.
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- W1566971751 date "2005-08-15" @default.
- W1566971751 modified "2023-09-23" @default.
- W1566971751 title "<title>Transient photocurrent in α-As<formula><inf><roman>2</roman></inf></formula>Se<formula><inf><roman>3</roman></inf></formula> thin films with optical bias</title>" @default.
- W1566971751 doi "https://doi.org/10.1117/12.639445" @default.
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