InSb is a typical AⅢBⅤ semiconducting compound which contains a polar axis.In this paper,effect of the polarity of InSb on etching has been studied.The cause of the effect on etching has been analyzed.Experiment results indicate different etching rates for (111) and(211) planes with CP4 etchant.The etch rate for (111)A planes is 2.2 μm/s and 3.6 μm/s for (111)B planes.The etch rate for (211)A planes is 3 μm/s and 4.8 μm/s for (211)B planes.However,effect of the polarity on etching has not been shown for (110) planes.The etch rate of the (110) planes is 4 μm/s.
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马攀,陈湘伟,司俊杰. InSb(111)、(211)及(110)晶面腐蚀极性研究[J].激光与红外,2009,39(10):1078~1081 MA Pan, CHEN Xiang-wei, SI Jun-jie. Effect of the polarity of InSb (111),(211) and (110) planes on etching[J]. LASER & INFRARED,2009,39(10):1078~1081