Polymer Functionalized Antimony Sulfide Quantum Dots for Broadband Optical Limiting
收藏科学数据银行2024-09-12 更新2026-04-23 收录
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资源简介：
The rapid development of Zero-dimensional quantum dots-based nanotechnology motivates the design and synthesis of novel nano-functional materials for optoelectronic and photonic devices in recent years. Antimony sulfide (Sb2S3) quantum dots (SQDs), with an average diameter of 3.22 nm, were prepared via a top-down liquid ultrasonication exfoliation technique. A highly soluble poly(N-vinylcarbazole)-covalently functionalized SQDs (SQDs-PVK) was synthesized in situ by reversible addition fragmentation chain transfer polymerization, and embedded into non-optically active poly(methylmethacrylate) (PMMA) matrix giving the SQDs-PVK/PMMA film. The annealed SQDs-PVK/PMMA film showed exceptional nonlinear optical performance, with large nonlinear absorption coefficients of 713.71 cm/GW at 532 nm and 913.60 cm/GW at 1064 nm, and small limiting thresholds of 1.44 J/cm2 at 532 nm and 1.08 J/cm2 at 1064 nm. These advantages make SQDs–PVK one of the promising candidates for a broadband optical limiter in both the near-infrared and visible ranges.
提供机构：
Guangwei Li; Haidong He; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences; Ningning Dong; Key Laboratory for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology; Minhang Hospital, Fudan University
创建时间：
2024-09-04
