| FED용 GdOBr:Ce 청색 형광체의 제조 및 발광특성 |
| 이준, 박정규, 한정화1, 박희동, 윤석승2 |
한국화학연구원 화학소재부
1한라대학교 교양과정부
2충남대학교 화학과 |
| Preparation and Luminescent Properties of GdOBr:Ce Blue Phosphors for FED |
| Jun Lee, Joung-Kyu Park, Cheong-Hwa Han1, Hee-Dong Park, Sock-Sung Yun2 |
Display Phosphor Group, Korea Research Institute of Chemical Technology
1Department of Chemistry, Halla University
2Department of Chemistry, Chungnam National University |
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| ABSTRACT |
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The GdOBr:Ce phosphor were prepared by solid state reaction using starting chemicals of $Gd_2O_3,;CeO_2;and;NH_4Br$. Under 370nm UV excitation, GdOBr:Ce phosphors showed blue emission band with a spectral range of 410∼430nm. The maximum photoluminescence(PL) emission intensity was observed at 2mol% Ce content. In order to look for feasibility of application for low voltage filed emission display, cathodoluminescence(CL) of GdOBr:Ce phosphors were measured. CL emission spectra was found to be in the range of 410∼430nm, which is the same as PL spectra. The phosphors with 1mol% Ce concentration showed the maximum CL emission intensity. For the comparison of degradation property of the prepared phosphors with commercial ones, the electron beam was applied for 10min. From the result, GdOBr:Ce could be used as a blue phosphor for FED. |
| Key words:
Phosphor, FED, GdOBr:Ce, Solid state reaction |
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