Domination of second-sphere shrinkage effect to improve photoluminescence of red nitride phosphors

Wan-Yu Huang; Fumitaka Yoshirnura; Kyota Ueda; Wei Kong Pang; Bing-Jian Su; Ling-Yun Jang; Chang-Yang Chiang; Wuzong Zhou; Nguyen Hoang Duy; Ru-Shi Liu

doi:10.1021/ic5017752

Domination of second-sphere shrinkage effect to improve photoluminescence of red nitride phosphors

Wan-Yu Huang
, Fumitaka Yoshirnura
, Kyota Ueda
, Wei Kong Pang
, Bing-Jian Su
, Ling-Yun Jang
, Chang-Yang Chiang
, Wuzong Zhou
, Nguyen Hoang Duy
, Ru-Shi Liu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Red Ca_0.99Al_{1–4δ/3–x}Si_1+δ+xN_3–xC_x:Eu²⁺_0.01 (δ = 0.345; x = 0–0.2) nitride phosphors exhibit a blue-shifted emission with increased eye sensitivity function and excellent thermal stability. The variations in the photoluminescence in the Ca_0.99Al_{1–4δ/3–x}Si_1+δ+xN_3–xC_x:Eu²⁺_0.01 (δ = 0.345; x = 0–0.2) system are thoroughly investigated. The enhanced emission energy and the improved thermal stability with increasing x are dominated by the second-sphere shrinkage effect via the substitution of small Si⁴⁺ for large Al³⁺ with simultaneous charge compensation. Related proofs of the second-sphere shrinkage effect control for photoluminescence are confirmed via high-resolution neutron powder diffraction, EXAFS, and ²⁹Si solid-state NMR techniques.

Original language	English
Pages (from-to)	12822-12831
Number of pages	10
Journal	Inorganic Chemistry
Volume	53
Issue number	24
Early online date	19 Nov 2014
DOIs	https://doi.org/10.1021/ic5017752
Publication status	Published - 15 Dec 2014

Keywords

Light-emitting-diodes
Color rendering index
Luminescence properties
White leds
Oxynitride
Lattice
SR

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@article{4876d389b6b6466d865b57ae9b3b3bc3,

title = "Domination of second-sphere shrinkage effect to improve photoluminescence of red nitride phosphors",

abstract = "Red Ca0.99Al1–4δ/3–xSi1+δ+xN3–xCx:Eu2+0.01 (δ = 0.345; x = 0–0.2) nitride phosphors exhibit a blue-shifted emission with increased eye sensitivity function and excellent thermal stability. The variations in the photoluminescence in the Ca0.99Al1–4δ/3–xSi1+δ+xN3–xCx:Eu2+0.01 (δ = 0.345; x = 0–0.2) system are thoroughly investigated. The enhanced emission energy and the improved thermal stability with increasing x are dominated by the second-sphere shrinkage effect via the substitution of small Si4+ for large Al3+ with simultaneous charge compensation. Related proofs of the second-sphere shrinkage effect control for photoluminescence are confirmed via high-resolution neutron powder diffraction, EXAFS, and 29Si solid-state NMR techniques.",

keywords = "Light-emitting-diodes, Color rendering index, Luminescence properties, White leds, Oxynitride, Lattice, SR",

author = "Wan-Yu Huang and Fumitaka Yoshirnura and Kyota Ueda and Pang, \{Wei Kong\} and Bing-Jian Su and Ling-Yun Jang and Chang-Yang Chiang and Wuzong Zhou and Duy, \{Nguyen Hoang\} and Ru-Shi Liu",

note = "This work is supported by the Ministry of Science and Technology of Taiwan (Contract No. MOST 101-2113-M-002-014-MY3) and Mitsubishi Chemical Group, Science and Technology Research Center, Inc.",

year = "2014",

month = dec,

day = "15",

doi = "10.1021/ic5017752",

language = "English",

volume = "53",

pages = "12822--12831",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society (ACS)",

number = "24",

}

TY - JOUR

T1 - Domination of second-sphere shrinkage effect to improve photoluminescence of red nitride phosphors

AU - Huang, Wan-Yu

AU - Yoshirnura, Fumitaka

AU - Ueda, Kyota

AU - Pang, Wei Kong

AU - Su, Bing-Jian

AU - Jang, Ling-Yun

AU - Chiang, Chang-Yang

AU - Zhou, Wuzong

AU - Duy, Nguyen Hoang

AU - Liu, Ru-Shi

N1 - This work is supported by the Ministry of Science and Technology of Taiwan (Contract No. MOST 101-2113-M-002-014-MY3) and Mitsubishi Chemical Group, Science and Technology Research Center, Inc.

PY - 2014/12/15

Y1 - 2014/12/15

N2 - Red Ca0.99Al1–4δ/3–xSi1+δ+xN3–xCx:Eu2+0.01 (δ = 0.345; x = 0–0.2) nitride phosphors exhibit a blue-shifted emission with increased eye sensitivity function and excellent thermal stability. The variations in the photoluminescence in the Ca0.99Al1–4δ/3–xSi1+δ+xN3–xCx:Eu2+0.01 (δ = 0.345; x = 0–0.2) system are thoroughly investigated. The enhanced emission energy and the improved thermal stability with increasing x are dominated by the second-sphere shrinkage effect via the substitution of small Si4+ for large Al3+ with simultaneous charge compensation. Related proofs of the second-sphere shrinkage effect control for photoluminescence are confirmed via high-resolution neutron powder diffraction, EXAFS, and 29Si solid-state NMR techniques.

AB - Red Ca0.99Al1–4δ/3–xSi1+δ+xN3–xCx:Eu2+0.01 (δ = 0.345; x = 0–0.2) nitride phosphors exhibit a blue-shifted emission with increased eye sensitivity function and excellent thermal stability. The variations in the photoluminescence in the Ca0.99Al1–4δ/3–xSi1+δ+xN3–xCx:Eu2+0.01 (δ = 0.345; x = 0–0.2) system are thoroughly investigated. The enhanced emission energy and the improved thermal stability with increasing x are dominated by the second-sphere shrinkage effect via the substitution of small Si4+ for large Al3+ with simultaneous charge compensation. Related proofs of the second-sphere shrinkage effect control for photoluminescence are confirmed via high-resolution neutron powder diffraction, EXAFS, and 29Si solid-state NMR techniques.

KW - Light-emitting-diodes

KW - Color rendering index

KW - Luminescence properties

KW - White leds

KW - Oxynitride

KW - Lattice

KW - SR

UR - http://pubs.acs.org/doi/suppl/10.1021/ic5017752

U2 - 10.1021/ic5017752

DO - 10.1021/ic5017752

M3 - Article

SN - 0020-1669

VL - 53

SP - 12822

EP - 12831

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 24

ER -

Domination of second-sphere shrinkage effect to improve photoluminescence of red nitride phosphors

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