Ultraviolet-induced oxygen vacancy in SrTiO3 polycrystalline

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Author list: Sriondee, Manlika; Chirayutthanasak, Ooraphan; Nammahachak, Nant; Eknapakul, Tanachat; Nakajim, Hideki; Meevasana, Worawat; Ratanaphan, Sutatch;

Publisher: American Institute of Physics

Publication year: 2021

Journal: Applied Physics Letters (0003-6951)

Volume number: 118

Issue number: 22

ISSN: 0003-6951

eISSN: 1077-3118

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107385635&doi=10.1063%2f5.0048137&partnerID=40&md5=8c8111d25f3809037ff5e4488a70bc45

Languages: English-Great Britain (EN-GB)

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Abstract

The influence of ultraviolet (UV)-induced oxygen vacancies on dynamic changes of electrical conductance in a random-oriented SrTiO3 polycrystalline and SrTiO3 single crystals with (100), (110), and (111) surfaces is reported in this study. It was discovered that a large fraction of ultraviolet-induced oxygen vacancies in the SrTiO3 polycrystalline are primarily contributed from grain boundaries, but these oxygen vacancies are less influenced to the reversible conductance changes due to UV irradiation. The dynamic change of electrical conductance in the polycrystalline is similar to what has been observed for the polar (110) and (111) oriented single crystals, offering a potential alternative for multifunctional electronic devices. © 2021 Author(s).

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