Micro-Raman spectra of Cd1-yZnyTe crystals

Micro-Raman spectra of four annealing Cd1-yZnyTe crystal samples with small concentrations (x=0.04) were measured within the spectral rang of 40cm(-1) to 500cm(-1). Three main Raman scattering peaks (121cm(-1), 140cm(-1), 161cm(-1)) were found in all four samples and that the Raman peaks (121cm(-1), 140cm(-1)) in the samples get higher and narrower with longer annealing time. Strong photoluminescence in the four samples also were observed, which come from the band edge radiation. The composition value y of Cd1-yZnyTe crystals can be easily calculated by using these micro-photoluminescence peaks.