Inhibiting oxygen vacancies and twisting NbO6 octahedron in erbium modified KNN-based multifunctional ceramics

IF 8.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL Journal of Materiomics Pub Date : 2024-01-01 DOI:10.1016/j.jmat.2023.05.007

Lulu Gao , Zhiyong Liu , Pengrong Ren , Renhong Liang , Ting Li , Kun Guo , Bing Xie , Jinshan Lu , Pu Mao , Jun Tian , Longlong Shu

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Abstract

It is a challenge to obtain highly tunable multifunctional performances in one ferroelectric system by a simple approach to meet the miniaturization, integration, and functionalization requirements of advanced electronic components. Herein, rare earth erbium (Er) modulated 0.9K_0.5Na_0.5NbO₃-0.1Sr_(1-x)Er_xTi_(1-x/4)O₃, (0.9KNN-0.1ST: xEr) transparent-photoluminescent-ferroelectric energy storage multifunctional ceramics are prepared to solve this problem. The effect of lattice distortion and oxygen vacancies by Er doping on the optical and electrical properties is systematically investigated. The Er³⁺ ions can introduce a large distortion of the NbO₆ octahedron by replacing the A-site in KNN-based ceramics. Thanks to the higher c/a ratio and lower oxygen vacancy content are simultaneously obtained in 0.9KNN-0.1ST: 0.1Er ceramics. The effective energy storage density (W_rec) of 0.86 J/cm³, excellent near-infrared transmittance of 51.7% (1 100 nm) and strong green upconversion photoluminescence are achieved in this multifunctional ceramic. This study provides a solid basis for rare earth ions doped ferroelectric ceramics with tunable multifunctional properties and has significant potential for applications in optoelectronic devices.

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铒修饰knn基多功能陶瓷中抑制氧空位和扭转NbO6八面体的研究

如何通过简单的方法在一个铁电系统中获得高度可调的多功能性能，以满足先进电子元件的小型化、集成化和功能化要求，是一项挑战。为解决这一问题，本文制备了稀土铒（Er）调制的 0.9K0.5Na0.5NbO3-0.1Sr(1-x)ErxTi(1-x/4)O3, (0.9KNN-0.1ST: xEr) 透明-光致发光-铁电储能多功能陶瓷。系统研究了掺杂 Er 后晶格畸变和氧空位对光学和电学性能的影响。在基于 KNN 的陶瓷中，Er3+ 离子可以通过取代 A 位来引入 NbO6 八面体的大畸变。由于在 0.9KNN-0.1ST: 0.1Er 陶瓷中同时获得了较高的 c/a 比和较低的氧空位含量，因此有效储能密度（Wrec）在 0.9KNN-0.1ST: 0.1Er 陶瓷中得到了提高。这种多功能陶瓷的有效储能密度（Wrec）为 0.86 J/cm3，近红外透射率高达 51.7% (1 100 nm)，并能发出强烈的绿色上转换光致发光。这项研究为具有可调多功能特性的稀土离子掺杂铁电陶瓷奠定了坚实的基础，在光电器件中的应用潜力巨大。

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来源期刊

Journal of Materiomics Materials Science-Metals and Alloys

CiteScore

14.30

自引率

6.40%

发文量

331

审稿时长

37 days

期刊介绍： The Journal of Materiomics is a peer-reviewed open-access journal that aims to serve as a forum for the continuous dissemination of research within the field of materials science. It particularly emphasizes systematic studies on the relationships between composition, processing, structure, property, and performance of advanced materials. The journal is supported by the Chinese Ceramic Society and is indexed in SCIE and Scopus. It is commonly referred to as J Materiomics.