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一、前言气象卫星用红外照相机的探测部分,要求波长峰值灵敏度在10微米左右,而且响应时间要快。Ⅱ-Ⅵ族半导体合金CdHgTe可以较好地满足上述要求。但是,这种晶体的组分比很难达到理论值,至今各国也没有发现什么最好的方法。东芝公司采用改进型的布里兹曼炉,控制熔融状态的汞压,得到了一部分灵敏度高的优质晶体。虽然均匀性也不太好,但切下灵敏度高的部分,经过加
I. Preface The detection part of the infrared camera used for meteorological satellite requires the wavelength peak sensitivity to be about 10 microns and the response time should be faster. Ⅱ-Ⅵ semiconductor alloy CdHgTe can better meet the above requirements. However, the composition ratio of such crystals is difficult to reach the theoretical value, so far, no country has found any best method. Toshiba uses an improved Briezmann furnace to control the mercury pressure in the molten state, resulting in high-quality, high-sensitivity crystals. Although the uniformity is not very good, but cut off the high sensitivity of the part, after the addition