激活 Sm3+ 的 Ca2SiO4 红黄磷被准备由常规高温度固态在他们的水晶结构和光性质上做集中的钠(Na+) 和钐(Sm3+) 的反应方法,和效果离子被 X 光检查衍射(XRD ) 调查并且荧光灯 spectrofluorometer。当他们被锻烧在 1200 点对待时, XRD 模式证明井水晶的结构在黄磷形成
Sm3+-activated Ca2SiO4 red phosphors were prepared by the conventional high-temperature solid-state reaction method, and the effects of sodium (Na+) and samarium (Sm3+) ions doping concentrations on their crystal structure and luminescent properties were investigated by X-ray diffraction (XRD) and fluorescent spectrofluorometer. XRD patterns demonstrate that a well-crystalline structure forms in the phosphors when they are treated by calcination at 1200~C for 4 h, and the excitation spectra exhibit good absorption in the range between 350 and 420 nm. Under the irradiation of 405 nm near-ultraviolet (NUV) light, the spectra of the phosphors show a main emission peak at 601 nm attributed to the 4G5/2→6H7/2 transition of Sm3+ ions, and its intensity is greatly influenced by the concentrations of Sm3+ and Na2CO3. When the concentrations of Sm3+ ions and Na2CO3 are 2mol% and 6mol%, respectively, the optimal emission intensity can be obtained. From strong absorption in the near ultraviolet zone, the Na0.06Sm0.02Ca1.92SiO4 phosphor is a promising red-emitting phosphor for white light emitting diodes (W-LEDs).