光通信用无机Er-Yb合金纳米晶体的高效NIR-II发光

IF 9.4 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Research Pub Date : 2026-05-20 DOI:10.26599/nr.2026.94908846

Ruixiang Wu, Fengjie Guo, Zhiliang Han, Zixuan Wang, Peigeng Han, Bin Li, Rui Zhang, JunFeng Zhang, Xiangyang Miao, Chengbing Qin, Liantuan Xiao

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引用次数: 0

摘要

摘要：零维金属卤化物由于其独特的电子结构和迷人的光学特性，已成为一类很有前途的发光材料。研究了无机三元Cs3ErxYb1−xCl6纳米晶体（NCs）的光致发光特性。这些合金NCs发射双频近红外（NIR） PL，其特征是NIR- ii在1543 nm和NIR- i在987 nm左右发射，分别来自稀土Er3+和Yb3+离子。Cs3Er0.06Yb0.94Cl6 NCs表现出高效的NIR-II PL，量子产率为2.7%，寿命为157µs。NIR-II PL的增强可归因于激子的高度局域化、从Yb3+离子到Er3+离子的快速能量转移以及Er-Yb合金NCs非辐射缺陷态的钝化。考虑到NIR- ii PL对Er3+离子的良好穿透性，使用Cs3Er0.06Yb0.94Cl6 NCs制备的单组分近红外磷转换发光二极管（pc-LED）显示了其在光通信中的未来应用潜力。

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Efficient NIR-II luminescence of inorganic Er-Yb alloyed nanocrystals for optical communication

Abstract Zero-dimensional metal halides have emerged as a promising class of luminescent materials, attracting significant interest due to their unique electronic structures and fascinating optical characteristics. The photoluminescence (PL) properties of inorganic ternary Cs3ErxYb1−xCl6 nanocrystals (NCs) were investigated. These alloyed NCs emit dual-band near-infrared (NIR) PL, featuring a sharp NIR-II emission at 1543 nm alongside an NIR-I emission around 987 nm, which originate from the rare earth Er3+ and Yb3+ ions, respectively. Cs3Er0.06Yb0.94Cl6 NCs exhibit efficient NIR-II PL with a quantum yield of 2.7% and a lifetime of 157 µs. The enhanced NIR-II PL can be attributed to highly localized excitons, fast energy transfer from Yb3+ to Er3+ ions and passivation of nonradiative defect states in the Er-Yb alloyed NCs. Given their good penetrability of the NIR-II PL from Er3+ ions, a single-component NIR phosphor-converted light-emitting diode (pc-LED) fabricated using Cs3Er0.06Yb0.94Cl6 NCs demonstrates their potential for future applications in optical communication.

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来源期刊

Nano Research 化学-材料科学：综合

CiteScore

14.30

自引率

11.10%

发文量

2574

审稿时长

1.7 months

期刊介绍： Nano Research is a peer-reviewed, international and interdisciplinary research journal that focuses on all aspects of nanoscience and nanotechnology. It solicits submissions in various topical areas, from basic aspects of nanoscale materials to practical applications. The journal publishes articles on synthesis, characterization, and manipulation of nanomaterials; nanoscale physics, electrical transport, and quantum physics; scanning probe microscopy and spectroscopy; nanofluidics; nanosensors; nanoelectronics and molecular electronics; nano-optics, nano-optoelectronics, and nano-photonics; nanomagnetics; nanobiotechnology and nanomedicine; and nanoscale modeling and simulations. Nano Research offers readers a combination of authoritative and comprehensive Reviews, original cutting-edge research in Communication and Full Paper formats. The journal also prioritizes rapid review to ensure prompt publication.