Realizing Red Mechanoluminescence of ZnS: Mn2+ Through Ferromagnetic Coupling,Advanced Functional Materials

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Realizing Red Mechanoluminescence of ZnS: Mn2+ Through Ferromagnetic Coupling
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2024-02-08 , DOI: 10.1002/adfm.202314422
Hongzhen Liu ₁ , Yuantian Zheng ₂ , Shengqiang Liu ₁ , Jing Zhao ₁ , Zhen Song ₁ , Dengfeng Peng ₂ , Quanlin Liu ₁

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Self-recoverable mechanoluminescence (ML) is becoming a novel technology widely used in the fields of sensing, display, and artificial intelligence. The dominant ML material, ZnS: Mn²⁺, is reported to solely present a yellow emission color, which limits the applications of self-recoverable ML materials to a large extent. Herein, an effective strategy to extend the ML emission range of ZnS: Mn²⁺ by the ferromagnetic coupling of Mn²⁺ ions are reported. Under the thermal carbon-reduction atmosphere (TCRA), the emission ranges of ML, photoluminescence (PL), and persistent luminescence spectra of ZnS: Mn²⁺ phosphors are all successfully broadened from yellow to red. Furthermore, as for the PL and ML intensities of ZnS: Mn²⁺, they are intensified to 1.76 and 3.23 folds larger under the TCRA treatment than those in pure nitrogen, respectively. Various spectra and magnetic test results reveal that the red emission bands of ZnS: Mn²⁺ @TCRA phosphors originate from the ferromagnetic coupling of Mn²⁺ ions. This study is the first to realize strong red emission and tunable multicolor luminescence in the conventional ZnS-based phosphors, which introduces opportunities for discovering the multiband emissions of Mn²⁺ ion in other compounds. Brightly multicolored ZnS: xMn²⁺ @TCRA elastic films have been fabricated to demonstrate their anti-counterfeiting and security applications.

中文翻译：

通过铁磁耦合实现 ZnS: Mn2+ 的红色机械发光

自恢复机械发光（ML）正在成为一种广泛应用于传感、显示和人工智能领域的新技术。据报道，主要的ML材料ZnS: Mn ²⁺ 仅呈现黄色发射颜色，这在很大程度上限制了自恢复ML材料的应用。本文报道了一种通过 Mn ²⁺ 离子的铁磁耦合来扩展 ZnS: Mn ²⁺ ML 发射范围的有效策略。在热碳还原气氛（TCRA）下，ZnS:Mn ²⁺ 荧光粉的ML、光致发光（PL）和持久发光光谱的发射范围均成功从黄色拓宽到红色。此外，ZnS:Mn ²⁺ 的PL和ML强度在TCRA处理下分别比纯氮中增强1.76倍和3.23倍。各种光谱和磁性测试结果表明，ZnS: Mn ²⁺ @TCRA 荧光粉的红色发射带源自 Mn ²⁺ 离子的铁磁耦合。该研究首次在传统ZnS基荧光粉中实现了强红光发射和可调谐多色发光，为发现其他化合物中Mn ²⁺ 离子的多波段发射提供了机会。明亮多彩的 ZnS: xMn ²⁺ @TCRA 弹性薄膜已被制造出来，以展示其防伪和安全应用。

更新日期：2024-02-08

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