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    • 3. 发明授权
    • Luminescent powder, method for producing the luminescent powder and luminescent body provided with luminescent powder
    • 发光粉末,发光粉末的制造方法和具有发光粉末的发光体
    • US07481951B2
    • 2009-01-27
    • US10513724
    • 2003-05-28
    • Frank JermannMarkus RichterWolfgang RossnerMartin Zachau
    • Frank JermannMarkus RichterWolfgang RossnerMartin Zachau
    • C09K11/80
    • C09K11/7774C09K11/08H01L2224/32245H01L2224/48091H01L2224/48247H01L2224/73265H01L2924/00014H01L2924/00
    • A luminescent powder (1) with luminescent particles (2) having an average luminescent-particle size (3) selected from the range of from 0.1 μm inclusive to 5.0 μm inclusive. The luminescent particles comprise primary particles (4) having an average primary-particle size (5) selected from the range of from 0.1 μm inclusive to 1.0 μm inclusive. The primary particles which, for example, consist of a cerium-doped yttrium-aluminum garnet (Y3Al5O12), are agglomerated to form the luminescent particles. A method for producing the luminescent powder has the following steps: a) preparing at least one precursor of the primary particles, b) producing the primary particles from the precursor of the primary particles, and c) forming the luminescent particles of the luminescent powder from the primary particles. The precursor for Y3Al5O12 is, for example, a powder mixture of hydroxides. In order to prepare the precursor, the hydroxides are precipitated from a sulfuric-acid solution containing metal by dropwise addition of a basic ammonia solution. The precipitate is dried and subsequently calcined, so that the primary particles are formed and simultaneously cluster together to form the luminescent particles of the luminescent powder.
    • 具有平均发光粒径(3)的发光粒子(2)的发光粉末(1)选自0.1μm以上且5.0μm以下的范围。 发光粒子包含平均一次粒径(5)的一次粒子(4),其选自包括0.1〜1.0μm的范围的0.1μm以上1.0μm以下的范围。 例如由铈掺杂的钇铝石榴石(Y3Al5O12)组成的初级颗粒被聚集以形成发光颗粒。 一种发光粉末的制造方法,其特征在于,具备以下工序:a)制备所述一次粒子的至少一种前体,b)从所述一次粒子的前体制备所述一次粒子,c)从所述一次粒子的前体形成发光粒子, 初级粒子。 Y 3 Al 5 O 12的前体是例如氢氧化物的粉末混合物。 为了制备前体,通过滴加碱性氨溶液使氢氧化物从含有金属的硫酸溶液中沉淀。 将沉淀物干燥并随后煅烧,使得初级颗粒形成并同时聚集在一起以形成发光粉末的发光颗粒。
    • 6. 发明申请
    • Luminescent powder, method for producing the luminescent powder and luminescent body provided with luminescent powder
    • 发光粉末,发光粉末的制造方法和具有发光粉末的发光体
    • US20060022580A1
    • 2006-02-02
    • US10513724
    • 2003-05-28
    • Frank JermannMarkus ZornikWolfgang RossnerMartin Zachau
    • Frank JermannMarkus ZornikWolfgang RossnerMartin Zachau
    • H01J1/62
    • C09K11/7774C09K11/08H01L2224/32245H01L2224/48091H01L2224/48247H01L2224/73265H01L2924/00014H01L2924/00
    • A luminescent powder (1) with luminescent particles (2) having an average luminescent-particle size (3) selected from the range of from 0.1 μm inclusive to 5.0 μm inclusive. The luminescent particles comprise primary particles (4) having an average primary-particle size (5) selected from the range of from 0.1 μm inclusive to 1.0 μm inclusive. The primary particles which, for example, consist of a cerium-doped yttrium-aluminum garnet (Y3Al5O12), are agglomerated to form the luminescent particles. A method for producing the luminescent powder has the following steps: a) preparing at least one precursor of the primary particles, b) producing the primary particles from the precursor of the primary particles, and c) forming the luminescent particles of the luminescent powder from the primary particles. The precursor for Y3Al5O12 is, for example, a powder mixture of hydroxides. In order to prepare the precursor, the hydroxides are precipitated from a sulfuric-acid solution containing metal by dropwise addition of a basic ammonia solution. The precipitate is dried and subsequently calcined, so that the primary particles are formed and simultaneously cluster together to form the luminescent particles of the luminescent powder.
    • 具有平均发光粒径(3)的发光粒子(2)的发光粉末(1)选自0.1μm以上且5.0μm以下的范围。 发光粒子包含平均一次粒径(5)的一次粒子(4),其选自包括0.1〜1.0μm的范围的0.1μm以上1.0μm以下的范围。 例如由铈掺杂的钇铝石榴石(Y 3 N 5 O 12 O 12)组成的初级颗粒聚集 以形成发光颗粒。 一种发光粉末的制造方法,其特征在于,具备以下工序:a)制备所述一次粒子的至少一种前体,b)从所述一次粒子的前体制备所述一次粒子,c)从所述一次粒子的前体形成发光粒子, 初级粒子。 Y 3 O 5 O 12 12的前体是例如氢氧化物的粉末混合物。 为了制备前体,通过滴加碱性氨溶液使氢氧化物从含有金属的硫酸溶液中沉淀。 将沉淀物干燥并随后煅烧,使得初级颗粒形成并同时聚集在一起以形成发光粉末的发光颗粒。