Effectiveness of parylene coating on CdZnTe surface after optimal passivation

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

doi:10.1016/j.net.2022.08.016

Effectiveness of parylene coating on CdZnTe surface after optimal passivation

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

School of Health and Environmental Science

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	4693-4697
Number of pages	5
Journal	Nuclear Engineering and Technology
Volume	54
Issue number	12
DOIs	https://doi.org/10.1016/j.net.2022.08.016
Publication status	Published - 2022 Dec

Keywords

Ammonium fluoride
CdZnTe
Hydrogen peroxide
Parylene
Passivation

ASJC Scopus subject areas

Nuclear Energy and Engineering

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10.1016/j.net.2022.08.016

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@article{2752e00062534679b5ffa9c1546ea4a4,

title = "Effectiveness of parylene coating on CdZnTe surface after optimal passivation",

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.",

keywords = "Ammonium fluoride, CdZnTe, Hydrogen peroxide, Parylene, Passivation",

author = "B. Park and Y. Kim and J. Seo and K. Kim",

note = "Funding Information: This work was supported by the National Research Foundation of Korea ( NRF ) grant funded by the Korea government ( MSIT ) (No. 2018M2A2B3A01072384 ) and by Korea Institute of Energy Technology Evaluation and Planning ( KETEP ) grant funded by the Korea government ( MOTIE ) ( 20214000000070 , Promoting of expert for energy industry advancement in the field of radiation technology). Publisher Copyright: {\textcopyright} 2022 Korean Nuclear Society",

year = "2022",

month = dec,

doi = "10.1016/j.net.2022.08.016",

language = "English",

volume = "54",

pages = "4693--4697",

journal = "Nuclear Engineering and Technology",

issn = "1738-5733",

publisher = "Korean Nuclear Society",

number = "12",

}

TY - JOUR

T1 - Effectiveness of parylene coating on CdZnTe surface after optimal passivation

AU - Park, B.

AU - Kim, Y.

AU - Seo, J.

AU - Kim, K.

N1 - Funding Information: This work was supported by the National Research Foundation of Korea ( NRF ) grant funded by the Korea government ( MSIT ) (No. 2018M2A2B3A01072384 ) and by Korea Institute of Energy Technology Evaluation and Planning ( KETEP ) grant funded by the Korea government ( MOTIE ) ( 20214000000070 , Promoting of expert for energy industry advancement in the field of radiation technology). Publisher Copyright: © 2022 Korean Nuclear Society

PY - 2022/12

Y1 - 2022/12

N2 - 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.

AB - 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.

KW - Ammonium fluoride

KW - CdZnTe

KW - Hydrogen peroxide

KW - Parylene

KW - Passivation

UR - http://www.scopus.com/inward/record.url?scp=85137691826&partnerID=8YFLogxK

U2 - 10.1016/j.net.2022.08.016

DO - 10.1016/j.net.2022.08.016

M3 - Article

AN - SCOPUS:85137691826

VL - 54

SP - 4693

EP - 4697

JO - Nuclear Engineering and Technology

JF - Nuclear Engineering and Technology

SN - 1738-5733

IS - 12

ER -

Effectiveness of parylene coating on CdZnTe surface after optimal passivation

Abstract

Keywords

ASJC Scopus subject areas

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