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Long-range order in CdZnTe epilayers

机译:CdZnTe外延层中的远距离有序

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We report the evidence of long-range order (LRO) in CdZnTe epilayers grown by metal organic chemical vapour deposition (MOCVD) on (100) CdTe. LRO has been characterized by both transmission electron microscopy (TEM) and polarized photoluminescence (PL) measurements. The observation of extra-spots in the diffraction pattern of Cd0.52Zn0.48Te samples indicate the CuPt type structure, as corroborated by computer simulation. Valence band splitting (VBS) up to 25 meV, measured by polarized PL gives additional proof of atomic ordering. The order parameter eta = 0.6 was calculated from VBS using a parabolic approximation. [References: 19]
机译:我们报告了在(100)CdTe上通过金属有机化学气相沉积(MOCVD)生长的CdZnTe外延层中的远距离有序(LRO)的证据。 LRO已通过透射电子显微镜(TEM)和偏振光致发光(PL)测量进行了表征。 Cd0.52Zn0.48Te样品衍射图样中观察到的额外斑点表明,CuPt型结构已得到计算机模拟的证实。通过极化PL测量的高达25 meV的价带分裂(VBS)提供了原子序的额外证据。使用抛物线近似从VBS计算阶数参数eta = 0.6。 [参考:19]

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