Photoluminescence of n-type ZnSe crystals doped with donor and acceptor impurities from a LiCl salt melt
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IVANOVA, Galina, KASIYAN, Vladimir, NEDEOGLO, Dumitru. Photoluminescence of n-type ZnSe crystals doped with donor and acceptor impurities from a LiCl salt melt. In: Semiconductors, 1997, vol. 31, pp. 1144-1147. ISSN 1063-7826. DOI: https://doi.org/10.1134/1.1187283
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Semiconductors
Volumul 31 / 1997 / ISSN 1063-7826

Photoluminescence of n-type ZnSe crystals doped with donor and acceptor impurities from a LiCl salt melt

DOI:https://doi.org/10.1134/1.1187283

Pag. 1144-1147

Ivanova Galina, Kasiyan Vladimir, Nedeoglo Dumitru
 
Moldova State University
 
 
Disponibil în IBN: 15 octombrie 2023


Rezumat

The photoluminescence spectra and luminescence excitation spectra (LESs) of n-type ZnSe single crystals annealed in LiCl melt is investigated in the temperature range from 82 to 420 K. It is established that such heat treatment of the crystals greatly decreases the intensity of the long-wavewlength luminescence bands and intensifies the edge radiation. The excitation spectrum of the long-wavelength photoluminescence bands contains several maxima near the fundamental and impurity absorption edges, it is shown that the complicated structure of the luminescence excitation spectra is due to relocation of a nonequilibrium hole from a shallow acceptor to a deeper acceptor by an Auger process with the participation of carriers localized at these centers. 

Cuvinte-cheie
Annealing, ceramics, emissions