Photoluminescence in yttria-stabilized zirconia of aging effects

Kan Hachiya, Hideki Oku, and Junya Kondoh
Phys. Rev. B 71, 064111 – Published 28 February 2005

Abstract

Photoluminescence properties are studied on yttria-stabilized zirconia (YSZ) samples aged up to 1000 h at the temperature of 1073 K where the aging-induced decrease in conductivity is reported. Multiple peaks are observed under irradiation of sub-band-gap light of 3.81 eV by a He-Cd laser. Their intensities depend on aging time, and the aging-time developments of the intensities are characterized by two regions. One of these time regions exhibits large deviation and deformation of the aging-time behavior. The deformation is observed at the region of the first few hundred hours of aging for 8 and 10YSZ. The time region with deformation coincides with that of the main decrease in conductivity. The other time region without deformation contains two types of mutually complementary behavior for 8YSZ or exhibits slow and smaller change in the intensities for 10YSZ.

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  • Received 10 September 2004

DOI:https://doi.org/10.1103/PhysRevB.71.064111

©2005 American Physical Society

Authors & Affiliations

Kan Hachiya* and Hideki Oku

  • Department of Fundamental Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan

Junya Kondoh

  • Department of Materials Science, The University of Shiga Prefecture, Hikone, Shiga 522-8533, Japan

  • *Electronic address: hachiya@energy.kyoto-u.ac.jp

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Issue

Vol. 71, Iss. 6 — 1 February 2005

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