Improvement in near-infrared absorbance attenuation by using nanometer black silicon composited with gold nanoparticles

IF 4.703 3区材料科学

Nanoscale Research Letters Pub Date : 2023-06-03 DOI:10.1186/s11671-023-03847-z

Guanyu Mi, Jian Lv, Longcheng Que, Cheng Tan, Jian Huang, Zhongyuan Liu, Lintong Zhao

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Abstract

In order to solve the problem of near-infrared (NIR) absorbance attenuation of silicon, a method of preparing gold nanoparticles (AuNPs) on the micro–nano-structured black silicon (B-Si) is proposed. In this study, the local surface plasmon resonance (LSPR) of AuNPs excited by a light field is used to achieve B-Si materials with broad spectrum and high absorption. The results show that nanometer B-Si composited with 25-nm AuNPs has an average absorption of 98.6% in the spectral range of 400–1100 nm and 97.8% in the spectral range of 1100–2500 nm. Compared with ordinary B-Si, the absorption spectrum is broadened from 400–1100 nm to 400–2500 nm, and the absorption is increased from 90.1 to 97.8% at 1100–2500 nm. It is possible to use the B-Si materials in the field of NIR-enhanced photoelectric detection and micro-optical night vision imaging due to the low cost, high compatibility, and reliability.

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纳米黑硅与纳米金复合材料对近红外吸收衰减的改善

为了解决硅的近红外(NIR)吸收衰减问题，提出了一种在微纳米结构黑硅(B-Si)上制备金纳米粒子(AuNPs)的方法。本研究利用光场激发AuNPs的局部表面等离子体共振(LSPR)获得广谱高吸收的B-Si材料。结果表明，与25 nm AuNPs复合的纳米B-Si在400 ~ 1100 nm光谱范围内平均吸收率为98.6%，在1100 ~ 2500 nm光谱范围内平均吸收率为97.8%。与普通B-Si相比，吸收光谱从400-1100 nm展宽到400-2500 nm，在1100-2500 nm处吸收率从90.1%提高到97.8%。B-Si材料具有低成本、高兼容性和高可靠性等优点，有望应用于nir增强光电探测和微光夜视成像领域。

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来源期刊

Nanoscale Research Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

15.00

自引率

0.00%

发文量

110

审稿时长

2.5 months

期刊介绍： Nanoscale Research Letters (NRL) provides an interdisciplinary forum for communication of scientific and technological advances in the creation and use of objects at the nanometer scale. NRL is the first nanotechnology journal from a major publisher to be published with Open Access.