On the use of the matrix pencil method for deep level transient spectroscopy:: MP-DLTS

被引:6
作者
Boussaïd, F [1 ]
Olivié, F [1 ]
Benzohra, M [1 ]
Martinez, A [1 ]
机构
[1] CNRS, Lab Anal & Architecture Syst, LAAS, F-31077 Toulouse, France
关键词
capacitance transients; deep levels; deep level transient spectroscopy (DLTS); DLTS resolution; matrix pencil; (MP) method;
D O I
10.1109/19.744327
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new approach to capacitance transient analysis, based on the matrix pencil (MP) method, is proposed for deep level transient spectroscopy (DLTS) (MP-DLTS). The MP method offers the least statistical variance of the estimates in the presence of noise, Simulation tests have shown this method to lead to a significant improvement in DLTS resolution even for low trap concentrations. Its noise sensitivity and resolution are quantified and compared with five different DLTS analysis techniques. The MP-DLTS method is found to outperform both DLTS spectrum and direct transient analysis techniques. An experimental investigation of the electrically active defects induced by a germanium preamorphization step prior to dopant implantation was undertaken using the MP-DLTS method. Two electron traps were detected in all samples and characterized.
引用
收藏
页码:692 / 697
页数:6
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