스컬용융법에 의한 CaZrO3:Pr 3+ 형광체 합성 및 특성분석
Synthesis and characterization of CaZrO3:Pr 3+ phosphor by skull melting method
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초록
페로브스카이트 구조를 가지는 Ca1-xZrO3:xPr 형광체를 스컬용융법으로 합성하였다. 합성한 형광체의 결정구조, 형태 및 광학적 특성은 XRD, SEM, 자외선 형광반응 및 광발광을 통해 분석하였다. XRD 측정에서는 CaZrO3:pr3+의 단결정이 페로브스카이트 구조의 사방정계로 분석되었다. 합성된 형광체는 254 nm의 UV 광에 의해 여기 될 수 있고 방출 스펙트럼 결과는 506, 536 및 548 nm에서 전하전이 3P0→3H4, 3P1→3H5 및 3P0→3H5 로 인해 CaZrO3:Pr3+는 녹색 발광이 우세하였다.
Abstract
Ca1-xZrO3:xPr phosphor with perovskite structure was successfully synthesized by using skull melting method. The crystal structure, morphology and optical properties of synthesized phosphor were characterized using X-ray diffraction(XRD), scanning electron microscopy (SEM), ultraviolet fluorescence reaction and photoluminescence. The XRD results indicated that single crystals of CaZrO3:Pr3+ belongs to orthorhombic perovskite system. The synthesized phosphor could beexcited by UV light (254 nm) and the emission spectra results indicated that green luminescence of CaZrO3:Pr3+ due to charge transfer transition 3P0→3H4, 3P1→3H5 and 3P0→3H5 at 506, 536 and 548 nm was dominant.
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