Unlocking the key role of electric field stimulus in ferroelectric photochromic phosphor for partitioned optical storage and encrypted transmission

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-03-14 DOI:10.1016/j.cej.2025.161568

Jiao Cui , Yingqiu Xu , Linghui Shen , Shicheng Ding , Tong Wei , Chao Gan , Guoliang Yuan , Dongling Geng , Junming Liu , Liwei Wu , Yingdong Han

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引用次数: 0

Abstract

Ferroelectric photochromic phosphors (FPPs) are regarded as one of the most promising information storage media. Recently, rapid advancement has been achieved, however, the coupling mechanism between the inherent ferroelectric and photochromic (PC)/up-conversion luminescence (UCL) effect remains ambiguous. Here, the key role of the electric field on the PC/UCL performances in a new Ho³⁺/Yb³⁺ co-doped CaBi₈Ti₇O₂₇ FPPs was unlocked. The PC/UCL performances can be delicately tuned by the external electric field. Compared to the absence of the electric field or weak electric field related parameters (electric field strength, temperature, and time), strong electric field related parameters can induce greater PC/UCL modulation contrasts. This phenomenon can be attributed to the built-in electric field (E_int) generated by the combined actions of domain reorientation and charge accumulation, which effectively drives the separation of electrons and holes and promotes the formation of color centers. Based on precise control of PC effect and UCL performance by electric field, a coding disk designed with this material can achieve information partitioned storage and encrypted transmission. This work provides insights for the development and design of innovative multifunctional optical storage devices.

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揭示电场刺激在铁电光致变色荧光粉分区光存储和加密传输中的关键作用

铁电光致变色荧光粉（FPPs）被认为是最有前途的信息存储介质之一。近年来，铁电特性和光致变色(PC)/上转换发光（UCL）效应之间的耦合机制仍不明确。本文揭示了电场对新型Ho3+/Yb3+共掺杂cabi8ti7027 FPPs中PC/UCL性能的关键作用。PC/UCL的性能可以通过外电场精细调节。与没有电场或弱电场相关参数（电场强度、温度和时间）相比，强电场相关参数可以诱导更大的PC/UCL调制对比。这种现象可归因于畴重定向和电荷积累共同作用产生的内嵌电场（Eint），有效地驱动了电子与空穴的分离，促进了色心的形成。利用该材料设计的编码盘通过电场对PC效应和UCL性能的精确控制，实现了信息的分区存储和加密传输。这项工作为创新多功能光存储器件的开发和设计提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.