Environmentally safe layered crystal produced from hazardous chemical elements: TlPb2BrI4, a new promising detector material

Khyzhun OY, Vu TV, Parasyuk OV, Fedorchuk AO, Fochuk PM, Lavrentyev AA, Gabrelian BV, Levchuk I, Matt G, Tedde SF, Schmidt O, Shrestha S, Brabec C, Kityk IV, Piasecki M (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 924

Article Number: 166558

DOI: 10.1016/j.jallcom.2022.166558

Abstract

Exploring better Gamma, X-Ray and IR-Mid-R detectors, adequately sensitive to ambient temperatures and environmental conditions, is highly desirable. Therefore, following this path, we present detecting opportunities, based on data of experimental and theoretical investigation of the electronic and optical properties, photocurrent behavior at different bias voltages as well as the reflection for the He-Cd cw laser after irradiation by three different IR laser wavelengths, for recently grown TlPb2BrI4 single crystal with strong anisotropic, two-dimensional (2D) layered structure. The X-ray photoelectron spectroscopy brings data on binding energy values of core levels of TlPb2BrI4 for both as-grown and Ar⁺-ion-treated crystal surfaces as well as for elucidation of the energy distribution of the valence electronic states. In opposite to well-known IR-detector materials, TlPb2BrI4 crystal surface shows high chemical stability concerning Ar⁺-ion bombardment. Further, we carry out ab initio band-structure calculations to gain curves of total and partial densities of states and to elucidate the principal optical constants of TlPb2BrI4. The present studies indicate that, in spite of the fact that the TlPb2BrI4 crystal contains two very hazardous/toxic chemical elements, thallium and lead; however, it is chemically stable and reveals very low hygroscopic behavior when being exposed to environmental conditions.

Authors with CRIS profile

Involved external institutions

National Academy of Medical Sciences of Ukraine (NAMS) / NAMS Ukraine Ukraine (UA) Lesya Ukrainka Volyn National University / Волинський національний університет імені Лесі Українки Ukraine (UA) Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv Ukraine (UA) Don State Technical University Russian Federation (RU) Częstochowa University of Technology (CUT) / Politechnika Częstochowska Poland (PL) Van Lang University / Van Lang Private University, Đại học Dân lập Văn Lang Viet Nam (VN) Yuriy Fedkovych Chernivtsi National University Ukraine (UA)

How to cite

APA:

Khyzhun, O.Y., Vu, T.V., Parasyuk, O.V., Fedorchuk, A.O., Fochuk, P.M., Lavrentyev, A.A.,... Piasecki, M. (2022). Environmentally safe layered crystal produced from hazardous chemical elements: TlPb2BrI4, a new promising detector material. Journal of Alloys and Compounds, 924. https://dx.doi.org/10.1016/j.jallcom.2022.166558

MLA:

Khyzhun, O. Y., et al. "Environmentally safe layered crystal produced from hazardous chemical elements: TlPb2BrI4, a new promising detector material." Journal of Alloys and Compounds 924 (2022).

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