Optimal passivation process for improved spectroscopic grade CdMnTeSe single crystals based on chromic acid
This study explores the effects of novel H 2 CrO 4 -based passivant on Cd 0.95 Mn 0.05 Te 0.98 Se 0.02 (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.
Authors
- Beomjun Park (ORCID: https://orcid.org/0000-0002-7822-9919)
- Cheol Yoon
- Younghak Kim (ORCID: https://orcid.org/0000-0002-5956-1254)
- Jangwon Byun (ORCID: https://orcid.org/0000-0001-8239-1794)
- Jiwon Seo (ORCID: https://orcid.org/0009-0004-0213-2856)
- Jung‐Yeol Yeom (ORCID: https://orcid.org/0000-0001-6780-4263)
- Hansoo Kim (ORCID: https://orcid.org/0000-0002-4014-8670)
- Seung-Ho Song (ORCID: https://orcid.org/0009-0000-6545-4087)
- Taejoon Mo (ORCID: https://orcid.org/0009-0004-2546-0692)
Institutions
- Korea Atomic Energy Research Institute (KR)
- Korea University (KR)
- Konkuk University (KR)
- Bioengineering Center (RU)
- Korea University (JP)
Publication Details
- Journal
- Nuclear Engineering and Technology
- Published
- 2025-03-17
- DOI
- https://doi.org/10.1016/j.net.2025.103577
- Primary Topic
- Advanced Semiconductor Detectors and Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00