Nanosecond and microsecond decay of photogenerated charges in CdxZn1−xS nanoparticles View Full Text


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Article Info

DATE

2007-09

AUTHORS

A. L. Stroyuk, V. M. Dzhagan, S. Ya. Kuchmii, M. Ya. Valakh, D. R. T. Zahn, C. von Borczyskowski

ABSTRACT

The luminescent characteristics of CdxZn1−xS nanoparticles were studied. It was shown that the emission is due to the recombination of holes in the valence band with electrons captured by two sorts of traps, of which the traps with lower energy were ascribed to the surface states of the CdxZn1−xS nanoparticles. It was established that the CdxZn1−xS nanoparticles have more pronounced ability than CdS nanoparticles to accumulate excess negative charge under the conditions of pulsed irradiation. It was shown that the consumption of the photogenerated electrons in nanosecond and microsecond time scales involves the participation of one and the same electron traps. It was established that the rate of interaction of the electrons captured by the surface traps with oxygen increases with decrease in the size of the nanoparticles. More... »

PAGES

297-305

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11237-007-0037-8

DOI

http://dx.doi.org/10.1007/s11237-007-0037-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1006687625


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