Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/404
Title: Tuning the emission bands of nanophosphors through the refractive index of the medium
Authors: Bhat, S Venkataprasad
Govindaraj, A
Rao, C N R
Keywords: Optical-Properties
Cdse Nanocrystals
Quantum Dots
Matrix
Issue Date: 10-May-2006
Publisher: Elsevier Science BV
Citation: Chemical Physics Letters 422(4-6) , 323–327 (2006)
Abstract: Photoluminescence spectra of nanophosphors including the yellow phosphor YAG:Ce as well as the green and red phosphors based on CdSe nanoparticles have been studied in the media of oxide gels and polymers of different refractive indices. The oxide gels employed are of silica, zirconia and their solid solutions with the refractive index, n, varying between 1.46 and 2. Different polymers afforded the variation of refractive index in the range 1.35-1.58. The wavelength corresponding to emission maxima of the phosphors are found to shift to lower wavelengths with increase in the refractive index of the medium. The shifts in the various media are found to be proportional to the refractive index term, n(2) - 1/2n(2) + 1. The sensitivity of the emission maxima of the nanophosphors to the medium refractive index may be useful for practical applications such as solid-state lighting. (c) 2006 Elsevier B.V. All rights reserved.
Description: Restricted Access
URI: http://hdl.handle.net/10572/404
Other Identifiers: 0009-2614
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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