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Interfacial control on microstructure, morphology and optics of beta-AgI nanostructures fabricated on sputter-disordered Ag-Sn bilayers

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DOI: 10.4236/ns.2010.24044    5,180 Downloads   9,611 Views   Citations

ABSTRACT

We report for the first time a non-template based facile growth of hexagonal (β) AgI nanorods and nanoplates easily fabricated by rf magnetron sputtering on Ag/Sn bilayers upon controlled iodination. The structural and morphological evolution of the β-AgI nanostructures is cha-racterized by X-Ray Diffraction, Atomic Force Microscopy and optical spectroscopy. Sput-tering induced disorder in precursor Ag films, high external stress and high defect concentra-tions at the Sn-AgI interface particularly facili-tates the development of layered hexagonal structure of β-AgI nanostructures. Extremely sensitive room temperature optical absorbance involving evolution of W1,2 and W3 exciton tran-sitions and emission spectra involving phonon replica corroborate the formation of β-AgI na-nostructures with high defect concentrations, are aimed at improving the efficiency of photo-graphic process and looking at microelec-trodic and optoelectronic applications.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Mohan, D. and Sunandana, C. (2010) Interfacial control on microstructure, morphology and optics of beta-AgI nanostructures fabricated on sputter-disordered Ag-Sn bilayers. Natural Science, 2, 368-372. doi: 10.4236/ns.2010.24044.

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