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Dr. V P N Nampoori >
Please use this identifier to cite or link to this item:
http://purl.org/purl/1757
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| Title: | Luminescence tuning and enhanced nonlinear optical properties of nanocomposites of ZnO–TiO2 |
| Authors: | Nampoori, V P N
Litty, Irimpan
Bindu, Krishnan
Radhakrishnan, P |
| Keywords: | Nanocomposites
Fluorescence emission
Nonlinear absorption coefficient
Two photon absorption and nonlinear
refractive index |
| Issue Date: | 29-Apr-2008 |
| Publisher: | Elsevier Journal of Colloid and Interface Science |
| Citation: | Science Direct, Cochin University of Science and Technology |
| Abstract: | In this article we present the spectral and nonlinear optical properties of ZnO–TiO2 nanocomposites prepared
by colloidal chemical synthesis. Emission peaks of ZnO–TiO2 nanocomposites change from 340 nm
to 385 nm almost in proportion to changes in Eg. The nanocomposites show self-defocusing nonlinearity
and good nonlinear absorption behaviour. The nonlinear refractive index and the nonlinear absorption
increase with increasing TiO2 volume fraction at 532 nm and can be attributed to the enhancement of
exciton oscillator strength. ZnO–TiO2 is a potential nanocomposite material for the tunable light emission
and for the development of nonlinear optical devices with a relatively small limiting threshold |
| URI: | http://dyuthi.cusat.ac.in/purl/1757 |
| Appears in Collections: | Dr. V P N Nampoori
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