Phosphors and preparation method thereof as well as white led
AssigneesFuzhou Boe Optoelectronics Technology Co., Ltd., Boe Technology Group Co., Ltd.
InventorsShaojun SUN, Yajiao ZHANG, Guiguang HU, Junxiang LU, Yanfei CHI, Xia CHEN
Life of this patent
Estimating the term…
Abstract
Disclosed are a phosphors, a preparation method thereof and a white LED. The phosphors with a chemical formula being α-Ba3Y1-x(BO3)3:xDy3+ is obtained by doping Dy3+ and is a single-matrix phosphors which can be excited by near-ultraviolet light to emit white light.
Claims12
A phosphors, wherein a chemical formula of the phosphors is α-Ba3Y1-x(BO3)3:xDy3+, wherein x represents a mole percent of Dy3+ in the phosphors, and x is greater than 0 and smaller than or equal to 0.2.
A preparation method of phosphors, comprising:
- respectively weighing solid compounds corresponding to elements in a chemical formula α-Ba3Y1-x(BO3)3:xDy3+ of the phosphors as raw materials according to a molar ratio of Ba to Y to B to Dy being 3:1-x:3:x, wherein x represents the mole percent of Dy3+ in the phosphors, and x is greater than 0 and smaller than or equal to 0.2;
- grinding and uniformly mixing weighed raw materials to obtain a raw material mixture;
- pre-calcining the raw material mixture at a first preset temperature for first preset time, and naturally cooling the pre-calcined mixture to room temperature to obtain a pre-calcined product;
- grinding obtained pre-calcined product, calcining ground pre-calcined product at a second preset temperature for second preset time, and naturally cooling calcined ground pre-calcined product to room temperature to obtain a calcined product;
- and
- grinding obtained calcined product to obtain the phosphors.
Dependencies are inferred from the claim text.