Fluorescent substance containing nitrogen, method for manufacturing the same, and light-emitting device
AssigneesKabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd., Toshiba Lighting & Technology Corporation
InventorsRyosuke Hiramatsu, Kazuaki Ootsuka, Naomi Shida, Masaaki Tamatani, Hisayo Uetake, Yoshihito Tsutsui
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Abstract
Disclosed is a method for manufacturing a nitrogen-containing fluorescent substance comprising accommodating an oxide fluorescent substance containing two or more elements in a receptacle made of a material containing carbon, and sintering the oxide fluorescent substance in a mixed gas atmosphere containing nitrogen gas.
Claims19
A method for manufacturing a nitrogen-containing fluorescent substance comprising:
- accommodating an oxide fluorescent substance comprising two or more metal elements in a receptacle made of a material comprising carbon;
- and
- sintering the oxide fluorescent substance accommodated in the receptacle made of a material comprising carbon in a mixed gas atmosphere comprising nitrogen gas to produce a nitrogen-containing fluorescent substance.
A method for manufacturing a nitrogen-containing fluorescent substance comprising:
- sintering an oxide fluorescent substance represented by the following general formula (1) in a mixed gas atmosphere containing nitrogen gas, thereby converting at least part of the oxide fluorescent substance into a nitrogen-containing fluorescent substance represented by the following general formula (2):
- M2SiO4:Z (1)
- M2Si5N8:Z (2)
- (wherein M is at least one selected from the group consisting of Sr, Ba and Ca;
- and Z is at least one activator selected from the group consisting of Eu and Ce).
Dependencies are inferred from the claim text.