Funct. Mater. 2020; 27 (3): 450-453.
Photoconductivity of zinc selenide nanocrystals obtained by chemical method
1Odesa I.Mechnikov National University, 2 Dvoryanskaya Str., 65082 Odesa, Ukraine
2Uniwersytet im. Adama Mickiewicza w Poznaniu, 1 Wieniawskiego Str., 61-712 Poznan, Poland
The photoconductivity spectra of ZnSe nanocrystals deposited on porous silicon wafers and wafers with silicon nanorods are studied. After deposition of ZnSe nanocrystals, a series of lines appears in the visible region of the the photoconductivity spectra of por-Si. The high-energy photoconductivity line is due to band-gap transitions in ZnSe nanoparticles. The other five lines of photoconductivity are due to transitions involving associative donor-acceptor centers, which include both intrinsic defects and uncontrolled impurity defects.
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