JPS54112791A - Phosphor - Google Patents

Phosphor

Info

Publication number
JPS54112791A
JPS54112791A JP2132478A JP2132478A JPS54112791A JP S54112791 A JPS54112791 A JP S54112791A JP 2132478 A JP2132478 A JP 2132478A JP 2132478 A JP2132478 A JP 2132478A JP S54112791 A JPS54112791 A JP S54112791A
Authority
JP
Japan
Prior art keywords
phosphor
alkaline earth
bluish green
formula
rays
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2132478A
Other languages
Japanese (ja)
Other versions
JPS5944341B2 (en
Inventor
Jiro Narita
Katsuo Murakami
Yoshinori Anzai
Hiroshi Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2132478A priority Critical patent/JPS5944341B2/en
Publication of JPS54112791A publication Critical patent/JPS54112791A/en
Publication of JPS5944341B2 publication Critical patent/JPS5944341B2/en
Expired legal-status Critical Current

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  • Luminescent Compositions (AREA)

Abstract

PURPOSE: To provide a bluish green luminous phosphor the luminous power of which is further enhanced by substituting Ce and/or Tb for part of the alkaline earth metals of a divalent Eu-activated alkaline earth metal borophosphate phosphor.
CONSTITUTION: A phosphor of this invention has a chemical compsn. formula represented by formula I, wherein Me is Ce and/or Tb, 0≤x≤0.5, 0≤y≤0.2, 0<z≤0.10, 0.001≤p≤0.15, 1.75≤m≤2.30 and 0.05≤n≤0.23. The phosphor is excited with ultraviolet rays of short and long wavelengths, blue visible radiation and cathode-rays to emit highly efficient bluish green luminescence the max. wavelength of which is 480W490 mn. This phosphor is synthesized as follows: Ca, Sr and Ba carbonates, secondary phosphate, (NH4)2HPO4, H3BO3, CeO2, Tb4O7, Eu2O3, etc. are mixed charged into a ceramic crucible, and calcined in an electric furnace kept under a reducing atmosphere at about 1000W1250°C for a fixed time.
COPYRIGHT: (C)1979,JPO&Japio
JP2132478A 1978-02-24 1978-02-24 fluorescent material Expired JPS5944341B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2132478A JPS5944341B2 (en) 1978-02-24 1978-02-24 fluorescent material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2132478A JPS5944341B2 (en) 1978-02-24 1978-02-24 fluorescent material

Publications (2)

Publication Number Publication Date
JPS54112791A true JPS54112791A (en) 1979-09-03
JPS5944341B2 JPS5944341B2 (en) 1984-10-29

Family

ID=12051960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2132478A Expired JPS5944341B2 (en) 1978-02-24 1978-02-24 fluorescent material

Country Status (1)

Country Link
JP (1) JPS5944341B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810416A (en) * 1979-08-03 1989-03-07 Kasei Optonix, Ltd. Borate phosphor
KR100445908B1 (en) * 2001-12-26 2004-08-25 한국전자통신연구원 Blue phosphor for fluorescent display and method for synthesizing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6428138U (en) * 1987-08-11 1989-02-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810416A (en) * 1979-08-03 1989-03-07 Kasei Optonix, Ltd. Borate phosphor
KR100445908B1 (en) * 2001-12-26 2004-08-25 한국전자통신연구원 Blue phosphor for fluorescent display and method for synthesizing the same

Also Published As

Publication number Publication date
JPS5944341B2 (en) 1984-10-29

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