PHOSPHOR POWDER, WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE

Title:

PHOSPHOR POWDER, WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2022/186069

Kind Code:

A1

Abstract:

A phosphor powder which contains a phosphor that is represented by general formula (I). In general formula (I), M1 comprises at least La, and may additionally comprise one or more elements that are selected from the group consisting of Y and lanthanoid elements other than La; M2 comprises at least Ba, and may additionally comprise one or more elements that are selected from the group consisting of Mg, Ca and Sr; x is from 0.05 to 0.2; y is from 0 to 0.1; and z is more than 0.44 but not more than 0.99.)　(I): (Eu(1-x)(1-z)M1xM2(1-x)z)2(Si1-yAly)5N8

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Inventors:

BANNO HIROKI (JP)
TOYOSHIMA HIROAKI (JP)

Application Number:

PCT/JP2022/007868

Publication Date:

September 09, 2022

Filing Date:

February 25, 2022

Export Citation:

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Assignee:

DENKA COMPANY LTD (JP)

International Classes:

C09K11/80; G02B5/20; H01L33/50

Domestic Patent References:

WO2020015412A1

2020-01-23

Foreign References:

CN102766454A	2012-11-07
CN101831295A	2010-09-15
US20100163896A1	2010-07-01

Attorney, Agent or Firm:

HAYAMI Shinji (JP)

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