Perovskite Quantum-Dot-Doped PMMA Matrix Enables Natural Light Anticounterfeiting and Passive Displays,ACS Applied Nano Materials

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Perovskite Quantum-Dot-Doped PMMA Matrix Enables Natural Light Anticounterfeiting and Passive Displays
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-11-09 , DOI: 10.1021/acsanm.3c03979
Ying Chen _{1,

2} , Zhen Yu Zhang _{1,

3} , Guo Ping Wang _{1,

3}

Affiliation

Lead halide perovskite quantum dots (PQDs) are widely regarded as promising materials for various display and lighting applications due to their exceptional optical properties, including high photoluminescence quantum yields and saturated color purity. However, the full potential of industrial and daily applications of PQDs in large-area and highly stable displays has not yet been adequately exploited. In this study, we achieved natural light anticounterfeiting (visible under UV excitation) and passive displays by uniformly and nondestructively incorporating precrystallized colloidal PQDs into a poly(methyl methacrylate) (PMMA) matrix. PMMA long chains provide structural support and passivation for PQDs. In instances where surface organic chains are disrupted or removed by external stimuli, these long chains play a pivotal role in preventing deformations and aggregations, consequently enhancing the resistance to water, heat, and photoirradiation stimuli. The encapsulation of PQDs with sufficient PMMA long chains allows for the retention of fluorescence without any deterioration for over 6 weeks. Furthermore, the flexibility and mechanical properties of the PMMA matrix enable a variety of processing on these PQD–PMMA membranes, resulting in diverse display applications behaving with both practical and aesthetic advantages. Our research findings open up new possibilities for expanding the range of display applications for PQDs.

中文翻译：

钙钛矿量子点掺杂 PMMA 矩阵可实现自然光防伪和无源显示

卤化铅钙钛矿量子点（PQD）因其卓越的光学特性（包括高光致发光量子产率和饱和色纯度）而被广泛认为是各种显示和照明应用的有前途的材料。然而，PQD 在大面积和高度稳定的显示器中的工业和日常应用的全部潜力尚未得到充分开发。在这项研究中，我们通过将预结晶胶体 PQD 均匀且无损地掺入聚甲基丙烯酸甲酯 (PMMA) 基质中，实现了自然光防伪（在紫外线激发下可见）和被动显示。PMMA 长链为 PQD 提供结构支撑和钝化。在表面有机链被外部刺激破坏或去除的情况下，这些长链在防止变形和聚集方面发挥着关键作用，从而增强了对水、热和光照射刺激的抵抗力。用足够的 PMMA 长链封装 PQD 可以保留荧光超过 6 周而不发生任何恶化。此外，PMMA 基质的灵活性和机械性能使得这些 PQD-PMMA 膜能够进行多种加工，从而实现具有实用性和美观性优势的多种显示应用。我们的研究结果为扩大 PQD 显示应用范围开辟了新的可能性。

更新日期：2023-11-09

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