Materials and design of nanostructured broadband light absorbers for advanced light-to-heat conversion,Nanoscale

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Materials and design of nanostructured broadband light absorbers for advanced light-to-heat conversion
Nanoscale ( IF 5.8 ) Pub Date : 2018-11-01 00:00:00 , DOI: 10.1039/c8nr06024j
Jong Uk Kim _{1,

2,

3,

4} , Sori Lee _{1,

2,

3,

4} , Seung Ji Kang _{1,

2,

3,

4} , Tae-il Kim _{1,

2,

3,

4}

Affiliation

Light-to-heat conversion systems have been attracting growing research interest in the last few decades, due to their highly intriguing photothermal properties and their wide applications ranging from biomedical applications to solar energy harvesting to mechanical actuators. In general, because the light-to-heat conversion efficiency depends strongly on the absorbing material, significant efforts have been focused on fabricating broadband light absorbers. However, there are several challenges associated with the design and fabrication of light absorbers, such as minimizing heat loss, and optimizing the broadband light absorption and omnidirectional light absorption. Thus, the rational design of enhanced light absorbers is critical to achieve efficient light absorption over a broad wavelength range. In this paper, we introduce the basic theory of light absorption and heat transfer, then summarize fundamental understanding of representative light-to-heat conversion agents including carbon-based, semiconductor-based and plasmonic metal-based materials and structures, and highlight state-of-the-art structural designs towards the development of broadband light absorbers. In addition, the practical applications of these materials and designs are also discussed.

中文翻译：

用于高级光热转换的纳米结构宽带吸光体的材料和设计

在过去的几十年中，光热转换系统吸引了越来越多的研究兴趣，这是因为它们具有极高的吸引力，其光热特性及其从生物医学应用到太阳能收集再到机械执行器的广泛应用。通常，由于光热转换效率很大程度上取决于吸收材料，因此在制造宽带光吸收器上已经集中了很大的努力。然而，与光吸收器的设计和制造相关的一些挑战，例如最小化热损失，以及优化宽带光吸收和全向光吸收。因此，增强型光吸收器的合理设计对于在较宽的波长范围内实现有效的光吸收至关重要。在本文中，我们介绍了光吸收和热传递的基本理论，然后总结了对代表性的光热转换剂（包括碳基，半导体基和等离子体金属基材料和结构）的基本理解，并重点介绍了面向宽带光吸收器发展的艺术结构设计。此外，还讨论了这些材料和设计的实际应用。

更新日期：2018-11-01

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