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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Journal of Materials...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Journal of Materials Chemistry C
Article . 2021 . Peer-reviewed
License: Royal Society of Chemistry Licence to Publish
Data sources: Crossref
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Highly efficient and thermally robust cyan-green phosphor-in-glass films for high-brightness laser lighting

Authors: Hua-Jun Wu; Guohui Pan; Zhendong Hao; Liangliang Zhang; Hao Wu; Jiahua Zhang;

Highly efficient and thermally robust cyan-green phosphor-in-glass films for high-brightness laser lighting

Abstract

Laser-driven white lighting has drawn great attention due to its high-brightness, high efficiency and compact size. However, the current laser lighting usually suffers from a low color rendering (Ra ∼ 60) due to the presence of a wide “Cyan cavity” (460–530 nm) in the luminescence spectrum. Herein, we report on the preparation and characterization of a novel cyan-green color converter, namely Ca3Sc2Si3O12:Ce3+,Na+ phosphor-in-glass (CSS-PiG) film. The addition of Na+ as a charge compensator greatly improved the internal quantum efficiency (IQE) of CSS:Ce3+ phosphors. Because of the good chemical stability and the matching refractive index between the glass matrix and embedded phosphors, the as-prepared CSS-PiG film exhibits an efficient cyan-green emission (with a peak at 508 nm and IQE ∼91%) and excellent thermal stability (maintaining 75% of the room-temperature emission intensity at 300 °C). Under the excitation of a 14.5 W mm−2 blue laser, the PiG film could produce a high-brightness white light with a forward luminous flux of 701 lm, a forward luminous efficacy of 112 lm W−1 and a Ra of 61. By coating a red-emitting CaAlSiN3:Eu2+ layer on the CSS-PiG film, the composite CSS-PiG/CaAlSiN3 film shows an ultra-broadband emission with a full-width at half maximum (FWHM) of 196 nm, which remarkably narrows the “Cyan cavity” and thus provides a Ra above 90. These results demonstrate that the CSS-PiG film is a promising candidate for laser lighting.

Related Organizations
Subjects by Vocabulary

Microsoft Academic Graph classification: Blue laser Materials science business.industry Cyan Phosphor Laser law.invention Luminous flux Color rendering index law Optoelectronics Quantum efficiency business Luminous efficacy

Keywords

General Chemistry, Materials Chemistry

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  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    7
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Top 10%
Average
Top 10%