Title:
RED PHOSPHOR AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2018062596
Kind Code:
A
Abstract:
SOLUTION: A red phosphor comprises an Mn-activated complex fluoride represented by formula (1) and has a peak of light emission spectra of 600-650 nm, a fluorescent life of 5.0 ms or less, and an internal quantum efficiency of 0.60 or more when excited at 450 nm. AMF: Mn (1) (M is at least one tetravalent element selected from Si, Ti, Zr, Hf, Ge and Sn, where Ti or Ge needs to be included; Ais at least one alkali metal selected from Li, Na, K, Rb and Cs, where at least one of Na, Rb and Cs needs to be included).EFFECT: To obtain a red phosphor that is suitable for a display device requiring high-speed and precision display performance, has a relatively short fluorescent life, and has high intensity and efficiency of light emission.SELECTED DRAWING: Figure 2
Inventors:
KANEYOSHI MASAMI
Application Number:
JP2016202546A
Publication Date:
April 19, 2018
Filing Date:
October 14, 2016
Export Citation:
Assignee:
SHINETSU CHEMICAL CO
International Classes:
C09K11/67; C09K11/66
Domestic Patent References:
| JP2016080802A | 2016-05-16 | |||
| JP2015193857A | 2015-11-05 |
Foreign References:
| US20150361336A1 | 2015-12-17 |
Other References:
"Co-precipitation Synthesis and Luminescence Properties of Na2TiF6:Mn4+ Red Phosphors for Warm White", CHINESE JOURNAL OF LUMINESCENCE, vol. 36, no. 12, JPN6019024912, 10 December 2015 (2015-12-10), pages 1402 - 1408, ISSN: 0004185295
"A New and efficient red phosphor for solid-state lighting: Cs2TiF6:Mn4+", JOURNAL OF MATERIALS CHEMISTRY C, vol. 3, no. 37, JPN6019024914, 7 October 2015 (2015-10-07), pages 9615 - 9619, ISSN: 0004185296
"Red-emitting phosphors Na2XF6:Mn4+ (X=Si,Ge,Ti) with high colour-purity for warm white-light-emittin", RSC ADV., vol. 5, no. 72, JPN6019024915, 29 June 2015 (2015-06-29), pages 58136 - 58140, ISSN: 0004185297
"A New and efficient red phosphor for solid-state lighting: Cs2TiF6:Mn4+", JOURNAL OF MATERIALS CHEMISTRY C, vol. 3, no. 37, JPN6019024914, 7 October 2015 (2015-10-07), pages 9615 - 9619, ISSN: 0004185296
"Red-emitting phosphors Na2XF6:Mn4+ (X=Si,Ge,Ti) with high colour-purity for warm white-light-emittin", RSC ADV., vol. 5, no. 72, JPN6019024915, 29 June 2015 (2015-06-29), pages 58136 - 58140, ISSN: 0004185297
Attorney, Agent or Firm:
Hideaki International Patent Office