发光学报2017，Vol.38Issue(10)：1295-1301,7.DOI:10.3788/fgxb20173810.1295
CaxSi合金前驱物常压氮化制备Ca1-xAlSiN3:xEu2+红色荧光粉及发光性能研究
Preparation and Luminescence Properties of Ca1-x AlSiN3:xEu2+ Red Phosphors by Atmospheric Nitriding Method with Ca x Si Alloy Precursors
摘要
Abstract
CaAlSiN3:Eu2+ red phosphors were synthesized through nitrating process under atmos-pheric pressure with CaxSi alloy as precursor and EuB6 powder as activator. The influences of differ-ent sintering temperature, fluxing agent and secondary sintering on the characteristics of morphology,crystalline structure, luminescent properties and thermal stability of CaAlSiN3:Eu2+ red phosphors were investigated by scanning electron microscopy ( SEM ) , X-ray diffraction ( XRD ) and fluores-cence spectrophotometer. It displays that the nitride synthetic has CaAlSiN3 structure with space group Cmc21 , and its optimum sintering temperature is 1550 ℃. The performance of its luminous intensity was significantly enhanced when the mass fraction of SrF2 flux was 6%. In the secondary sintering, the relative intensity of emission spectrum was nearly doubled, the grain size was opti-mized, and the relative intensity of the emission spectrum was also improved. Appling Ca0. 98 AlSiN3:0. 02Eu2+ red phosphor with 640 nm emission wavelength in white LED packaging, the devices with high color rendering index of 92 . 5 and 95 . 8 , corresponding color temperature of 3109 K and 4989 K were obtained, respectively. The results indicate that the white LED emitting devices with high rendering index of positive white and warm white can be achieved by applying nitride synthetic.关键词
合金前驱物/氮化物/CaAlSiN3:Eu2+红色荧光粉/EuB6掺杂Key words
alloy precursors/nitride/CaAlSiN3:Eu2+ red phosphor/EuB6-doped分类
数理科学引用本文复制引用
刘文全,特古斯,史瑞新,段如霞,呼格吉勒,武文杰,朝克夫,包富泉,李琪,辛易..CaxSi合金前驱物常压氮化制备Ca1-xAlSiN3:xEu2+红色荧光粉及发光性能研究[J].发光学报,2017,38(10):1295-1301,7.基金项目
国家自然科学基金(51262022) （51262022）
内蒙古自治区科技计划(2015 年度) （2015 年度）
内蒙古自治区科技创新引导奖励基金(2016 年度)资助项目Supported by National Natural Science Foundation of China (51262022) （2016 年度）
Science and Technology Program of Inner Mongolia Au-tonomous Region ( 2015 ) （ 2015 ）
Science and Technology Innovation Guidance Award Fund of Inner Mongolia Autonomous Region (2016) （2016）
