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Masłowska A, Kochanowska DM, Sulich A, Domagala JZ, Dopierała M, Kochański M, Szot M, Chromiński W, Mycielski A. Bridgman-Grown (Cd,Mn)Te and (Cd,Mn)(Te,Se): A Comparison of Suitability for X and Gamma Detectors. Sensors (Basel) 2024; 24:345. [PMID: 38257444 PMCID: PMC10819988 DOI: 10.3390/s24020345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/30/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
This study explores the suitability of (Cd,Mn)Te and (Cd,Mn)(Te,Se) as room-temperature X-ray and gamma-ray detector materials, grown using the Bridgman method. The investigation compares their crystal structure, mechanical and optical properties, and radiation detection capabilities. Both crystals can yield large-area single crystal samples measuring approximately 30 × 30 mm2. In low-temperature photoluminescence analysis, both materials showed defect states, and annealing in cadmium vapors effectively eliminated donor-acceptor pair luminescence in (Cd,Mn)Te but not in (Cd,Mn)(Te,Se). Moreover, harder (Cd,Mn)(Te,Se) exhibited a higher etch pit density compared to softer (Cd,Mn)Te. X-ray diffraction examination revealed uniform lattice constant distribution in both compounds, with variations at a part per million level. (Cd,Mn)Te crystals demonstrated excellent single crystal properties with narrower omega scan widths, while (Cd,Mn)(Te,Se) exhibited a high contribution of block-like structures with significantly larger misorientation angles. Spectroscopic evaluations revealed better performance of a pixelated (Cd,Mn)Te detector, in comparison to (Cd,Mn)(Te,Se), achieving a mean full width at half maximum of 14% for the 122 keV gamma peak of Co-57. The reduced performance of the (Cd,Mn)(Te,Se) detector may be attributed to deep trap-related luminescence or block-like structures with larger misorientation angles. In conclusion, Bridgman-grown (Cd,Mn)Te emerges as a more promising material for X-ray and gamma-ray detectors when compared to (Cd,Mn)(Te,Se).
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Affiliation(s)
- Aneta Masłowska
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
| | - Dominika M. Kochanowska
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
| | - Adrian Sulich
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
| | - Jaroslaw Z. Domagala
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
| | - Marcin Dopierała
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
| | - Michał Kochański
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
| | - Michał Szot
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
- International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland
| | - Witold Chromiński
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland;
| | - Andrzej Mycielski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland; (D.M.K.); (A.S.); (J.Z.D.); (M.D.); (M.K.); (M.S.)
- Puremat Technologies Sp. z o.o., Aleja Lotników 32/46, 02-668 Warsaw, Poland
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