Ultraviolet-excited photoluminescence and Raman scattering in Cd1-xMnxTe-CdTe microstructures

Perkowitz, S.; Yom, S. S.; Bicknell, R. N.; Schetzina, J. F.
April 1987
Applied Physics Letters;4/13/1987, Vol. 50 Issue 15, p1001
Academic Journal
Photoluminescence (PL) and Raman scattering from Cd1-xMnxTe-CdTe superlattices (x=0.06, 0.23, and 0.45) have been excited for the first time by ultraviolet light of energy 3.4–3.7 eV. The PL spectra show the known confinement-enhanced E0(Γ6,c-Γ8,v) transition and a new peak near the E0+Δ0(Γ6,c-Γ7,v) transition. Raman spectra resemble those from bulk Cd1-xMnxTe. Resonant or nearly resonant Raman scattering, manifested through phonon overtones, occurs near the E0+Δ0 and E1(Λ6,c-Λ4,5,v) transitions. A superlattice with extremely thin layers (16 Å/21 Å) shows good Raman spectral quality.


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