Optimal passivation process for improved spectroscopic grade CdMnTeSe single crystals based on chromic acid

Seo, Jiwon; Song, Seungho; Byun, Jangwon; Yoon, Chaewon; Mo, Taejoon; Kim, Younghak; Kim, Hansoo; Yeom, Jung-Yeol; Park, Beomjun

doi:10.1016/j.net.2025.103577

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Optimal passivation process for improved spectroscopic grade CdMnTeSe single crystals based on chromic acid

Seo, Jiwon;
Song, Seungho;
Byun, Jangwon;
Yoon, Chaewon;
Mo, Taejoon;
... Yeom, Jung-Yeol;
외 3명

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초록

This study explores the effects of novel H2CrO4-based passivant on Cd0.95Mn0.05Te0.98Se0.02 (CMTS) detectors. Optimal passivation for 3 min improved spectroscopic performance by addressing surface defects. However, longer passivation led to degradation due to Cr-invasion, as shown by XPS analysis. The use of a virtual Frisch grid further enhanced energy resolution, highlighting the potential of CMTS detectors for high-energy gamma spectroscopy. These findings emphasize the importance of precise passivation control and suggest that improved CMTS fabrication and passivation techniques could advance the development of cost-effective, larger volume CdTe-based detectors for room temperature applications.

키워드

Passivation; CdTe-Based detector; H2CrO4; CdMnTeSe; Room temperature semiconductor detector (RTSD); CDTE; PROGRESS

제목: Optimal passivation process for improved spectroscopic grade CdMnTeSe single crystals based on chromic acid

저자: Seo, Jiwon; Song, Seungho; Byun, Jangwon; Yoon, Chaewon; Mo, Taejoon; Kim, Younghak; Kim, Hansoo; Yeom, Jung-Yeol; Park, Beomjun

DOI: 10.1016/j.net.2025.103577

발행일: 2025-08

유형: Article

저널명: Nuclear Engineering and Technology

권: 57

호: 8