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Multicolor luminescence and triple-mode emission of simple CaTiO3:Pr3+,Er3+ particles for advanced anti-counterfeiting
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-05-28 , DOI: 10.1039/d0qi00462f Zhenbin Wang 1, 2, 3, 4, 5 , Pengxiang Pei 1, 2, 3, 4, 5 , Dongjie Bai 1, 2, 3, 4, 5 , Shanshan Zhao 1, 2, 3, 4, 5 , Xinyu Ma 1, 2, 3, 4, 5 , Weisheng Liu 1, 2, 3, 4, 5
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-05-28 , DOI: 10.1039/d0qi00462f Zhenbin Wang 1, 2, 3, 4, 5 , Pengxiang Pei 1, 2, 3, 4, 5 , Dongjie Bai 1, 2, 3, 4, 5 , Shanshan Zhao 1, 2, 3, 4, 5 , Xinyu Ma 1, 2, 3, 4, 5 , Weisheng Liu 1, 2, 3, 4, 5
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Lanthanide-based luminescent anticounterfeiting materials are widely used in various kinds of products. At present, the conventional lanthanide-based luminescent anticounterfeiting technique is based on photoluminescence from ultraviolet light irradiation, resulting in the decreased efficiency of anticounterfeiting applications. In this work, we realized three luminescence modes in a perovskite structure (CaTiO3:Pr3+,Er3+), in which the excitation-wavelength-dependent photoluminescence (PL) emission, afterglow and upconversion luminescence (UCL) of a doped lanthanide were first presented. Upon ultraviolet excitation, the color of the PL emission can be finely tuned from red to orange, yellow and green by increasing the excitation wavelength from 365 nm to 380 nm. The doped lanthanide emits an intense green color upon illumination with a 980 nm excitation source and a long persisting red color (612 nm) when a UV lamp at 365 nm excitation is switched off. Based on the above luminescence modes of CaTiO3:Pr3+,Er3+, a multilevel anticounterfeiting quick response code (QR code) was developed. The QR code readily integrates the advantages of the excitation wavelength-dependent PL emissions, a strong red afterglow and sensitive excitation power-dependent UCL emissions in one overall device. The presented multilevel anticounterfeiting strategies may inspire the resolution of counterfeit issues in various fields.
中文翻译：
简单CaTiO3：Pr3 +，Er3 +颗粒的多色发光和三模发射，可用于高级防伪
镧系基发光防伪材料广泛用于各种产品中。当前，常规的基于镧系元素的发光防伪技术基于紫外线照射的光致发光，导致防伪应用的效率降低。在这项工作中，我们实现了钙钛矿结构中的三种发光模式（CaTiO 3：Pr 3+，Er 3+），其中首先介绍了掺杂镧系元素的依赖于激发波长的光致发光（PL）发射，余辉和上转换发光（UCL）。在紫外线激发下，通过将激发波长从365 nm增加到380 nm，可以将PL发射的颜色从红色微调为橙色，黄色和绿色。掺杂的镧系元素在用980 nm激发源照射后会发出强烈的绿色，而在365 nm激发下的紫外灯关闭时会发出持久的红色（612 nm）。基于以上CaTiO 3：Pr 3+，Er 3+的发光模式，开发了一种多级防伪快速响应代码（QR code）。QR码可以轻松地将激励波长相关的PL发射，强红色余辉和敏感的激励功率相关的UCL发射的优点整合到一个整体设备中。提出的多级防伪策略可能会激发解决假冒问题的各个领域。
更新日期：2020-06-30
中文翻译：
简单CaTiO3：Pr3 +，Er3 +颗粒的多色发光和三模发射，可用于高级防伪
镧系基发光防伪材料广泛用于各种产品中。当前，常规的基于镧系元素的发光防伪技术基于紫外线照射的光致发光，导致防伪应用的效率降低。在这项工作中，我们实现了钙钛矿结构中的三种发光模式（CaTiO 3：Pr 3+，Er 3+），其中首先介绍了掺杂镧系元素的依赖于激发波长的光致发光（PL）发射，余辉和上转换发光（UCL）。在紫外线激发下，通过将激发波长从365 nm增加到380 nm，可以将PL发射的颜色从红色微调为橙色，黄色和绿色。掺杂的镧系元素在用980 nm激发源照射后会发出强烈的绿色，而在365 nm激发下的紫外灯关闭时会发出持久的红色（612 nm）。基于以上CaTiO 3：Pr 3+，Er 3+的发光模式，开发了一种多级防伪快速响应代码（QR code）。QR码可以轻松地将激励波长相关的PL发射，强红色余辉和敏感的激励功率相关的UCL发射的优点整合到一个整体设备中。提出的多级防伪策略可能会激发解决假冒问题的各个领域。
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