用于照明和显示器的刚性二硅酸锂玻璃陶瓷中的 CsPbBr3/Cs4PbBr6 量子点,ACS Applied Nano Materials

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用于照明和显示器的刚性二硅酸锂玻璃陶瓷中的 CsPbBr3/Cs4PbBr6 量子点
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-10-11 , DOI: 10.1021/acsanm.3c03812
Cong He ₁ , Chunwen Ye ₁ , Meng Wu ₁ , Shiwei Yang ₁ , Herui Zhao ₁ , Yiping Wu ₁ , Yanjie Zhang ₁

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近年来，分子式为Cs ₄ PbX ₆和CsPbX ₃ (X = I、Br、Cl)的零维量子点(QD)出现，成为光电子领域的下一代功能材料。然而，CsPbX ₃和Cs ₄ PbX ₆量子点从胶体溶液中分离时不稳定，更难以耐受热和水的侵蚀。在此，焦硅酸锂玻璃陶瓷是一种出色的牙科修复材料，具有优异的机械性能和良好的半透明度，已被用作刚性铠装，以保持 CsPbBr 3 /Cs 4 _PbBr 6 _QD免受_破坏性环境影响。值得注意的是，即使在高温（600℃）下，二硅酸锂玻璃陶瓷也能有效阻止量子点的聚集和进一步生长，而二硅酸锂玻璃陶瓷中量子点的平均粒径仅为~3.3 nm。600℃制备的CsPbBr 3 /Cs 4 PbBr 6 量子点玻璃微晶在~520 nm处表现出强烈的绿光发射，发射强度大大增强，是500℃制备的样品_的~ _5.1倍_。有趣的是，将所制备的CsPbBr ₃ /Cs ₄ PbBr ₆量子点玻璃微晶浸入水中72小时后出现异常发光增强（~195％）。超稳定CsPbBr ₃ /Cs ₄ PbBr ₆量子点玻璃微晶在照明和显示领域与传统无机荧光粉类似，表现出巨大的潜力。

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CsPbBr3/Cs4PbBr6 Quantum Dots in Rigid Lithium Disilicate Glass Ceramics for Lighting and Displays

Zero-dimensional quantum dots (QDs) with formulas of Cs₄PbX₆ and CsPbX₃ (X = I, Br, Cl) have emerged in recent years for next-generation functional materials in optoelectronics fields. However, CsPbX₃ and Cs₄PbX₆ QDs are unstable when separated from colloidal solution, still less enduring thermal and water attack. Herein, lithium disilicate glass ceramics, a fantastic dental restorative material with excellent mechanical properties and good semitransparency, have been used as the rigid armor to keep CsPbBr₃/Cs₄PbBr₆ QDs away from destructive environmental influences. Notably, lithium disilicate glass ceramics can effectively prevent the aggregation and further growth of QDs even at a high calcination temperature (600 °C), while the average particle sizes of the QDs in lithium disilicate glass ceramic are only ∼3.3 nm. The CsPbBr₃/Cs₄PbBr₆ quantum dot glass microcrystalline prepared at 600 °C exhibits intense green emission at ∼520 nm with a greatly enhanced emission intensity of ∼5.1 times that of the sample prepared at 500 °C. Interestingly, the abnormal luminescence enhancement (∼195%) appeared after the as-prepared CsPbBr₃/Cs₄PbBr₆ quantum dot glass microcrystalline was immersed in water for 72 h. The ultrastable CsPbBr₃/Cs₄PbBr₆ QDs glass microcrystalline exhibits great potential in lighting and displays fields similar to traditional inorganic phosphors.

更新日期：2023-10-11

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