红外与毫米波学报, 2013, 32 (3): 225, 网络出版: 2013-06-25
HgCdTe薄膜材料组分分布对器件响应光谱的影响
Effect of composition distribution in the HgCdTe film on spectral response of device
HgCdTe红外探测器 纵向组分分布 响应光谱 光传输模型 HgCdTe IR detector longitudinal composition distribution spectral response model of light transmission
摘要
研究了HgCdTe液相外延薄膜的纵向组分分布对探测器响应光谱的影响.提出了一种计算HgCdTe红外探测器响应光谱的模型，模型中综合考虑了薄膜的实际组分分布以及光在器件各层结构中的相干、非相干传输.计算结果表明，在探测器的光吸收区，HgCdTe液相外延薄膜的组分梯度及其产生的内建电场可以显著地提高器件的响应率.通过与实验数据进行比较，验证了模型的适用性.
Abstract
The effect of LPE HgCdTe longitudinal composition distribution on device’s spectral response was studied. A new model was proposed to calculate the spectral response of HgCdTe IR detector. This model considered the real composition distribution in HgCdTe film. The coherent and incoherent light transmission among the device were also included. The calculated result indicates that the composition gradient of LPE HgCdTe film and the built-in electric field can evidently improve the response of the device. The calculated result agreed with the measured data, and proved the accuracy of the model.
崔宝双, 魏彦锋, 孙权志, 杨建荣. HgCdTe薄膜材料组分分布对器件响应光谱的影响[J]. 红外与毫米波学报, 2013, 32(3): 225. CUI Bao-Shuang, WEI Yan-Feng, SUN Quan-Zhi, YANG Jian-Rong. Effect of composition distribution in the HgCdTe film on spectral response of device[J]. Journal of Infrared and Millimeter Waves, 2013, 32(3): 225.
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