基于半导体纳米结构的表面增强拉曼散射传感器研究进展。

IF 2.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Sirsendu Ghosal, Sanju Nandi, P K Giri
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引用次数: 0

摘要

表面增强拉曼散射(SERS)已成为一种变革性的分析工具,其广泛的应用吸引了越来越多的兴趣。SERS活性材料的开发现在是一个中心研究领域,刺激了各种类型SERS基板的创新。虽然贵金属基衬底仍被广泛研究,但半导体基非金属衬底由于其独特的优势而受到关注:优异的化学稳定性,高载流子迁移率,生物相容性和精确的制造控制。然而,它们普遍较弱的增强效应限制了它们的效用,强调了提高其SERS活性的策略的必要性。了解半导体基SERS衬底的复杂增强机制对于设计具有类金属增强因子(EFs)的下一代材料至关重要。电荷转移、局部表面等离子体共振和光子效应的相互作用使得增强过程本身具有挑战性。因此,寻找具有令人兴奋的光电性能的新材料,以及更多创新的解决方案来提高其SERS灵敏度,将继续增长。在这篇综述中,我们探讨了半导体基SERS衬底的最新进展,剖析了复杂的增强机制和各种修饰策略,旨在实现类似金属的高电磁场。我们全面分析了用于提高半导体衬底SERS性能的方法,并总结了推进这一动态领域的潜在未来方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Recent advances in semiconductor nanostructure-based surface-enhanced Raman scattering sensors.

Surface-enhanced Raman scattering (SERS) has become a transformative analytical tool, attracting growing interest for its wide-ranging applications. The development of SERS-active materials is now a central research area, spurring innovation in various types of SERS substrates. While noble metal-based substrates remain extensively studied, semiconductor-based, non-metal substrates are garnering attention due to their unique advantages: excellent chemical stability, high carrier mobility, biocompatibility, and precise fabrication control. However, their generally weaker enhancement effects limit their utility, underscoring the need for strategies to boost their SERS activity. Understanding the complex enhancement mechanisms in semiconductor-based SERS substrates is critical for designing next-generation materials with metal-like enhancement factors (EFs). The interplay of charge transfer, localized surface plasmon resonance, and photonic effects makes the enhancement process inherently challenging to unravel. Therefore, the search for new materials with exciting optoelectronic properties, as well as more innovative solutions to increase their SERS sensitivity, continues to grow. In this review, we explore the latest advancements in semiconductor-based SERS substrates, dissecting the complex enhancement mechanisms and various modification strategies aimed at achieving metal-like high EFs. We present a comprehensive analysis of the methods used to improve the SERS performance of semiconductor substrates and conclude with potential future directions for advancing this dynamic field.

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来源期刊
Nanotechnology
Nanotechnology 工程技术-材料科学:综合
CiteScore
7.10
自引率
5.70%
发文量
820
审稿时长
2.5 months
期刊介绍: The journal aims to publish papers at the forefront of nanoscale science and technology and especially those of an interdisciplinary nature. Here, nanotechnology is taken to include the ability to individually address, control, and modify structures, materials and devices with nanometre precision, and the synthesis of such structures into systems of micro- and macroscopic dimensions such as MEMS based devices. It encompasses the understanding of the fundamental physics, chemistry, biology and technology of nanometre-scale objects and how such objects can be used in the areas of computation, sensors, nanostructured materials and nano-biotechnology.
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