Luminescent properties of blue-emitting CaS:Cu,F thin films

Author

Nakanishi, Y. ; Kawasumi, A. ; Aoki, T. ; Tatsuoka, H. ; Kuwabara, H. ; Hatanaka, Y.

Author_Institution

Res. Inst. of Electron., Shizuoka Univ., Japan

fYear

1999

fDate

1999

Firstpage

61

Lastpage

64

Abstract

Structural and luminescent properties of CaS:Cu,F thin films prepared by the electron beam evaporation have been investigated. The film annealed at higher than 750°C showed [110] orientation and the crystallinity of the film was improved with increasing annealing temperature. The annealed films showed spectra with peaks at 435 and 450 nm and broad emission at longer wavelength at room temperature, and the 435 nm emission became dominant by the annealing at temperatures higher than 750°C. It was suggested from the measurement of the time-resolved emission spectra that the blue luminescence of not only the phosphor but also the film is not due to D-A pair recombination but due to the intraionic transition in the Cu⁺ ion

Keywords

X-ray diffraction; annealing; calcium compounds; copper; electroluminescence; electroluminescent displays; electron beam deposition; fluorine; optical films; phosphors; photoluminescence; time resolved spectra; 435 nm; 450 nm; 600 to 800 C; CaS:Cu,F; Cu⁺ ion; X-ray diffraction; [110] orientation; annealing temperature; blue-emitting thin films; broad emission; crystallinity; electroluminescence; electron beam evaporation; full colour TFEL displays; intraionic transition; luminescent properties; phosphor; photoluminescence; structural properties; time-resolved emission spectra; Annealing; Argon; Content addressable storage; Electron beams; Luminescence; Phosphors; Substrates; Temperature; Transistors; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Display, 1999. ASID '99. Proceedings of the 5th Asian Symposium on

Conference_Location

Hsinchu

Print_ISBN

957-97347-9-8

Type

conf

DOI

10.1109/ASID.1999.762714

Filename

762714