Liu Chongming, Zhu Zhicheng, Pan Kaibo, Fu Yuan, Zhang Kai, Yang Bai
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 130012, Changchun, China.
Light Sci Appl. 2023 Nov 1;12(1):261. doi: 10.1038/s41377-023-01306-z.
Perovskite nanocrystals (PNCs)/polymer nanocomposites can combine the advantages of each other, but extremely few works can achieve the fabrication of PNCs/polymer nanocomposites by bulk polymerization. We originally adopt a two-type ligand strategy to fabricate bulk PNCs/polystyrene (PS) nanocomposites, including a new type of synthetic polymerizable ligand. The CsPbCl PNCs/PS nanocomposites show extremely high transparency even the doping content up to 5 wt%. The high transparency can be ascribed to the Rayleigh scattering as the PNCs distribute uniformly without obvious aggregation. Based on this behavior, we first exploit the potential of PNCs to serve as scatters inside light guided plate (LGP), whose surface illuminance and uniformity can be improved, and this new kind of LGP is compatible with the advanced liquid crystal display technology. Thanks to the facile composition adjustment of CsPbClBr (1 ≤ x ≤ 3) PNCs, the Rayleigh scattering behavior can also be adjusted so as to the performance of LGP. The best-performing 5.0-inch LGP based on CsPbClBr PNCs/PS nanocomposites shows 20.5 times higher illuminance and 1.8 times higher uniformity in display than the control. The LGP based on PNCs/PS nanocomposite exhibits an enormous potential in commercialization no matter based on itself or combined with the LGP-related technology.
钙钛矿纳米晶体（PNCs）/聚合物纳米复合材料可以相互结合优点，但极少有工作能够通过本体聚合实现PNCs/聚合物纳米复合材料的制备。我们最初采用双配体策略来制备块状PNCs/聚苯乙烯（PS）纳米复合材料，其中包括一种新型的可聚合合成配体。即使掺杂含量高达5 wt%，CsPbCl PNCs/PS纳米复合材料仍显示出极高的透明度。这种高透明度可归因于瑞利散射，因为PNCs均匀分布且无明显聚集。基于此行为，我们首次开发了PNCs作为导光板（LGP）内部散射体的潜力，其表面照度和均匀性得以提高，并且这种新型LGP与先进的液晶显示技术兼容。得益于CsPbClBr（1≤x≤3）PNCs的成分轻松调整，瑞利散射行为也可随之调整，进而调整LGP的性能。基于CsPbClBr PNCs/PS纳米复合材料的性能最佳的5.0英寸LGP在显示时的照度比对照高20.5倍，均匀性高1.8倍。基于PNCs/PS纳米复合材料的LGP无论基于自身还是与LGP相关技术结合，都在商业化方面展现出巨大潜力。
