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Multicolor tuning and white light emission from lanthanide doped YPVO4 nanorods: energy transfer studies

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Title Multicolor tuning and white light emission from lanthanide doped YPVO4 nanorods: energy transfer studies
 
Creator SINGH, NS
SAHU, NK
BAHADUR, D
 
Subject SINGLE-WAVELENGTH EXCITATION
EMITTING-DIODES
PHOTOLUMINESCENCE PROPERTIES
SILICA NANOPARTICLES
CDSE NANOCRYSTALS
PARTICLE-SIZE
QUANTUM DOTS
EU3+
LUMINESCENCE
PHOSPHORS
 
Description Nanorods of YPxV1-xO4:Ln(3+) (Ln(3+) - Dy3+, Eu3+, Sm3+) have been synthesized hydrothermay. The substitution of vanadium (V5+) by phosphorous (P5+) ions in YVO4 was confirmed by X-ray diffraction studies and aka supported by Fourier transform infrared spectroscopy, transmission eLectron microscopy and photoLuminescence (PL) studies. The energy transfer (ET) rate to the activator can be controLLed either by activator concentration or by doping with P in the crystaL. The ET is reduced by P doping due to the increase in separation between vanadium ions. This has been estabLished from both steady state Luminescence and decay studies. The controLLed ET Leads to the Nue coLor emission from the vanadate (VO43-) transition in YPxV1-xO4 and generates a multicolored Light emission even with single doping of the activator. Further, the coLor of emission can aka be tuned by multiple doping of the activators. Interestingly, white Light is obtained by doping with Dy3+ (lat.%) and Sm3+ (0.75 at.%) in YP0.8V0.2O4. The quantum yield of white Light emission is found to be 25%. CIE chromaticity supports the tunability of the Light and the white Light emission.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-12-29T04:46:27Z
2014-12-29T04:46:27Z
2014
 
Type Article
 
Identifier JOURNAL OF MATERIALS CHEMISTRY C, 2(3)548-555
2050-7526
2050-7534
http://dx.doi.org/10.1039/c3tc31586j
http://dspace.library.iitb.ac.in/jspui/handle/100/17112
 
Language English