Development of phosphors for optoelectronics Photoluminescent Liquid Crystal Display Devices

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ISSN: 2349-6002 ESTD Year: 2014

UGC approved journal no 47859

Development of phosphors for optoelectronics Photoluminescent Liquid Crystal Display Devices
Author(s):
J. G. Mahakhode
Keywords:
Phot luminescent Liquid Crystal Display
Abstract
The main ingredient in Photoluminescent Liquid Crystal Display (PLLCD) is near UV excited phosphor for illumination. It is the need of PLLCD device to develop a phosphors that can absorbs excitation energy in the near UV region. To meet these requirement of PLLCD device , synthesis and photoluminescence characteristics of CaSO4:Eu2+ , Sr5(PO4)3Cl:Eu2+, (Ba, Sr) SiO4:Eu2+, (Y,Bi)2O3:Eu3+ is reported here. CaSO4:Eu2+ emits radiation in the near UV region at 388nm. This near UV energy is absorbed by (1) Sr5(PO4)3Cl:Eu2+ to emit blue radiation at 446 nm .( 2 ) (Ba, Sr) SiO4:Eu2+ to emit green light at 537nm and ( 3) (Y,Bi)2O3:Eu3+ to give red light emission at 611 nm. It found that these phosphors are promising RGB (Red,Green, Blue) emitters for fabrication of PLLCD device.
Article Details
Unique Paper ID: 151979 Publication Volume & Issue: Volume 8, Issue 2 Page(s): 165 - 169
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