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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47493

Title: CeO2 Optical Properties and Electrical Characteristics
Authors: Huey-Liang Hwangd
Wen-chieh Shih
Chun-Heng Chen
Fu-Chien Chiu
Chih-Ming Lai
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2010
Issue Date: 2018-07-26T07:59:14Z
Publisher: ECS Trans
Abstract: Abstract: The characterizations of optical dielectric function of the cerium dioxide (CeO2) were made by the spectroscopic ellipsometry (SE) technique using Kramers-Kronig relation and Tauc-Lorentz (TL) dispersion model. The results showed that the bandgap energy and refractive index of the CeO2 are about 3.32 eV and 2.18, respec-tively. According to the optical properties, the current conduction mechanisms in CeO2 thin films are Poole-Frenkel emission in high electric fields (> 2.36 MV/cm) at 450-500 K and Schottky emis-sion in medium electric fields (0.5-1.6 MV/cm) at 350-500 K. Consequently, the trap energy level and the Al/CeO2 barrier height are determined to be about 1.57{plus minus}0.01 eV and 0.63{plus minus}0.01 eV, re-spectively.
Relation: 28(2) pp.435-442
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47493
Appears in Collections:[光電科學研究所] 演講及研討會

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