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降低平面结型碲镉汞焦平面阵列光串音的结构优化研究

Keywords: 碲镉汞(MCT)焦平面阵列光串音器件模拟

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Abstract:

研究了一种能够降低平面结型碲镉汞(HgCdTe,MCT)焦平面阵列光串音的新型结构.该结构通过对平面结型MCT焦平面阵列的衬底几何形状的优化设计,来达到增大光响应率、减少光串音的目的,以期提高器件的性能.提出了结构优化的快速近似设计方法,并利用商用器件模拟软件对Hg0.78Cd0.22Te器件进行了二维模拟.计算结果显示:当少子寿命为10ns时.经过优化设计后的器件,光响应率增加了9.6%,光串音从未优化前的5.23%减小到1.05%.

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