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Thin-Film Oxide Phosphors as Electroluminescent Materials

Published online by Cambridge University Press:  10 February 2011

Tadatsugu Minami
Tadatsugu Minami*
Affiliation:
Electron Device System Laboratory, Kanazawa Institute of Technology 7-1 Ohgigaoka, Nonoichi, Ishikawa 921-8501, Japan
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Abstract

In this paper, we introduce rare earth- or transition metal-activated oxide phosphor thin films prepared by magnetron sputtering and dip-coated solution deposition. Thin-film electroluminescent (TFEL) devices using these oxide phosphor thin films as the emitting layer were investigated with a single insulating layer device structure using a thick ceramic sheet insulating layer. High-luminance multicolor emissions and high luminous efficiencies were obtained in TFEL devices using various oxide phosphors: binary compound, Ga2O3; ternary compound, Zn2SiO4, CaGa2O4 and ZnGa2O4; and multicomponent oxide, Zn2SiO4- Zn2GeO4 system. Luminances above 2000 cd/m2 were obtained in CaGa2O4:Mn and Zn2Si1−XGeXO4:Mn TFEL devices driven at 1 kHz. Maximum luminous efficiencies of 2.53, 1.7 and 1.2 lm/W were obtained in Zn2Si0.7Ge0.3O4:Mn, Ga2O3:Mn and ZnGa2O4:Mn TFEL devices, respectively. Stable long-term operation was obtained in dip-coated and sputtered Ga2O3:Mn phosphor TFEL devices even when driven at 10 kHz. Various thin-film oxide phosphors activated with transition metals are suitable for the emitting layer of full-color electroluminescent displays (ELD) without the use of color filters. In particular, Ga2O3 is very promising as a phosphor host material for ELDs.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 560: Symposium E – Luminescent Materials , 1999 , 47
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1. Destriau, G., J. Chim. Physique (France) 33, p.587 (1936).Google Scholar
2. Minami, T., Miyata, T., Takata, S. and Fukuda, I., Jpn. J. Appl. Phys. 30, LI17–L199 (1991).Google Scholar
3. Miyata, T., Minami, T., Takata, S. and Fukuda, I., SID Int. Symp. Digest of Tech. Papers, pp. 286–289 (1991).Google Scholar
4. Minami, T., Saikai, K., Takata, S. and Miyata, T., Proc. of 13th Int. Display Research Conf., pp.519–522 (1993).Google Scholar
5. Minami, T., Maeno, T., Kuroi, Y. and Takata, S., Jpn. J. Appl. Phys. 34 L684–L687 (1995)Google Scholar
6. Minami, T., Kubota, Y., Yamada, H. and Miyata, T., Proc. of 4th Int. Display Workshops, Nagoya, pp.677–680 (1997).Google Scholar
7. Miyata, T., Minami, T., J. Ito and Takata, S., Proc. of the 6th Int. Workshop on Electroluminescence, pp.228–233 (1992).Google Scholar
8. Minami, T., Takata, S., Kuroi, Y. and Maeno, T., SID Int. Symp. Digest of Tech. Papers, pp. 724–727 (1995).Google Scholar
9. Minami, T., Kubota, Y., Yamada, H., T. Miyata and Takata, S., Extended Abstracts of the 3rd Int. Conf. on the Science and Technology of Display Phosphors, pp.207–210 (1997).Google Scholar
10. Minami, T., Kuroi, Y., Yamada, H. and Takata, S., Proc. of 3rd Int. Display Workshops, Kobe, pp.53–56 (1996).Google Scholar
11. Minami, T., Extended Abstracts of the 3rd mnt. Conf. on the Science and Technology of Display Phosphors, pp. 195–198 (1997).Google Scholar
12. Xiao, T., Kitai, A. H., Liu, G. and Nakau, A., SID'97 Int. Symp. Digest of Tech. Papers, pp.415–418 (1997).Google Scholar
13. Kitai, A. H., Xiao, T., Liu, G. and Li, J.H., SID'97 Int. Symp. Digest of Tech. Papers, pp.419–422 (1997).Google Scholar
14. Minami, T., Kuroi, Y. and Takata, S., Journal of the SID 4/4, pp. 299–303 (1996).Google Scholar
15. Minami, T., Orito, S., Nanto, H. and Takata, S., Proc. of 6th Int. Display Research Conf., Tokyo, pp. 140–143 (1986).Google Scholar
16. Minami, T., Kuroi, Y., Sakagami, Y. and Miyata, T., Proc. of 3rd Int. Display Workshops, Kobe, pp.97–100 (1996).Google Scholar
17. Minami, T., Sakagami, Y. and Miyata, T., Extended Abstract of the Third Int. Conf. on the Science and Technology of Display Phosphor, pp.37–40 (1997).Google Scholar
18. Rack, P.D., Naman, A., Holloway, P.H., Sum, S.S. and Tuenge, R.T., MRS Bulletin, 21, 49–58 (1996).Google Scholar
19. Alt, P.M., Proc. of the SID, 25, No. 2, 123 (1984).Google Scholar
20. Barrow, W.A., Coovert, R.W., Dickely, E., King, C.N., Laakso, C., Sun, S.S., Tuenge, R.T., Wentross, R.C., Kane, J., SID'93 Int. Symp. Digest of Tech. Papers, p.761(1993).Google Scholar
21. King, C.N., Conf. Record of the 1994 Int. Display Research Conf., p. 69 (1994).Google Scholar
22. Shionoya, A. Phosphor hand book.Google Scholar
23. Minami, T., Kuroi, Y., Yamada, H., Takata, S. and Miyata, T., Proc. of the 16th Int. Display Research Conf., pp.215–218 (1996).Google Scholar
24. Minami, T., Kuroi, Y., Yamada, H. and Takata, S., Journal of the SID 6, pp. 17–22 (1998).Google Scholar
25. Minami, T., Kubota, Y. and Miyata, T., Proc. of 18th Int. Display Research Conf. Korea, pp.1015–1018 (1997).Google Scholar
26. Minami, T., Kubota, Y., Miyata, T. and Yamada, H., SID'98 Int. Symp. Digest of Tech. Papers, pp.953–956 (1998).Google Scholar
27. Xiao, T. and Kitai, A. H., Proc. of 17th Int. Display Research Conf., Toronto, pp.310–313 (1997).Google Scholar
28. Miyata, T., Minami, T., Saikai, K. and Takata, S., J. Lumin. 60, pp.926–929 (1994).Google Scholar
29. Minami, T., Kubota, Y. and Miyata, T., Proc. of 5th Int. Display Workshops, Kobe, pp. 609–612 (1998).Google Scholar
30. Minami, T., Yamada, H., Kubota, Y., Miyata, T. and Sakagami, Y., Proc. of 4th Int. Display Workshops, Nagoya, pp.605–608 (1997).Google Scholar
31. Davidson, J.D., J.Appl.Phys 71, pp.4040–4048 (1992).Google Scholar