Photochromic Ag-TiO2 thin films fabricated by dual-target helicon magnetron sputtering

L. Miao, T. Jiang, S. Tanemura, M. Tanemura, M. Mori, S. Toh, K. Kaneko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Photochromic material Ag-TiO2 thin films are fabricated on quartz substrate by dual -target helicon magnetron sputtering. The phototchromic behavior is investigated for the sample loaded with 90% Ag. Spheres, ellipsoids and polyhedra shape of Ag particles with wide range size (5∼100 nm) are dispersed in the TiO2 amorphous matrix observed by transmission electron microscopy. The spectral hole burned by the irradiation of laser at the wavelength 532 nm can be explained by a particle-plasmon-assisted electron transfer from Ag nanoparticles to TiO2 and subsequent trapping by adsorbed molecular oxygen. Moreover, the mechanism of the slow recovery after photochromism is suggested as a slow thermal release of electrons from oxygen trapping centers and subsequent capture into the Ag nanoparticles.

Original languageEnglish
Title of host publicationAICAM 2005 - Proceedings of the Asian International Conference on Advanced Materials
PublisherTrans Tech Publications
Pages167-170
Number of pages4
ISBN (Print)0878499792, 9780878499793
Publication statusPublished - 2006
Externally publishedYes
EventAICAM 2005 - Asian International Conference on Advanced Materials - Beijing, China
Duration: 2005 Nov 32005 Nov 5

Publication series

NameAdvanced Materials Research
Volume11-12
ISSN (Print)1022-6680

Conference

ConferenceAICAM 2005 - Asian International Conference on Advanced Materials
CountryChina
CityBeijing
Period05/11/305/11/5

Keywords

  • Ag-TiO thin films
  • Nanoparticle-plasmon resonance
  • Photochromism
  • RF helicon magnetron sputtering

ASJC Scopus subject areas

  • Engineering(all)

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