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WET CHEMICAL PREPARATION AND PHOTOLUMINESCENCE IN Cs2MCl4:Eu2+ (M = Ba, Ca) PHOSPHOR FOR pcLED APPLICATION
C.D. Mungmode , M. M. Bhave , B.V. Tupte , D.H. Gahane , S.V. Moharil

Published in: International Journal of Current Engineering And Scientific Research ( IJCESR)
Volume- 5, Issue-1, pp.44-46, Jan 2018
DPI :-> 16.10046.IJCESR.2018.V5I1.4446.2313



Abstract
A simple wet chemical synthesis of Cs2MCl4:Eu2+ (M = Ba, Ca) phosphors is described. Photoluminescence characterization of prepared phosphors is carried out. Intense blue emission for Cs2(Ba0.99Eu0.01)Cl4 phosphor is observed peaking at 443 nm when excited by nUV light, whereas, maximum PL intensity is observed for Cs2(Ca0.995Eu0.005)Cl4 phosphor annealed at 875 K centered around 446 nm upon excited by 365 nUV radiations. Emission spectra is attributed to dipole allowed 4f6 5d1 ? 4f7 transition of Eu2+ dopant ion present in halide crystal. Both the phosphors can be efficiently excited by near Ultra Violet (nUV) radiations. Therefore, these phosphors may be used for pcLED application.

Key-Words / Index Term
Eu2+, phosphor, LED, photoluminescence

How to cite this article
C.D. Mungmode , M. M. Bhave , B.V. Tupte , D.H. Gahane , S.V. Moharil , “WET CHEMICAL PREPARATION AND PHOTOLUMINESCENCE IN Cs2MCl4:Eu2+ (M = Ba, Ca) PHOSPHOR FOR pcLED APPLICATION”, International Journal of Current Engineering And Scientific Research ( IJCESR), 5, Issue-1, pp.44-46, Jan 2018. DPI:16.10046.IJCESR.V5.I1.2313