Unknown

Dataset Information

0

A single Eu2+-activated high-color-rendering oxychloride white-light phosphor for white-light-emitting diodes.


ABSTRACT: Single-phased, high-color-rendering index (CRI) white-light phosphors are emerging as potential phosphor-converted white-light-emitting diodes (WLEDs) and as an alternative to blends of tricolor phosphors. However, it is a challenge to create a high CRI white light from a single-doped activator. Here, we present a high CRI (Ra = 91) white-light phosphor, Sr5(PO4)3-x(BO3)xCl:Eu2+, composed of Sr5(PO4)3Cl as the beginning member and Sr5(BO3)3Cl as the end member. This work utilized the solid-solution method, and tunable Eu2+ emission was achieved. Color-tunable Eu2+ emissions in response to structural variation were observed in Sr5(PO4)3-x(BO3)xCl solid solutions. This was further confirmed using X-ray Rietveld refinement, electron paramagnetic resonance spectroscopy, and in the photoluminescence spectra. The color-tunable emissions included the white light that originated from the combination of the blue emission of Sr5(PO4)3Cl:Eu2+ and an induced Eu2+ yellow emission at approximately 550 nm in the solid solution. Importantly, the white-light phosphors showed a greater R9 = 90.2 under excitation at 365 nm. This result has rarely been reported in the literature and is greater than that of (R9 = 14.3) commercial Y3Al5O12:Ce3+-based WLEDs. These findings demonstrate the great potential of Sr5(PO4)3-x(BO3)xCl:0.04Eu2+ as a white-light phosphor for near-UV phosphor-converted WLEDs. These results also provide a shortcut for developing a high CRI white-light phosphor from a single Eu2+-doped compound.

SUBMITTER: Dai PP 

PROVIDER: S-EPMC6062429 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

altmetric image

Publications

A single Eu<sup>2+</sup>-activated high-color-rendering oxychloride white-light phosphor for white-light-emitting diodes.

Dai Peng-Peng PP   Li Cong C   Zhang Xin-Tong XT   Xu Jun J   Chen Xi X   Wang Xiu-Li XL   Jia Yan Y   Wang Xiaojun X   Liu Yi-Chun YC  

Light, science & applications 20160212 2


Single-phased, high-color-rendering index (CRI) white-light phosphors are emerging as potential phosphor-converted white-light-emitting diodes (WLEDs) and as an alternative to blends of tricolor phosphors. However, it is a challenge to create a high CRI white light from a single-doped activator. Here, we present a high CRI (Ra = 91) white-light phosphor, Sr<sub>5</sub>(PO<sub>4</sub>)<sub>3-x</sub>(BO<sub>3</sub>)<sub>x</sub>Cl:Eu<sup>2+</sup>, composed of Sr<sub>5</sub>(PO<sub>4</sub>)<sub>3</s  ...[more]

Similar Datasets

| S-EPMC9418951 | biostudies-literature
| S-EPMC6649047 | biostudies-literature
| S-EPMC9062395 | biostudies-literature
| S-EPMC11321674 | biostudies-literature
| S-EPMC5506905 | biostudies-other
| S-EPMC6645075 | biostudies-literature
| S-EPMC6868216 | biostudies-literature
| S-EPMC5037423 | biostudies-literature
| S-EPMC6062427 | biostudies-literature
| S-EPMC8172867 | biostudies-literature