Shallow trapping centers in Bi12GeO20 single crystals by thermally stimulated current measurements

Delice, S.; Isik, M.; Gasanly, Nizami

doi:10.1016/j.mtcomm.2022.104556

Materials Today Communications

2022

DOI: 10.1016/j.mtcomm.2022.104556

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Shallow trapping centers in Bi12GeO20 single crystals by thermally stimulated current measurements

S. Delice¹,

M. Isik²,

Nizami Gasanly³

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2024

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Revealing defect centers in PbWO4 single crystals using thermally stimulated current measurements

Isik,

Gasanly

2024

Journal of Applied Physics

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The trap centers have a significant impact on the electronic properties of lead tungstate (PbWO4), suggesting their crucial role in optoelectronic applications. In the present study, we investigated and revealed the presence of shallow trap centers in PbWO4 crystals through the utilization of the thermally stimulated current (TSC) method. TSC experiments were performed in the 10–280 K range by applying a constant heating rate. The TSC spectrum showed the presence of a total of four peaks, two of which were overlapped. As a result of analyzing the TSC spectrum using the curve fit method, the activation energies of revealed centers were found as 0.03, 0.11, 0.16, and 0.35 eV. The trapping centers were associated with hole centers according to the comparison of TSC peak intensities recorded by illuminating the opposite polarity contacts. Our findings not only contribute to the fundamental understanding of the charge transport mechanisms in PbWO4 crystals but also hold great promise for enhancing their optoelectronic device performance. The identification and characterization of these shallow trap centers provide valuable insights for optimizing the design and fabrication of future optoelectronic devices based on PbWO4.

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Revealing defect centers in PbWO4 single crystals using thermally stimulated current measurements

Isik,

Gasanly

2024

Journal of Applied Physics

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Shallow trapping centers in Bi12GeO20 single crystals by thermally stimulated current measurements

Cited by 1 publication

References 29 publications

Revealing defect centers in PbWO4 single crystals using thermally stimulated current measurements

Revealing defect centers in PbWO4 single crystals using thermally stimulated current measurements

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