Lead-free piezoelectric potassium sodium niobate optoelectronic multifunctional material and preparation method thereof

Abstract

The invention relates to a lead-free piezoelectric potassium sodium niobate optoelectronic multifunctional material and a preparation method thereof and belongs to the technical field of luminescent materials. According to the invention, the fluorescence property and the piezoelectric property of a lead-free piezoelectric potassium sodium niobate material are remarkably increased by utilizing the synergistic combination effect between rare earth ion and metal ion. The multifunctional material disclosed by the invention comprises the following components in percentage by mass: (K0.5Na0.5) (1-y-x) MyLnxNb (1-y) TiyO3, wherein the Ln is selected from at least one of Sm, Pr and Eu; M is one or more than one ion in metal elements Ca, Sr and Ba; x is greater than 0 and less than or equal to 0.05; y is greater than 0 and less than or equal to 0.2. The multifunctional material disclosed by the invention is formed by mixing a certain amount of rare earth element into (K0.5Na0.5) NbO3 (KNN) host material with a perovskite structure; in the meantime, a ferroelectric material MTiO3(M is Ca, Sr and Ba) with the same structure is added to form a solid solution together with the KNN to ensure that the material has excellent luminescence property; therefore, the multifunctional material has a blue light-excited photoluminescence characteristic and has the piezoelectric property and the ferroelectric property per se at the same time and has potential application prospect in the field of optoelectronic integration devices.

Description

technical field

[0001] The invention specifically relates to a novel lead-free piezoelectric potassium sodium niobate-based optical-electrical multifunctional material and a preparation method thereof, belonging to the field of information functional ceramic materials. Background technique

[0002] With the rapid development of the new generation of electronic information technology, components with information functional materials as the core are developing in the direction of miniaturization, integration, multi-function and intelligence. Correspondingly, information functional materials are facing new challenges, and material researchers are urgently required to actively explore and expand their new functions while in-depth research and continuous improvement of the inherent physical properties of materials, that is, to develop the multifunctional properties of materials, thereby broadening their applications. field. Piezoelectric and ferroelectric materials, as typical m...

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