SiO2 fluorescent nanofiber film incorporating Eu3+-doped for inorganic red light-emitting diode

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-28 DOI:10.1016/j.optmat.2025.117009

Leixuan Li, Yanxin Wang, Wei Xing, Xiaotong Zhang, Hanwen Wang, Huiyi Wu, Jian Wang, Linjun Huang, Jianguo Tang

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Abstract

Recently, the application of rare earth elements in LEDs has attracted widespread attention. This article conducts in-depth research on rare earth fluorescent nanofiber membrane materials. Firstly, Eu³⁺, 2-thenoyltrifluomacetonate (tta), and 1,10-phenanthroline (Phen) undergo a complexation reaction to form the Eu(tta)₃Phen complexes. The highly efficient fluorescent hybrid material SiO₂@Eu(tta)₃Phen prepared by using a straightforward doping method to mix the Eu(tta)₃phen complexes with synthetic silica nanoparticles. Fluorescent nanofiber membranes that emit uniform red light was prepared by loading SiO₂@Eu(tta)₃Phen onto PVA nanofiber membrane (PNM) and SiO₂ nanofiber film (SNF) by filtration. After calculation, the loading amount of FSNF and FPNM were 55.6 % and 38.4 %, respectively. It was found that SiO₂ fluorescent nanofiber film (FSNF) had better fluorescence performance than PVA fluorescent nanofiber membrane (FPNM) under excitation at 384 nm wavelength. FSNF and FPNM were applied to LED components, both of which exhibited excellent fluorescence. The chromaticity coordinate (x, y) of FSNF is (0.6545, 0.3418), the correlated color temperature (CCT) is 1000K. The chromaticity coordinate (x, y) of FPNM is (0.6496, 0.3396), with a correlated color temperature (CCT) of 1000K. However, FSNF has a significant improvement in the persistence of ultraviolet irradiation compared to FPNM. These findings demonstrate that the developed FSNF have tremendous potential in white LEDs.

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无机红色发光二极管用掺杂Eu3+的SiO2荧光纳米纤维薄膜

近年来，稀土元素在led中的应用引起了广泛关注。本文对稀土荧光纳米纤维膜材料进行了深入的研究。首先，Eu3+、2-甲基三氟丙酮酸（tta）和1,10-菲罗啉（Phen）发生络合反应，形成Eu(tta)3Phen配合物。采用直接掺杂的方法将Eu(tta)3Phen配合物与合成的二氧化硅纳米颗粒混合，制备了高效荧光杂化材料SiO2@Eu(tta)3Phen。通过过滤，将SiO2@Eu(tta)3Phen负载在PVA纳米纤维膜（PNM）和SiO2纳米纤维膜（SNF）上，制备了能发出均匀红光的荧光纳米纤维膜。经计算，FSNF和FPNM的加载量分别为55.6%和38.4%。在384 nm激发下，SiO2荧光纳米纤维膜（FSNF）的荧光性能优于PVA荧光纳米纤维膜（FPNM）。将FSNF和FPNM应用于LED器件，均表现出优异的荧光性能。FSNF的色度坐标（x, y）为（0.6545,0.3418），相关色温（CCT）为1000K。FPNM的色度坐标（x, y）为（0.6496,0.3396），相关色温（CCT）为1000K。然而，与FPNM相比，FSNF在紫外线照射持久性方面有显着改善。这些发现表明，所开发的FSNF在白光led中具有巨大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.