Effectiveness of parylene coating on CdZnTe surface after optimal passivation

B. Park, Y. Kim, J. Seo, K. Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Parylene coating was adopted on CdZnTe (CZT) detector as a mechanical protection layer after wet passivation with hydrogen peroxide (H2O2) and ammonium fluoride (NH4F). Wet chemical passivant lose their effectiveness when exposed to the ambient conditions for a long time. Parylene coating could protect the effectiveness of passivation, by mechanically blocking the exposure to the ambient conditions. Stability of CZT detector was tested with the measurement of leakage current density and response to radio-isotopes. When the enough thickness of parylene (>100 μm) is adopted, parylene is a promising protection layer thereby ensuring the performance and long-term stability of CZT detectors.

Original languageEnglish
Pages (from-to)4693-4697
Number of pages5
JournalNuclear Engineering and Technology
Volume54
Issue number12
DOIs
Publication statusPublished - 2022 Dec

Keywords

  • Ammonium fluoride
  • CdZnTe
  • Hydrogen peroxide
  • Parylene
  • Passivation

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

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