TY - JOUR
T1 - Synthesis of Au nanoparticle-incorporated mesoporous TiO2 composite thin films and their electrical properties
AU - Hong, Min Hee
AU - Park, Chang Sun
AU - Park, Hyung Ho
N1 - Publisher Copyright:
© 2014 The Ceramic Society of Japan.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - Mesoporous TiO2 thin films containing Au nanoparticles were synthesized via solgel and evaporation-induced self-assembly processes. In this work, the effect of surfactant concentration on the pore structure of mesoporous TiO2 thin films was investigated and Au nanoparticles were introduced to enhance the electrical conductivity of mesoporous TiO2 without collapse of the pore structure. Pore structure was analyzed with small angle X-ray diffraction and grazing incidence small angle X-ray scattering. Crystallization of TiO2 was analyzed with wide angle X-ray diffraction. Increased surfactant concentration led to a corresponding increase in the porosity of mesoporous TiO2 thin films, but pore ordering in the mesoporous structure was still enhanced. The increasing rate of electrical resistivity associated with increased porosity was reduced in response to decreases in the electron scattering probability, which are strongly dependent on the pore ordering of mesoporous structures. Furthermore, the electrical conductivity of mesoporous TiO2 composite thin films was enhanced by the incorporation of Au nanoparticles due to the surface plasmon effect of Au nanoparticles.
AB - Mesoporous TiO2 thin films containing Au nanoparticles were synthesized via solgel and evaporation-induced self-assembly processes. In this work, the effect of surfactant concentration on the pore structure of mesoporous TiO2 thin films was investigated and Au nanoparticles were introduced to enhance the electrical conductivity of mesoporous TiO2 without collapse of the pore structure. Pore structure was analyzed with small angle X-ray diffraction and grazing incidence small angle X-ray scattering. Crystallization of TiO2 was analyzed with wide angle X-ray diffraction. Increased surfactant concentration led to a corresponding increase in the porosity of mesoporous TiO2 thin films, but pore ordering in the mesoporous structure was still enhanced. The increasing rate of electrical resistivity associated with increased porosity was reduced in response to decreases in the electron scattering probability, which are strongly dependent on the pore ordering of mesoporous structures. Furthermore, the electrical conductivity of mesoporous TiO2 composite thin films was enhanced by the incorporation of Au nanoparticles due to the surface plasmon effect of Au nanoparticles.
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U2 - 10.2109/jcersj2.122.959
DO - 10.2109/jcersj2.122.959
M3 - Article
AN - SCOPUS:84911423402
VL - 122
SP - 959
EP - 962
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1431
ER -