Eu3+ 掺杂 Bi4Ti3O12 薄膜铁电性与发光调控及信息编码应用
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关键词： Bi4Ti3O12 Eu3+ 掺杂；铁电性；溶胶-凝胶法；数字编码中图分类号：0482.31 文献标识码：ADOI：10.37188/CJL.20250041 CSTR：32170.14.CJL.20250041
Ferroelectric and Luminescence Modulation in Eu3+ -doped Bi4Ti3O12 Thin Films for Information Encoding Applications
FUJianhai 1，2 ，LI Qiqing'，JIA Yuping'，LONG Fei1，²，GAN Dechao 1，2 ，WANG W ang1 CHEN Haoran1，CHANG Yulei1*
1.StateKeyLaboratory ofLuminescence Scienceand Technology，ChangchunInstituteofOptic. FineMechanics andPhysics，Chinese Academy ofSciences，Changchun13oo33，China; 2.UniversityofChineseAcademyofSciences，Beijing1Ooo49，China） *CorrespondingAuthor，E-mail：yuleichang@ciomp.ac.cn
Abstract：Ferroelectricoxide Bi4Ti3O12（BIT） possesses a unique layered perovskite structure and excellent ferroelectric properties，capableof inducing structural distortions inthecrystallaticeunderanexternalelectricfield. Rare-earth （ Re3+ ）ion doping of BIT has attracted significant attention due to the sensitivity of its luminescence intensity to changes in crystal symmetry，implying that the luminescence intensity of Res+ can be modulated by applying an external electric field.However，simultaneouslyachieving superior luminescence and feroelectricperformance imposes higher requirements on the doping species and concentration ofrare-earth ions，presenting a majorchallnge in thisfield.Inthis study，BIT filmswith differentEu3dopingconcentrations（BIT ：xEu ）were prepared using the solgelmethodand their ferroelectricand luminescent properties were systematically investigated.The filmsachieved enhanced ferroelectricperformance at low dopingconcentrations （x⩽0.5 ）.Meanwhile，at x=0，3 ，the photoluminescence（PL）intensity of theBIT： xEu filmswasmodulated dynamicallyand reversibly inreal timeby applying an external electric field.Bymanipulating thePLemission，wesuccessfullymappeddesigned digital encoding electrical signals to visible light emission waveforms，achieving informationencoding.These findings providenew possibilitiesfor applications in optical information storage and optoelectronic synaptic devices.
Key words： Bi4TI3O12 Eu3+ doping；ferroelectricity；sol-gel method；signal encoding
1引言
氧化物铁电材料是一类具有自发极化特性的功能材料，其极化状态可以在外部电场作用下发生翻转，展现出独特的电学、光学和力学性能。（剩余15566字）