综述了近年来对InAs/GaInSb Ⅱ型超晶格材料的研究结果,给出了禁带宽度与各层厚度和组分的关系。InAs/GaInSb Ⅱ型超晶格材料对应的工作波长范围在3—25μm,有望在LWIR和VLWIR方面替代HgCdTe。
In this paper,recent research results for type Ⅱ InAs/GalnSb superlattices material will be reviewed. The dependence of energy gap on layer widths and alloy concentration is presented. The energy gap of type Ⅱ InAs/ GalnSb superlattices material can be tuned to respond to wavelengths in the 3 ~ 25 μm regime. It will also likely be an attractive alternative to HgCdTe for LWIR and VLWIR applications.