Liang Zibo, Yang Zhaofeng, Xie Xiaoling, Pu Haiqi, Shi Dongxin, Zhou Qiang, Wang Zhengliang, Guo Junming, Wu Mingmei
Key Laboratory of Green-chemistry Materials in University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P. R. China.
MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
Dalton Trans. 2019 Sep 7;48(33):12459-12465. doi: 10.1039/c9dt02577d. Epub 2019 Jul 29.
In this work, a novel fluoroaluminate red phosphor of CsNaAlF:Mn with excellent color purity was fabricated via the introduction of Mn in the octahedral center. The crystal and electronic structures, luminescence properties and optical performances were characterized and investigated in detail. The evidences showed that CsNaAlF:Mn well-crystallized into a single phase with particulate morphology, and the non-equivalent occupation in CsNaAlF resulted in sharp red emissions with improved color purity upon blue light illumination. For solid-state lighting, the optical parameters consisted of the "blue-yellow-red" contributions significantly improved to a high color-rendering index of 88.7 and a low color temperature of 3856 K, indicating the potential use of CsNaAlF:Mn for warm white light-emitting diode applications.
