超高纯锗棒或锭的净杂质浓度检测方法

Method for Determination of Net Impurity Concentrations in Ultra High Purity Germanium Bars or Ingots

介绍了一种检测超高纯锗棒或锭的净杂质浓度的新方法,采用直流两探针法,在77K恒温下进行检测;两探针检测得到等间距电压降U,通过函数关系式计算得到电阻率ρ,再根据函数关系式|NA-ND|=1/(ρ×q×μ),计算得到探针笔间的锗棒或锭的平均净杂质浓度|NA-ND|。该方法可以检测锗棒或锭的整体杂质浓度,检测结果相对准确,检测效率高,有利于产业化。

A new method for detecting the net impurity concentration of ultra-high purity germanium bars or ingots was introduced.The equal distance voltage drop U was detected with two probes,the value of the resistivityρwas calculated with the function relation,and then on the basis of the function relationship|N A-N D|=1/(ρ×q×μ),the average net impurity concentration between two points was calculated.This method could detect the whole impurity concentration of germanium bars or ingots,the detection result was relatively accurate,the detection efficiency was high,and it was also beneficial to industrialization.