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    • 2. 发明公开
    • QUANTUM DOTS WITH REDUCED SATURATION QUENCHING
    • QUANTENPUNKTE MIT VERRINGERTERSÄTTIGUNGSABSCHRECKUNG
    • EP3134922A1
    • 2017-03-01
    • EP15713784.5
    • 2015-04-08
    • Koninklijke Philips N.V.
    • KOOLE, RoelofLUNZ, ManuelaVELDMAN, DirkBAESJOU, Patrick John
    • H01L31/0352B82Y20/00G02B6/122
    • H01L33/502B82Y20/00G02B6/1225G02B6/1226H01L33/507H01L2933/0083
    • The invention provides a lighting device comprising (a) a light converter comprising a light receiving face; and (b) a solid state light source configured to generate a light source light with a photon flux of at least 10 W/cm2 at the light receiving face, wherein the light converter is configured to convert at least part of the light source light into light converter light having a first frequency, wherein the light converter comprises a semiconductor quantum dot in an optical structure selected from a photonic crystal structure and a plasmonic structure, wherein the optical structure is configured to increase the photon density of states in the light converter resonant with the first frequency for reducing saturation quenching, and wherein the quantum dot has a quantum efficiency of at least 80%.
    • 本发明提供一种照明装置(1),包括:(a)包括光接收面(110)的光转换器(100); 和(b)固态光源(10),其被配置为在所述光接收面(110)处产生具有至少10W / cm 2的光子通量的光源光(11),其中所述光转换器 被配置为将至少一部分光源光(11)转换成具有第一频率的光转换器光(101),其中所述光转换器(100)包括在光学结构(30)中选择的半导体量子点(20) 光子晶体结构(31)和等离子体激元结构(32),其中所述光学结构(30)被配置为增加所述光转换器(100)中与所述第一频率谐振的状态的光子密度以减少饱和猝灭,并且其中 量子点(20)具有至少80%的量子效率。
    • 8. 发明公开
    • SILICA COATED QUANTUM DOTS WITH IMPROVED QUANTUM EFFICIENCY
    • 硅氧烷消泡剂QUANTENNUSBEUTE
    • EP3174952A1
    • 2017-06-07
    • EP15739641.7
    • 2015-07-24
    • Koninklijke Philips N.V.
    • KOOLE, RoelofBAESJOU, Patrick JohnBOHMER, Marcel RenePETERS, Joep Lodewijk
    • C09K11/02C09K11/56H01L31/0232A61K49/00
    • The invention provides a method for the production of a luminescent material, (10) based on coated quantum dots (100), comprising: (i) providing luminescent quantum dots (100) in a liquid medium (20) wherein the luminescent quantum dots (100) have an outer layer (105) comprising first cations and first anions; and (ii) providing in a coating process a coating (120) on the outer layer (105) of the quantum dots (100) in the liquid medium (20), wherein the coating (120) comprises a silica coating; wherein during the coating process, or after the coating process, or during and after the coating process, the liquid medium (20) comprises one or more of a third element and a fourth element, wherein the first cation and the third element belong to the same group of the periodic system, and wherein the first anion and the fourth element belong to the same group of the periodic system.
    • 本发明提供一种用于生产发光材料的方法,(10)基于涂覆的量子点(100),包括:(i)在液体介质(20)中提供发光量子点(100),其中发光量子点( 100)具有包含第一阳离子和第一阴离子的外层(105) 和(ii)在涂覆过程中提供液体介质(20)中量子点(100)的外层(105)上的涂层(120),其中涂层(120)包括二氧化硅涂层; 其中在涂覆过程期间,或涂覆过程之后,或在涂覆过程期间和之后,液体介质(20)包括第三元素和第四元素中的一种或多种,​​其中第一阳离子和第三元素属于 同一组周期性系统,并且其中第一阴离子和第四元素属于周期性系统的相同组。