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Preparation and Luminescence of Europium Doped Zinc Silicate Phosphor

Published online by Cambridge University Press:  10 February 2011

H. X. Zhang ,
Y. Zhou ,
C. H. Kam ,
Y. L. Lam  and
Y. C. Chan
H. X. Zhang
Affiliation:
Photonics Research Group, Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, [email protected]
Y. Zhou
Affiliation:
Photonics Research Group, Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, [email protected]
C. H. Kam
Affiliation:
Photonics Research Group, Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, [email protected]
Y. L. Lam
Affiliation:
Photonics Research Group, Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, [email protected]
Y. C. Chan
Affiliation:
Photonics Research Group, Microelectronics Division, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, [email protected]
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Abstract

Europium doped zinc silicate (Eu:Zn2SiO4) phosphors in the forms of nanoscale powder and film has been prepared by sol-gel method. XRD analysis indicz: ed that the powders have willemite structure with a small amount of triclinic structure and the filn has, pure willemite structure. Photoluminescence measurement showed that strong red emission of Eu3+5D0→7 F2transition could be obtained under excitation at both 256 and 393 nm. Luminescence decay of the emission under 393 nm excitation can be fitted by a single exponential, yielding a decay time τ =1.43 ms; and the luminescence under 256 nm excitation shows double exponential decay with a slow decay time τs,=2.13 ms and a fast decay time τf =2.05 ms.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 560: Symposium E – Luminescent Materials , 1999 , 9
Copyright
Copyright © Materials Research Society 1999

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References

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