Simultaneous improving luminescence intensity and stability,reduce cation vacancies of rare-earth doped CaF_(2)by charge selfcompensationOA
Although upconversion rare-earth(RE)materials have excellent luminescence properties,the luminescence intensity and thermal stability of phosphors are not favorable due to RE doping induced vacancies.This work focused on enhancing luminescence intensity and stability of phosphor by charge compensation and three-dimensional(3D)printing.The luminescence results showed that Ca_(0.697)Yb_(0.2)Er_(0.0015)Tm_(0.0005)F_(2)with charge compensation exhibited luminescence intensity 3.2 times higher than that of Ca_(0.798)Yb_(0.2)Er_(0.0015)Tm_(0.0005)F_(2)non-charge compensation.The luminescence of resin-coated luminescent materials is still stable after 6 months.The constructed white light-emitting diodes(WLEDs)also exhibit consistent and outstanding color rendering characteristics,with a color rendering index(CRI)of up to 81 and a low color temperature(CCT).
Yuxin Liu;Zhangong Bai;Ao Xu;Guofeng Wang
Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,ChinaKey Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,ChinaKey Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,ChinaKey Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China
化学化工
upconversion luminescence enhancementcharge compensationluminescence stabilitythree-dimensional(3D)printingdensity functional theory(DFT)
《Nano Research》 2026 (4)
P.843-852,10
supported by the National Natural Science Foundation of China(No.22271080)the Joint Guidance Project of Heilongjiang Natural Science Foundation(No.LH2023B020).
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