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Hg_(1-x)CdxTe[(HgTe)_(1-x)(CdTe)_x,0≤x≤1]晶体是一系列制造红外探测器的重要材料。在制备这一材料时,组元的蒸气压是一个重要参数,有过不少的研究报道。对于HgTe和CdTe,最可靠的数据是用光密度法测得的:HgTe在熔点670℃的汞汽压为12.5大气压,而碲汽压要小四个数量级。CdTe在熔点1092℃的镉汽压为0.65大气压,而碲汽压为5.5×10~(-3)大
Hg_ (1-x) CdxTe [(HgTe) _ (1-x) (CdTe) _x, 0≤x≤1] crystals are a series of important materials for the fabrication of infrared detectors. In preparing this material, the vapor pressure of the component is an important parameter, there have been many studies reported. For HgTe and CdTe, the most reliable data are measured by optical densitometry: mercury vapor pressure of HgTe at 670 ° C is 12.5 atm and tellurium vapor pressure is four orders of magnitude smaller. The CdTe vapor pressure of CdTe at 1092 ℃ is 0.65 atm and the vapor pressure of tellurium is 5.5 × 10 ~ (-3)