ZnTe薄膜性能研究

Study on the Properties of ZnTe Film

用真空共蒸发法在室温下制备了ZnTe:Cu多晶薄膜。用XRD表征薄膜结构,刚沉积未掺Cu和适度掺Cu的薄膜为立方结构,高度(111)择优,重掺Cu的为立方和六方混合相。室温时薄膜的形貌和光能隙取决于掺Cu浓度和退火温度,并通过透射光谱的测量计算出光能隙。

ZnTe： Cu films were deposited by vacuum co-evaporation technique at room temperature. It shows that as-deposited and un-doped or properly Cu-doped ZnTe films are of cubic structure and highly preferential orientation of （ 111 ） while heavily Cu-doped ZnTe films of the mixture of cubic and hexagonal structure by XRD measurements. Morphology and optical energy gaps at morn temperature depend on Cu concentration in ZnTe and annealing temperatures. And optical energy gaps are calculated from the transmittance measurements.