Reversibly phototunable TiO{sub 2} photonic crystal modulated by Ag nanoparticles' oxidation/reduction

Journal Article · Mon Jan 10 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3543619· OSTI ID:21518247

Jian, Liu; Jinming, Zhou; Changqing, Ye ^[1]; Mingzhu, Li; Jingxia, Wang; Lei, Jiang; Yanlin, Song ^[1]

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1. Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

We report a reversibly phototunable photonic crystal system whose reflectance at the stop band position can be modulated by alternating UV/visible (UV/Vis) irradiation. The phototunable system consists of Ag nanoparticles and TiO{sub 2} photonic crystal. The stop bands intensity of Ag loaded TiO{sub 2} photonic crystals were found to be dependent on the redox states of Ag nanoparticles. The quasi 'on' and 'off' states of the stop band were reversibly modulated by the Ag nanoparticles' oxidation/reduction through alternating UV/Vis light irradiation.

• OSTI ID: 21518247
• Journal Information: Applied Physics Letters, Vol. 98, Issue 2; Other Information: DOI: 10.1063/1.3543619; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CRYSTALS
IRRADIATION
NANOSTRUCTURES
OXIDATION
PARTICLES
REDUCTION
SILVER
TITANIUM OXIDES
ULTRAVIOLET RADIATION
CHALCOGENIDES
CHEMICAL REACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
METALS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS