Surface plasmonic resonances and enhanced IR spectra in GZO nano-triangle arrays

Ga-doped zinc oxide (GZO) nano-triangle arrays with different doping concentration and sizes were fabricated by nanosphere lithography (NSL) and pulsed laser deposition (PLD) techniques, using GZO targets and polystyrene (PS) spheres. The influences of doping concentration on band gap and optical pr...

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Bibliographic Details
Published in:Materials letters 2016-06, Vol.172, p.36-39
Main Authors: Habeeb, Ammar Ayesh, Long, Hua, Bao, Lijiao, Wang, Kai, Wang, Bing, Lu, Peixiang
Format: Article
Language:English
Subjects:
Arrays
Doping
Fourier transforms
FTIR
GZO
Infrared spectroscopy
Nanoparticle
Nanostructure
Polymethyl methacrylates
Polystyrene resins
Spectra
Surface enhanced infrared spectroscopy
Surface plasmon
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Summary:Ga-doped zinc oxide (GZO) nano-triangle arrays with different doping concentration and sizes were fabricated by nanosphere lithography (NSL) and pulsed laser deposition (PLD) techniques, using GZO targets and polystyrene (PS) spheres. The influences of doping concentration on band gap and optical properties were investigated using ultraviolet-visible spectra and Fourier transform infrared (FTIR) spectra. The surface plasmonic resonance (SPR) peaks of the GZO nano-triangle arrays could be tuned in infrared region by changing the doping concentration. The surface-enhanced infrared spectroscopy (SEIRS) experiments of polymethyl methacrylate (PMMA) films on GZO nano-triangle arrays indicated that the absorption peaks of the PMMA overlapped with the SPR peaks of GZO nano-triangle arrays (on-resonance) could be enhanced. However, the off-resonance peaks of the PMMA could not be enhanced. •GZO nano-triangle arrays were fabricated by NSL and PLD techniques.•The SPR peaks of GZO arrays were tuned by changing doping concentration.•Absorption peaks of PMMA were enhanced by GZO nano-triangle arrays.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2016.02.070