蓝光激发余辉型荧光粉的研究进展<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.021.006

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Abstract As it is energy savings, environmental friendliness and fast switching, white light-emitting diode (w-LED) has become the new generation of lighting sources. It is commonly used that applying blue LED chip to excite the yellow YAG∶Ce³⁺ phosphor to synthesis white light. However, adding the DC (direct current)/AC (alternating current) conversion and heat-dissipation radiators makes the w-LED too expensive, which restricts the further development of w-LED seriously. AC-LED, a LED device driven by city power, is the inevitable direction of LED development. Furthermore, it is possible that applying afterglow phosphors in AC-LED. This paper provides a review of the persistence phosphors motivated by blue light in AC-LED, and the length of afterglow time is calculated. What’s more, the afterglow intensity and the decay rates are analyzed at the same time. The results of the paper showed that the afterglow decay time of phosphors is T_x(6.67 ms≤T_x≤10 ms), and the minimum value of afterglow intensity is greater than 0.032 mcd/m². Meanwhile, the decay rate of afterglow satisfied the forum (1) in the text, and the afterglow is occurred at T/2—2T/3,which is the most beneficial to eliminate flicker effect.

Key words： phosphors afterglow blue-light activated AC-LED flicker effect

Published: 08 May 2018

CLC number:

O614

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	Articles by authors
	CHEN Bida
	GAN Guisheng
	WU Yiping
	OU Yanjie

Cite this article:

CHEN Bida,GAN Guisheng,WU Yiping, et al. Advances in Persistence Phosphors Activated by Blue-light[J]. Materials Reports, 2017, 31(21): 37-45.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.021.006 OR http://www.mater-rep.com/EN/Y2017/V31/I21/37

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