碲镉汞红外探测器量子效率计算研究

Study on the quantum efficiency calculation of HgCdTe infrared detector

首先分析了量子效率计算的相关方法,然后分析红外碲镉汞探测器测试过程。对器件进行电学性能测试及光谱响应测试基础上,利用测试方法和测试数据计算出探测器产生的电子数。再将实际电子数与理论分析的光子数相比,计算出探测器对不同红外波段量子效率,最高可达66%,达到了国外同类型器件响应的量子效率指标。本文的研究为评价碲镉汞探测器的光电转换性能提供了一种有效的方法。

First,the method of quantum efficiency calculation is analyzed in the paper.Then,the test process of MCT detector is analyzed.Based on the test results of electrical parameters and spectral response of the device,the number of electrons produced by the detector is calculated by the test method and test data.By comparing the actual electronic number with the theoretical photon number,the quantum efficiency of infrared detector for different brands is calculated,which can be up to 66 %,reaching the quantum efficiency index of the response of the same type of devices abroad.This study provides an effective method for evaluating the photoelectric conversion performance of HgCdTe detector.