Electrochemical isothermal-capacitance-transient spectroscopy: A new depth profiling method of deep levels

S. Q. Wang, F. Lu, D. C. Oh, J. H. Chang, T. Hanada, T. Yao

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The authors report on a new depth profiling method of deep levels, which we call electrochemical isothermal-capacitance-transient spectroscopy (EICTS). This is combined with electrochemical capacitance-voltage using the Schottky barrier of etchable electrolyte and isothermal-capacitance-transient spectroscopy using the capacitance-transient profile at a fixed temperature. We proved its validity by applying to the ZnSe:N epitaxial film of thickness of more than 1000 nm and comparing the characteristics of an obtained deep level with the results measured by conventional deep-level detection techniques. It is expected that EICTS is very effective to assess the deep levels of wide-bandgap semiconductors that suffer from various point defects and their complexes.

Original languageEnglish
Article number093905
JournalReview of Scientific Instruments
Volume82
Issue number9
DOIs
Publication statusPublished - 2011 Sep 1

ASJC Scopus subject areas

  • Instrumentation

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