Spectral absorption control of femtosecond laser-treated metals and application in solar-thermal devices
作者机构：The Institute of OpticsUniversity of RochesterRochesterNY 14627USA These authors contributed equally:Sohail A.JalilBo Lai
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2020年第9卷第1期
页 面：1851-1859页
核心收录：
学科分类：07[理学] 070302[理学-分析化学] 0703[理学-化学]
基 金：supported by grants from the Bill&Melinda Gates Foundation(OPP1157723) the US Army Research Office(W911NF-15-1-0319) the National Science Foundation(1701163&1722169)
摘 要：Direct femtosecond(fs)laser processing is a maskless fabrication technique that can effectively modify the optical,electrical,mechanical,and tribological properties of materials for a wide range of potential ***,the eventual implementation of fs-laser-treated surfaces in actual devices remains challenging because it is difficult to precisely control the surface *** studies of the morphological control of fs-laser-processed surfaces mostly focused on enhancing the uniformity of periodic ***,guided by the plasmon hybridisation model,we control the morphology of surface nanostructures to obtain more control over spectral light *** experimentally demonstrate spectral control of a variety of metals[copper(Cu),aluminium(Al),steel and tungsten(W)],resulting in the creation of broadband light absorbers and selective solar absorbers(SSAs).For the first time,we demonstrate that fs-laser-produced surfaces can be used as high-temperature *** show that a tungsten selective solar absorber(W-SSA)exhibits excellent performance as a high-temperature solar *** integrated into a solar thermoelectric generation(TEG)device,W-SSA provides a 130%increase in solar TEG efficiency compared to untreated W,which is commonly used as an intrinsic selective light absorber.
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