Dr. Utpal N. Roy Profile

Dr. Utpal N. Roy

Senior Advisory Scientist

SPIE Involvement:

Conference Program Committee | Author

Publications (29)

Proceedings Article | 3 October 2022 Presentation

Native defect chemistry of THM-grown Cd_{x}Zn{1-x}Te{y}Se_{1-y} from first principles (Conference Presentation)

Jonathon Baker, Utpal Roy

Proceedings Volume PC12241, PC122410B (2022) https://doi.org/10.1117/12.2635812

KEYWORDS: Chemistry, Temperature metrology, Sensors, Semiconductor materials, Mechanics, Materials science, Materials processing, Crystals, Crystallography, Computer simulations

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Proceedings Article | 3 October 2022 Presentation

Low temperature photoluminescence (PL) and high-resolution X-ray diffraction study of traveling heater method (THM) grown Cd0.9Zn0.1Te0.98Se0.02 crystals (Conference Presentation)

Utpal Roy, Jonathon Baker, Giuseppe Camarda, Yonggang Cui, Ge Yang, Ralph James

Proceedings Volume PC12241, PC122410A (2022) https://doi.org/10.1117/12.2635769

KEYWORDS: X-ray diffraction, Crystals, Luminescence, Crystallography, Selenium, Excitons, Compound semiconductors

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Proceedings Article | 1 September 2021 Presentation + Paper

A CdZnTeSe gamma spectrometer trained by deep convolutional neural network for radioisotope identification

Sandeep Chaudhuri, Joshua Kleppinger, Ritwik Nag, Kaushik Roy, Rojina Panta, Forest Agostinelli, Amit Sheth, Utpal Roy, Ralph James, Krishna Mandal

Proceedings Volume 11838, 1183806 (2021) https://doi.org/10.1117/12.2596456

KEYWORDS: Nuclear radiation detection, Sensors, Gamma radiation, Spectroscopy, Monte Carlo methods, Convolutional neural networks, Neural networks, Compton scattering

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Proceedings Article | 1 August 2021 Presentation

Optimization of CZTS gamma-ray detectors

Utpal Roy, Giuseppe Camarda, Yonggang Cui, Ge Yang, Ralph James

Proceedings Volume 11838, 1183804 (2021) https://doi.org/10.1117/12.2595962

KEYWORDS: Sensors, Gamma radiation, Sensor performance, Tellurium, Semiconductors, Selenium, Particle accelerators, Medical imaging, Homeland security, Astronomy

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Proceedings Article | 18 September 2018 Presentation

CdZnTeSe: An emerging room-temperature semiconductor detector material (Conference Presentation)

Utpal Roy, Giuseppe Camarda, Yonggang Cui, Rubi Gul, Ge Yang, Ralph James, Jakub Zázvorka, Václav Dedic, Jan Franc

Proceedings Volume 10762, 107620P (2018) https://doi.org/10.1117/12.2324148

KEYWORDS: Sensors, Semiconductor materials, Semiconductors, Crystals, Yield improvement, Selenium, Detector development, Gamma radiation

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Proceedings Article | 18 October 2017 Presentation

Cs2LiCeCl6: An intrinsic scintillator for dual gamma and neutron detector applications (Conference Presentation)

Utpal Roy, Giuseppe Camarda, Yonggang Cui, Rubi Gul, Anwar Hossain, Ge Yang, Ralph James, Steven Hunter, Patrick Beck, Nerine Cherepy, Stephen Payne

Proceedings Volume 10392, 103920O (2017) https://doi.org/10.1117/12.2276956

KEYWORDS: Sensors, Scintillators, Crystals, Homeland security, Spectroscopes, Sensor performance, Scattering, Material characterization, Semiconductors

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Proceedings Article | 11 October 2017 Presentation

Crystal growth of CdZnTeSe (CZTS) gamma detectors: a promising alternative to CdZnTe (Conference Presentation)

Utpal Roy, Giuseppe Camarda, Yonggang Cui, Rubi Gul, Ge Yang, Anwar Hossain, Ralph James, Jakub Zazvorka, Václav Dedic, Jan Franc, Vincenzo Lordi, Joel Varley

Proceedings Volume 10392, 103920Y (2017) https://doi.org/10.1117/12.2276955

KEYWORDS: Sensors, Crystals, Selenium, Tellurium, Sensor performance, Semiconductors, Scintillators

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