Yi Ningbo, Guan Xue, Chen Xiaoting, Xie Luojia, Zhang Nan, Liao Jinfeng, Su Long, Wu Yancheng, Gan Feng, Chang Guoqiang, Tian Liyong, Zhang Yangfan
College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China.
Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen 518055, China.
Polymers (Basel). 2024 Sep 11;16(18):2563. doi: 10.3390/polym16182563.
Perovskite is an advanced optoelectronic semiconductor material that has garnered significant attention in recent years. However, its drawback lies in its environmental instability, limiting its practical applications. To tackle this issue, this research delved into the idea of creating a space-confined structure and used electrospinning to produce a film of perovskite nanocomposite fibers. By effectively encapsulating perovskite nanocrystals into a polymer matrix, the perovskite could be shielded from water and oxygen in the environment, thereby reducing the likelihood of perovskite decomposition and enhancing the stability of its structure and properties. This study examined the influence of material composition and the spinning process on the nanofiber structure to create good spatial confinement. This strategy resulted in a high photoluminescence quantum yield of over 80% and a long-term environmental stability of as long as 1000 h over 90% of the original PLQY. By harnessing the flexibility of the composite fibers, this study demonstrated the potential applications and performance of this nanocomposite film in flexible quantum fluorescence conversion for LED applications.
钙钛矿是一种先进的光电子半导体材料，近年来受到了广泛关注。然而，其缺点在于环境稳定性差，限制了其实际应用。为了解决这个问题，本研究深入探讨了创建空间受限结构的想法，并采用静电纺丝法制备了钙钛矿纳米复合纤维薄膜。通过将钙钛矿纳米晶体有效地封装在聚合物基质中，钙钛矿可以免受环境中的水和氧气的影响，从而降低钙钛矿分解的可能性，并增强其结构和性能的稳定性。本研究考察了材料组成和纺丝工艺对纳米纤维结构的影响，以实现良好的空间限制。该策略实现了超过80%的高光致发光量子产率，以及在长达1000小时内保持超过90%的原始光致发光量子产率的长期环境稳定性。通过利用复合纤维的柔韧性，本研究展示了这种纳米复合薄膜在用于发光二极管应用的柔性量子荧光转换中的潜在应用和性能。
