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논문 기본 정보

자료유형
학술저널
저자정보
Xiuying Tian (Hunan University of Humanities Science and Technology) Lei Li (Hunan University of Humanities Science and Technology) Mengyuan Wei (Hunan University of Humanities Science and Technology) Changyan Ji (Hunan University of Humanities Science and Technology) Zhi Huang (National Electronic Ceramic Product Quality Supervision and Inspection Center) Xin Liu (Hunan University of Humanities Science and Technology) Jin Wen (Hunan University of Humanities Science and Technology) Yangxi Peng (Hunan University of Humanities Science and Technology)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제5호
발행연도
2021.10
수록면
555 - 567 (13page)
DOI
10.36410/jcpr.2021.22.5.555

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CaTiO3: Eu3+ red phosphors with high thermal stability and temperature sensitivity were synthesized by KCl flux assisted solidphase reaction method and they had orthorhombic perovskite phase. CaTiO3:15%Eu3+ had the irregular particle structure,with mean particle size of about 1.58 μm, while CaTiO3:15%Eu3+ +6%KCl also had the irregular particle structure, with meanparticle size of about 2.25 μm. When Eu3+ ion concentration was 15mol%, concentration quenching phenomenon took place,which could be explained by electric dipole-dipole interaction due to the critical Eu3+- Eu3+ distance of ~ 8.93 A. We found thatKCl flux could increase the particle size and crystallinity, which was beneficial to luminescence property. Based on the PLspectra excited at 398 nm, the color coordinates of CaTiO3:15%Eu3+ were (0.5911, 0.4008) and the color purity was 97.7%,while the color coordinates of sample CaTiO3:15%Eu3++ 6%KCl were (0.6042, 0.3895) and the color purity was 98.4%. Therelative intensity IR1 and IR2 at 423 K is 87. 29% and 83. 22%, indicating the sample had high thermal stability. Based on TCLsFIR, Sr of CaTiO3:15%Eu3+ is 2322.67/T^2. CaTiO3:Eu3+ red phosphor was expected to be a promising inorganic material forpossible applications in temperature sensing.

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