Aluminate red phosphor in light-emitting diodes: theoretical calculations, charge varieties, and high-pressure auminescence analysis

Niumiao Zhang , Tsai Yi-Ting , Mu-Huai Fang , Chong-Geng Ma , Agata Lazarowska , Sebastian Mahlik , Marek Grinberg , Chang-Yang Chiang , Zhou Wuzong , Jauyn Grace Lin , Jyh-Fu Lee , Jiming Zheng , Chongfeng Guo , Ru-Shi Liu


Searching for a non-rare-earth-based oxide red-emitting phosphor is crucial for phosphor-converted light-emitting diodes (LEDs). In this study, we optimized a blue and UV-light excited Sr4Al14O25:Mn phosphor exhibiting red emission peaked at 653 nm, which was successfully synthesized by solid-state reaction. The crystal structure, micromorphology, and luminescent properties of Sr4Al14O25:Mn phosphors were characterized by X-ray Rietveld refinement, high-resolution transmission electron microscopy, and photoluminescence spectra. The band gap and electronic structure of Sr4Al14O25 were analyzed by density functional theory calculations using the hybrid exchange-correlation functional. The crystal field environment effect of Al sites from introducing activator Mn ions was investigated with the aid of Raman 27Al nuclear magnetic resonance spectra and electron spin resonance. The pressure dependent luminescent properties and decay time of this compound were presented. The tricolor display spectrum by combining blue InGaN chips, commercial beta-SiAlON:Eu2+ green phosphor, and Sr4Al14O25:Mn red phosphor were evaluated for commercial applications: using the present Sr4Al14O25:Mn red phosphor converted LED as a backlighting source.
Author Niumiao Zhang
Niumiao Zhang,,
, Tsai Yi-Ting
Tsai Yi-Ting,,
, Mu-Huai Fang
Mu-Huai Fang,,
, Chong-Geng Ma
Chong-Geng Ma,,
, Agata Lazarowska IFD
Agata Lazarowska,,
- Institute of Experimental Physics
, Sebastian Mahlik IFD
Sebastian Mahlik,,
- Institute of Experimental Physics
, Marek Grinberg IFD
Marek Grinberg,,
- Institute of Experimental Physics
, Chang-Yang Chiang
Chang-Yang Chiang,,
, Zhou Wuzong
Zhou Wuzong,,
, Jauyn Grace Lin
Jauyn Grace Lin,,
et al.
Other language title versions
Journal seriesACS Applied Materials & Interfaces, ISSN 1944-8244
Issue year2017
Publication size in sheets0.5
Keywords in Englishtheoretical calculations, charge varieties, high-pressure luminescence, Sr4Al14O25, red phosphor, LEDs
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 7.504 (2) - 2016=7.823 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.