Abstract:
본 발명은 하기 화학식 1의 화합물로 표시되는 실리케이트 형광체를 제공한다.
Li ax A x Sr byzl B y Eu z C l Si cm D m O dn E n 상기 식에서, A는 Na 1 + , K 1 + , Rb 1 + , 및 Cs 1 + 로 이루어진 군으로부터 선택된 하나 이상이고, B는 Mg 2 + , Ca 2 + , Ba 2 + 및 Zn 2 + 로 이루어진 군으로부터 선택된 하나 이상이고, C는 Sc 3 + , Y 3 + , La 3 + , Gd 3 + , Ce 3 + , Pr 3 + , Nd 3 + , Sm 3 + , Tb 3 + , Dy 3 + , Ho 3 + , Er 3 + , Tm 3 + , Yb 3+ , Lu 3 + 및 Bi 3 + 로 이루어진 군으로부터 선택된 하나 이상이고, D는 B 3+ , Al 3 + , Ga 3+ , In 3 + 및 Tl 3 + 로 이루어진 군으로부터 선택된 하나 이상이고, E는 F - , Cl - , Br - , 및 I - 로 이루어진 군으로부터 선택된 하나 이상이고, 1.5≤a≤2.5, 1.5≤b≤2.5, 1.5≤c≤2.5, 3≤d≤5, 0≤x
Abstract:
An oxy nitride phosphor is provided to realize excellent red useful for a UV-LED and blue-LED type white light emitting diode, and to ensure excellent efficiency, low sensitivity to moisture in the air and durability against heat. An oxy nitride phosphor is a compound indicated as the chemical formula 1: [{M_(1-x)Eu_x}_aSi_bO_cN_d]. In the chemical formula 1, M is the alkaline earth metal, 0
Abstract:
본 발명은 하기 화학식 1의 화합물로 표시되는 실리케이트 형광체를 제공한다.
Li ax A x Sr byzl B y Eu z C l Si cm D m O dn E n 상기 식에서, A는 Na 1+ , K 1+ , Rb 1+ , 및 Cs 1+ 로 이루어진 군으로부터 선택된 하나 이상이고, B는 Mg 2+ , Ca 2+ , Ba 2+ 및 Zn 2+ 로 이루어진 군으로부터 선택된 하나 이상이고, C는 Sc 3+ , Y 3+ , La 3+ , Gd 3+ , Ce 3+ , Pr 3+ , Nd 3+ , Sm 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , Yb 3+ , Lu 3+ 및 Bi 3+ 로 이루어진 군으로부터 선택된 하나 이상이고, D는 B 3+ , Al 3+ , Ga 3+ , In 3+ 및 Tl 3+ 로 이루어진 군으로부터 선택된 하나 이상이고, E는 F - , Cl - , Br - , 및 I - 로 이루어진 군으로부터 선택된 하나 이상이고, 1.5≤a≤2.5, 1.0≤b≤2.5, 1.0≤c≤2.5, 3≤d≤5, 0≤x
Abstract:
PURPOSE: An (oxy)nitride phosphor is provided to realize excellent red useful for UV-LED and blue-LED type white light emitting diode and to ensure excellent efficiency. CONSTITUTION: An (oxy)nitride phosphor is the compound represented by the formula: {M_(1-x)Eu_x}_aSi_bO_cN_d, wherein M is the alkaline-earth metal; furthermore x is more than 1 and less than 1; a is more than 1.8 and less than 2.2; b is more than 4.5 and less than 5.5; c is more than or equal to 0 and less than 8; d is more than 0 and less than or equal to 8; c+d is more than 0 and less than or equal to 8.
Abstract:
PURPOSE: A process for preparing an environment-friendly (oxy) nitride phosphor is provided to prepare an (oxy) nitride red phosphor with excellent efficiency. CONSTITUTION: A process for preparing an environment-friendly (oxy) nitride phosphor represented by {M_(1-x)Eu_x}_aSi_bO_cN_d comprises the steps of: forming a mixture of an alkaline earth metal precursor, an europium precursor, acid, Si3N4 powder and chelate compound in a gel state; drying and plasticizing the mixture, and pulverizing the resultant; mixing 20-200 parts by weight of carbon based on 100.0 parts by weight of the plasticized powder; and plasticizing the mixture of the powder and carbon.
Abstract:
A method for preparing oxide nano phosphors is provided to ensure a simple and economical process because of not needing expensive materials and facilities, and to synthesize the oxide nano phosphors with uniform particle size distribution. A method for preparing oxide nano phosphors comprises the steps of preparing a metal precursor solution; impregnating porous polymer materials in the metal precursor solution; and heat-treating the porous polymer material containing the metal precursor solution. The heating process heats the porous polymer material containing the metal precursor solution at a heating rate of 100 ‹C or more per minute to 500 ‹C or more.