Identification of near-infrared luminescence in ZnSe
M U Lehr; B Litzenburger; J Kreissl; U W Pohl; H R Selber; H-J Schulz; A Klimakow; L Worschech
Журнал:
Journal of Physics: Condensed Matter
Дата:
1997-01-20
Аннотация:
A Cr-related near-infrared photoluminescence (PL) band in ZnSe with a main no-phonon line at is investigated. Zeeman splitting indicates a tetragonally distorted ground state. The experimental data agree well with calculations using a spin Hamiltonian with parameters obtained from the ground state of . This contradicts a former assignment of the PL band to a emission of . Crystal field calculations demonstrate that the observed no-phonon lines and the corresponding luminescence band can reasonably be interpreted in terms of a transition within the configuration of . Furthermore, the influence of unmodulated supplementary irradiation on transmission and PL excitation spectra is discussed.
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