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초록
We have synthesized Eu3+-doped YVO4 phosphors by using a hydrothermal method and investigated their luminescent properties. Aqueous solutions of Y2O3, V2O5, Eu2O3, and nitric acid with various pH values were used as the precursors. The crystallinity, surface condition, and emission characteristics were examined using XRD, FT-IR, and photo-excited spectrometer. Eu3+ incorporation followed by the efficient red emission strongly depends on the acidity of solution media. The emission intensity becomes stronger as the pH values increase to 7 and then gradually decreases. This phenomenon might be related to the hydroxyl quenching effect, which is induced by surface bound OH- groups.
키워드
Hydrothermal synthesis; Photoluminescence; Yttrium vanadates; Acids; Europium; Light emission; Luminescence; Nitric acid; pH; pH effects; Phosphors; Quenching; Solutions; Synthesis (chemical); Transition metal compounds; Yttrium; Aqueous solutions; Crystallinity; Emission charac-teristics; Emission intensities; Hydrothermal methods; Luminescent properties; Ph values; Quenching effects; Red emissions; Surface bounds; Surface conditions; Various ph; Yttrium vanadates; Hydrothermal synthesis
- 제목
- Luminescent properties of YVO4: Eu3+ phosphor by using hydrothermal synthesis
- 저자
- Moon, Y.-M.; Choi, S.; Jung, H.-K.; Lim, S.H.
- 발행일
- 2008
- 유형
- Article
- 저널명
- 한국재료학회지
- 권
- 18
- 호
- 10
- 페이지
- 511 ~ 514