Compositional and Electrical Co-Characterization of HgCdTe Diodes by Cross-Sectional EBIC, AVC, and AES Analysis

T. P. Massopust, L. L. Kazmerski, R. Whitney, R. Starr

Research output: Contribution to journalArticlepeer-review

3 Scopus Citations

Abstract

Compositional and electrical characterization of Hgx_ x Cdx Te heterojunction devices has been performed by cross-sectional electron-beam induced conductivity (EBIC), Auger voltage contrast (AVC), and Auger electron spectroscopy (AES). Devices were fabricated from double layer LPE HgCdTe grown on CdTe and CdZnTe substrates. Cleaved diodes were wire bonded to a specimen mount and analyzed in a scanning Auger microscope at 123 K. This is the first reported Auger analysis of HgCdTe at cryogenic temperatures. EBIC analysis located the electrical junction while the contactless AVC also confirmed an electrical junction at the substrate interface. Subsequent AES compositional analysis located and determined interface widths of 1.2 // and 1000 A for the substrate and heterojunction interfaces, respectively. Although EBIC is a “bulk” phenomenon and AES and AVC are “surface” phenomena, results from concurrent experiments aid in relating device performance to structural composition.

Original languageAmerican English
Pages (from-to)955-957
Number of pages3
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume3
Issue number3
DOIs
StatePublished - 1985
Externally publishedYes

Bibliographical note

Work performed by Rocky Mountain Analytical Research Laboratories, Golden, Colorado, and Santa Barbara Research Center, Goleta, California

NREL Publication Number

  • ACNR/JA-213-6617

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