Luminescence properties of novel Eu3+-doped tantalate NaCaTiTaO6 red-emitting phosphors for solid-state lighting |
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| Authors: | Pengfei Sun Yifan Zhong Zixiu Li Bitao Liu Tianbao Li Bin Deng Ruijin Yu |
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| Affiliation: | 1. College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, PR China;2. Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, PR China;3. College of Chemical Biological and Environmental Engineering, Xiangnan University, Chenzhou, Hunan, PR China |
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| Abstract: | A novel tantalate red-emitting phosphors NaCa1-xEuxTiTaO6 (x = 0.02-0.50) is synthesized via the traditional solid-state reaction sintering. The photoluminescence properties, X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermal stability are characterized in detail. Photoluminescence spectra show strong red emission monitored at 614 nm at λex = 395 nm. The spectral properties exhibit excellent color purity and chromaticity coordinate (CIE) characteristics. White light-emitting diodes (w-LEDs) device are fabricated by the prepared phosphors and show high quality of color-rendering index. The investigated results suggest that the Eu3+-doped NaCaTiTaO6 phosphors can be as potential substitute red phosphors for w-LEDs. |
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| Keywords: | luminescence NaCaTiTaO6:Eu3+ phosphors tantalate |
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