Synthesis of CaZrO₃ : Eu³⁺ phosphor by skull melting method (스컬용융법에 의한 CaZrO₃ : Eu³⁺ 형광체 합성)

Hyun-Min Choi (최현민); Young-Chool Kim (김영출); SEOK, JEONG-WON (석정원)

doi:10.6111/JKCGCT.2020.30.4.131

Synthesis of CaZrO₃ : Eu³⁺ phosphor by skull melting method

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2020, 30(4), pp.131-135
DOI : 10.6111/JKCGCT.2020.30.4.131
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : July 20, 2020
Accepted : July 30, 2020
Published : August 31, 2020

Hyun-Min Choi ¹, Young-Chool Kim ¹, SEOK, JEONG-WON ²

¹한미보석감정원
²동신대학교

Accredited

ABSTRACT

Single crystal phased CaZrO3 : Eu3+ phosphor have been synthesized by skull melting method. The crystalstructure, morphology and optical properties of synthesized phosphor were investigated XRD (X-ray diffraction), SEM(scanning electron microscopy), UV (ultraviolet) fluorescence reaction and PL (photo luminescence). The starting materialshaving chemical composition of CaO: ZrO2 : Eu2O3= 0.962 : 1.013 : 0.025 mol% were charged into a cold crucible. The coldcrucible was 120 mm in inner diameter and 150 mm in inner height, and 3 kg of mixed powder (CaO, ZrO2 and Eu2O3)was completely melted within 1 hour at an oscillation frequency of 3.4 MHz, maintained in the molten state for 2 hours,and finally air-cooled. The XRD results show that synthesized phosphor is stabilized in orthorhombic perovskite structurewithout any impurity phases. The synthesized phosphor could be excited by UV light (254 or 365 nm) and the emissionspectra results indicated that bright red luminescence of CaZrO3 : Eu3+ due to magnetic dipole transition ⁵D₀→⁷F₂ at 615nm was dominant.

KEYWORDS

Skull melting method, CaZrO3 : Eu3+, Phosphor, Luminescence, Emission spectra

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Synthesis of CaZrO₃ : Eu³⁺ phosphor by skull melting method

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Synthesis of CaZrO₃ : Eu³⁺ phosphor by skull melting method

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