Deep-Ultraviolet Plasmon Resonances in Al-Al2O3@C Core–Shell Nanoparticles Prepared via Laser Ablation in Liquid,ACS Applied Electronic Materials

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Deep-Ultraviolet Plasmon Resonances in Al-Al2O3@C Core–Shell Nanoparticles Prepared via Laser Ablation in Liquid
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-02-20 , DOI: 10.1021/acsaelm.9b00851
Yi Wei ₁ , Yu Gu ₁ , Mingyou Zhao ₁ , Yuhang Dong ₁ , Jun Chen ₁ , Haibo Zeng ₁

Affiliation

We developed a convenient, facile, low-cost, and “green” method to synthesize nanoparticles (NPs) with deep-ultraviolet localized surface plasmon resonances (LSPRs) based on the laser ablation of an aluminum target in liquid. The nanoparticles had an Al-Al₂O₃@C core–shell structure, and the LSPR peak ranged from 240 to 250 nm with the increasing laser radiation time. It is found that the LSPR peak of the NPs is related to the presence of Al₂O₃ based on experimental characterization and theoretical simulation. The carbon shell can reduce the oxidation of Al nanoparticles and enhance the stability, which is significant for achieving the deep-ultraviolet LSPR. Moreover, we demonstrated the enhancement of the blue fluorescence intensity from CsPbBr_3–xCl_x by Al-Al₂O₃@C NPs due to the stronger excitations for CsPbBr_3–xCl_x by the enhancement of localized electromagnetic field from LSPR.

中文翻译：

在液体中通过激光烧蚀制备的Al-Al ₂ O ₃ @C核壳纳米粒子中的深紫外等离子体共振

我们开发了一种方便，便捷，低成本且“绿色”的方法，该方法可基于铝靶材在液体中的激光烧蚀来合成具有深紫外线局部表面等离振子共振（LSPR）的纳米颗粒（NP）。纳米粒子具有Al-Al ₂ O ₃ @C核-壳结构，并且随着激光辐射时间的增加，LSPR峰的范围从240到250 nm。发现NPs的LSPR峰与Al ₂ O ₃的存在有关基于实验表征和理论模拟。碳壳可以减少Al纳米颗粒的氧化并增强稳定性，这对于实现深紫外LSPR具有重要意义。此外，我们发现从CsPbBr蓝色荧光强度的增强_{3- X}氯_X由铝铝₂ ö ₃ @C的NP由于为强激励CsPbBr _{3- X}氯_X通过局部电磁场的从LSPR增强。

更新日期：2020-02-20

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