Electro and electro-photo plasticity of CdZnTeSe and CdZnTe

Dědič, Václav; Franc, Jan; Moravec, Pavel; Grill, Roman; Elhadidy, Hassan; Šíma, Vladimír; Cieslar, Miroslav; Roy, Utpal N.; James, Ralph B.

doi:10.1016/j.mtcomm.2022.105076

Title: Electro and electro-photo plasticity of CdZnTeSe and CdZnTe

Journal Article · Fri Dec 09 00:00:00 EST 2022 · Materials Today Communications

DOI:https://doi.org/10.1016/j.mtcomm.2022.105076· OSTI ID:1915267

Dědič, Václav ^[1]; Franc, Jan ^[1]; Moravec, Pavel ^[1]; Grill, Roman ^[1]; Elhadidy, Hassan ^[1]; Šíma, Vladimír ^[1]; Cieslar, Miroslav ^[1]; Roy, Utpal N. ^[2]; James, Ralph B. ^[2]

Charles Univ., Prague (Czech Republic)
Savannah River National Laboratory (SRNL), Aiken, SC (United States)

In this work, we studied the influence of applied bias on of the Vickers microhardness HV 0.025 of CdZnTeSe and CdZnTe semi-insulating samples without and with the illumination of light at 870 nm. We observed that a small applied bias results in the hardening of the material. The effect is strongest at a bias of ± 0.5 V and is further strengthened by additional illumination. We suggest that the observed positive electro and electro-photo plastic effects in CdZnTeSe and CdZnTe can be explained by an increase in the concentration of free electrons and holes injected from contacts in a biased sample or generated by illumination. These free carriers can be trapped at dislocations and induce a reconstruction of bonds at the dislocation core. The necessity to break the bonds before dislocation glide results in an increase of microhardness.

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Research Organization:: Savannah River Site (SRS), Aiken, SC (United States); Savannah River National Laboratory (SRNL), Aiken, SC (United States)

Sponsoring Organization:: USDOE Office of Environmental Management (EM); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: 89303321CEM000080

OSTI ID:: 1915267

Alternate ID(s):: OSTI ID: 2315744

Report Number(s):: SRNL-STI-2022-00438; TRN: US2312225

Journal Information:: Materials Today Communications, Vol. 34; ISSN 2352-4928

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
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Title: Electro and electro-photo plasticity of CdZnTeSe and CdZnTe

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