Investigation of resolution limiting traps in single-crystalline CVD diamond radiation detector using DFT calculations

Sandeep K. Chaudhuri; Joshua W. Kleppinger; Omerfaruk Karadavut; Krishna C. Mandal

doi:10.1117/12.2596468

1 August 2021 Investigation of resolution limiting traps in single-crystalline CVD diamond radiation detector using DFT calculations

Sandeep K. Chaudhuri, Joshua W. Kleppinger, Omerfaruk Karadavut, Krishna C. Mandal

Author Affiliations +

Proceedings Volume 11838, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII; 118381G (2021) https://doi.org/10.1117/12.2596468
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Conference Poster

Abstract

Radiation detectors in planar configuration has been fabricated using CVD grown single crystalline diamond detectors. The detectors exhibited high energy-resolution for both electrons and holes transport. The performance of the diamond detectors was found to be asymmetric with respect to the bias polarity. The optimized charge collection efficiency values and the electronic noise analysis suggested the performance of the detectors is limited by the presence of electrically active defects such as nitrogen impurity. Density functional theory-based defect calculations has been performed to determine the location within the bandgap of the plausible defects that might interfere with the charge transport.

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Sandeep K. Chaudhuri, Joshua W. Kleppinger, Omerfaruk Karadavut, and Krishna C. Mandal "Investigation of resolution limiting traps in single-crystalline CVD diamond radiation detector using DFT calculations", Proc. SPIE 11838, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII, 118381G (1 August 2021); https://doi.org/10.1117/12.2596468

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