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Tunable white light emission from a single-host phosphor Gd2MoO6:Eu3+,Dy3+ for near ultraviolet light-emitting diodes

Published online by Cambridge University Press:  13 December 2016

Fuqiang Sun ,
Rongrong Xie ,
Li Guan  and
Canyuan Zhang
Fuqiang Sun*
Affiliation:
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
Rongrong Xie
Affiliation:
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
Li Guan
Affiliation:
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
Canyuan Zhang
Affiliation:
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

A series of Eu3+ and Dy3+ singly and doubly doped Gd2MoO6 phosphors were synthesized with solid state reactions. The X-ray powder diffraction analysis of phosphors shows that substitution of Eu3+ and Dy3+ does not change the host structure of phosphors. The absorption spectra measurements show that un-doped Gd2MoO6 can absorb near ultraviolet light without any visible light emission. However, energy absorbed by Gd2MoO6 can be effectively transferred to doped Eu3+ and Dy3+ and makes them emit blue, yellow, and red light, respectively. White light can be obtained by combining blue, yellow, and red emission. The doping of Dy3+ plays a major role for the formation of white light. The introduction of Eu3+ can remarkably decrease the color temperature of the white light emission. The measurement of the temperature-dependent luminescent properties indicates that the phosphors present a good thermal stability. Our investigation indicates that Gd2MoO6:Eu3+,Dy3+ is a potential candidate for white light emitting diodes applications. It also provides a new sight for the achievement of white light emission.

Keywords

Gd2MoO6white light emissionnear ultraviolet light-emitting diodesco-doping
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 3 , 14 February 2017 , pp. 539 - 546
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Copyright
Copyright © Materials Research Society 2016 

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Footnotes

Contributing Editor: Winston V. Schoenfeld

References

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