The Luminescence Properties of Sm3+ Doped NaLuP2O7 Phosphor for X-ray Imaging; X-ray 영상을 위한 NaLuP2O7: Sm3+ 형광체의 발광특성

초록

The Sm3+-doped NaLuP<inf>2</inf>O<inf>7</inf> phosphor was synthesized by solid state reaction method at 700 ℃ for 40 hours. The sintered phosphor was characterized by X-ray diffraction (XRD) and FE-SEM (field emission scanning electron microscope) technique. The Sm3+-doped NaLuP<inf>2</inf>O<inf>7</inf> phosphor shows PL (photoluminescence) and XRL (X-ray luminescence) spectra in the red region because of 4G<inf>j</inf> to 6H<inf>j</inf> transition. The CIE chromaticity diagram shows the red color. The Sm3+-doped NaLuP<inf>2</inf>O<inf>7</inf> phosphors were widely applied in medical and all industrial fields. Especially, the rare earth as a host materials have a high absorption efficiency for X-ray and gamma-ray because their high effective Z-number (Z<inf>eff</inf> = 53). Therefore, optical properties of the Sm3+-doped NaLuP<inf>2</inf>O<inf>7</inf> phosphor will be presented for the future opportunities in this research. © 2024 Korean Physical Society. All rights reserved.

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