Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Feature: Ceramics Processing through Energy Consumption Reduction (Green Processing): Papers
Modification of electrical properties of TiO2 by continuous-wave ytterbium fiber laser irradiation
Hiroyasu KIDOMasanari TAKAHASHIJun-ichi TANIMasaya CHIGANENobuyuki ABEMasahiro TSUKAMOTO
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2014 Volume 122 Issue 1421 Pages 21-24

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Abstract
Polycrystalline plate-like TiO2 specimens were irradiated with a continuous-wave Yb-fiber laser, and the electrical properties of the modified layers were investigated. The irradiated part was modified in color and electrical properties when the laser power was set above a certain threshold. The color changed from white to black, and the electrical resistivity drastically decreased from an initial value of 3.3 × 109 Ω cm to 1.9 Ω cm at 2.0 W. The Hall measurement showed that the modified layer was an n-type semiconductor, and the carrier concentration was 3.6 × 1017 cm−3 at 2.0 W.
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© 2014 The Ceramic Society of Japan
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