Abstract
Abstract
The widespread use of light emitting diode (LED) based devices makes us inevitably exposed to a blue-enriched environment and brings a potential risk to our eyes. Developing a blue-light-blocking filter with narrow absorbing band, so as to only block harmful blue light (415–455 nm) is highly expected. Here, we create a blue-light-blocking film, consisting of a transparent medium embedded with plasmonic nanoparticles (NPs) that selectively absorb harmful blue light. We present the optimal design based on Mie theory by comprehensive scanning of the parametric space for the NPs, and experimentally demonstrate this concept with a blue-light-blocking film made of silver NPs in a polymer matrix by a simple solvothermal method. For the case of the silver NPs content ∼0.16 wt%, the film can block harmful blue light ∼65% at λ
0 ≈ 430 nm, while maintaining high transparency for the long wavelength light (λ
0 > 500 nm). We also demonstrate that it is possible to correct color cast by optimizing the design of the plasmonic NPs with sharp absorption resonances at yellow waveband. This method has attractive features including simplicity, low cost, non-toxic and scalability to large sizes, which makes it beneficial for blue-light-blocking applications.
Funder
Program for Innovative Research Team (in Science and Technology) in University of Henan Province
National Natural Science Foundation of China
Special plan for basic research of key scientific research projects in Colleges and universities in Henan Province
Innovation and Entrepreneurship Training Programme for University Students
Natural Science Foundations of Henan Province
Graduate Education Innovation Program fund of Zhengzhou University of Aeronautics
Subject
Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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