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색순도가 우수한 갈륨 산화물계 적색 형광체의 광발광 특성 KCI 등재 SCOPUS

Photoluminescence Characteristic of Gallate-Based Red Emitting Phosphors with High Color Purity

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한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

Eu3+-activated R3GaO6 (R=Y, Gd) phosphors were prepared in a conventional solid-state reactionand their optical properties were investigated. These compounds exhibit strong red emission under lightexcitation at 254nm. The emission spectra are dominated by peaks appearing around 610-630nm that areinduced by the electric dipole transition of 5D0→7F2 of Eu3+. In addition, the appropriate CIE (CommissionInternationale de l’clairage) chromaticity coordinates, (x=0.656, y=0.336) for Y3GaO6 and (x=0.655, y=0.334)for Gd3GaO6, become closer to the NTSC (National Television System Committee) standard values. With theoptimized activator concentrations, the maximum emission brightness is approximately 80% of Y2O3:Eu3+typical red-emitting phosphor with improved color purity under an excitation condition of 254nm.

저자
  • 김경운 | Kim, Kyoung-Un
  • 최성호 | 최성호
  • 정하균 | 정하균
  • 남산 | 남산