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Home / Journal of Nanoscience and Nanotechnology, Volume 18, Number 8

Synthesis and Luminescence Properties of a Novel Yellow–White Emitting NaLa(MoO4)2: Dy3+, Li+ Phosphor

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Intense yellow–white NaLa(MoO4)2: Dy3+ phosphors co-doped with Li+ ions have been successfully synthesized via facile sol–gel combustion approach. The dependence of the crystal structure and crystallinity, particle morphology, photoluminescence property, fluorescent lifetime and absolute quantum efficiency of the as-prepared phosphors has been investigated. Stable yellow–white emission from 440 nm to 600 nm and higher absolute quantum efficiency were studied on Dy3+ doped NaLa(MoO4)2, Dy3+ and Li+ co-doped NaLa(MoO4)2, respectively. Surprisingly, only a small amount of Li+ can lead to a remarkable increase of the PL intensity and the quantum efficiency. Especially, along with 0.75 mol% Li+ ions induced in the NaLa(MoO4)2: Dy3+ phosphors, the absolute quantum efficiency increased from 13.8% to 22%, and the possible mechanism has been deeply discussed. Outstanding luminescence properties have certified that NaLa(MoO4)2: Dy3+, Li+ phosphors are promising candidates as new yellow–white components for optical devices.

Keywords: Dy3+; Li+; NaLa(MoO4)2; Photoluminescence; Sol–Gel Combustion; Yellow–White Emitting Phosphors

Document Type: Research Article

Affiliations: 1: Shenzhen Research Institute of Shandong University, Shenzhen 518057, P. R. China 2: Center for Disease Prevention and Control of Jinan Military Command, Jinan 250014, P. R. China 3: School of Materials Science and Engineering, Qilu University of Technology, Jinan 250353, P. R. China

Publication date: 01 August 2018

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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