Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 170, Issue -, Pages 32-37Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2015.12.015
Keywords
Optical materials; Heat treatment; Crystal structure; Luminescence
Categories
Funding
- National Natural Science Foundation of China [21261027]
- Natural Science Foundation of Yunnan Province [2014FB147]
- Graduate Innovation Foundation of Yunnan Minzu University [2015YJCXY277]
- Program for Innovative Research Team (in Science and Technology) in University of Yunnan Province [2011UY09]
- Yunnan Provincial Innovation Team [2011HC008]
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In this work, a series of BaSiF6:Mn4+ red phosphors were synthesized through a hydrothermal route. The crystal structure and morphology were characterized by powder X-ray diffraction (XRD) with Rietveld refinement, scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS) in detail. The influence of reaction conditions, including the concentration of KMnO4 and HF, reaction temperature and time, on the photoluminescence properties were investigated systematically. It can emit intense red light (similar to 636 nm) under blue light (similar to 458 nm) illumination. The white LED device based on YAG:Ce-BaSiF6:Mn4+ mixture shows warm white light with low color temperature and high correlated color index, which reveals its potential application in WLED. (C) 2015 Elsevier B.V. All rights reserved.
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