Eu3+-doped A3Al1-zInzO4F (A = Ca, Sr, Ba, z = 0, 0.1)의 합성과 형광특성

김여진; 박상문; Yeo-Jin Kim; Sangmoon Park

Korean Journal of Materials Research, Vol.21, No.12, 644-649, December, 2011

DOI10.3740/MRSK.2011.21.12.644 Export Citation

Eu3+-doped A3Al1-zInzO4F (A = Ca, Sr, Ba, z = 0, 0.1)의 합성과 형광특성

Preparation and Luminescent Property of Eu3+-doped A3Al1-zInzO4F (A = Ca, Sr, Ba, z = 0, 0.1) Phosphors

김여진, 박상문^†

신라대학교 에너지응용화학과

Yeo-Jin Kim, and Sangmoon Park^†

Department of Engineering in Energy and Applied Chemistry, Silla University, Busan 617-736, Korea

E-mail:

A3-2x/3Al1-zInzO4F: Eux 3+ (A = Ca, Sr, Ba, x = -0.15, z = 0, 0.1) oxyfluoride phosphors were simply prepared by the solid-state method at 1050oC in air. The phosphors had the bright red photoluminescence (PL) spectra of an A3-2x/3Al1-zInzO4F for Eu3+ activator. X-ray diffraction (XRD) patterns of the obtained red phosphors were exhibited for indexing peak positions and calculating unit-cell parameters. Dynamic excitation and emission spectra of Eu3+ activated red oxyfluoride phosphors were clearly monitored. Red and blue shifts gradually occurred in the emission spectra of Eu3+ activated A3AlO4F oxyfluoride phosphors when Sr2+ by Ca2+ and Ba2+ ions were substituted, respectively. The concentration quenching as a function of Eu3+ contents in A3-2x/3AlO4F:Eu3+ (A = Ca, Sr, Ba) was measured. The interesting behaviors of defect-induced A3-2x/3Al1-zInzO4-αF1-δ phosphors with Eu3+ activator are discussed based on PL spectra and CIE coordinates. Substituting In3+ into the Al3+ position in the A3-2x/3AlO4F:Eu3+ oxyfluorides resulted in the relative intensity of the red emitted phosphors noticeably increasing by seven times.

Keywords:oxyfluoride;activator;concentration quenching;defect-induced phosphor

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