Schematic drawing of the ZnCdSe/ZnCdMgSe QWIP structure.
High-resolution XRD curve obtained from a coupled θ/2θ scan for sample M. The periodicity determined from the satellite peak spacing of Δ(2θ) = 0.387° is 268 Ǻ. The observation of clear thickness fringes is an indication of excellent crystal quality of the sample.
(Color online) PL spectra measured at 77 K for samples L and M. Strong and sharp emissions with no noticeable deep levels were observed.
(Color online) Spectral response of sample L measured at 78 K under 2 V bias. ISB absorption measured at RT is also shown for comparison.
(Color online) Spectral response of sample M measured at different temperatures.
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