A novel red emitting phosphor of Eu3+ doped TTB-type niobate NaSr2Nb5O15 for white LEDs

作者：Zhu, Ge; Ci, Zhipeng; Ma, Chaoyang; Shi, Yurong; Wang, Yuhua^*

来源：Materials Research Bulletin, 2013, 48(5): 1995-1998.

DOI：10.1016/j.materresbull.2012.12.074

• Optical materials
• Optical properties
• Luminescence

Eu3+ doped NaSr2Nb5O15 series were firstly synthesized by solid-state reaction method. Crystal structure, characteristic luminescence properties as well as charge compensation mechanism are investigated detailedly by X-ray diffraction refinement and photoluminescence spectra measurement. NaSr2Nb5O15:Eu3+ exhibits strong absorption in near ultraviolet-blue region and intense red emission with CIE chromaticity coordinates (0.638, 0.355) after adding the charge compensation agent upon 398 nm excitation. The integral intensity of NSN:0.03Eu(3+), 0.03Li(+) is 64.5% of the commercial Y2O3:Eu3+ and the quantum efficiency is calculated to be 41.5%. The results show that NaSr2Nb5O15:Eu3+ can be a promising red-emitting phosphor for white LEDs. 0 2013 Elsevier Ltd.

• 出版日期2013-5
• 单位兰州大学