Hydrogen Sensing Using Thin-Film Perfect Light Absorber

doi:10.1021/acsphotonics.9b00764

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	Hydrogen Sensing Using Thin-Film Perfect Light Absorber
	M.ElKabbash; K.V.Sreekanth; Y.Alapan; M.Kim; J.Cole
	2019
发表期刊	Acs Photonics
ISSN	2330-4022
卷号	6 期号:8 页码:1889-1894
摘要	Hydrogen sensing is important in many industrial, biomedical, environmental, and energy applications. Realizing a practical, reliable, and inexpensive hydrogen sensor, however, is an ongoing challenge. Here, we demonstrate hydrogen sensing based on an optically active metal-dielectric-metal (MDM) perfect light absorber. The cavity enables perfect broadband light absorption (>99.999%) with optical losses localized in an ultrathin palladium (Pd) layer. Upon exposure to hydrogen, the Pd layer forms a hydride which actively shifts the cavity minimum reflectance wavelength by similar to 60 nm for a hydrogen concentration of 4%. The sensor enjoys extremely high figure of merit. The ease of fabrication, large area, and high sensitivity of our sensor make it an attractive and practical option, especially for miniaturized hydrogen sensors vital for medical and food safety applications.
关键词	thin films,Fabry-Perot cavity,interference,gas sensing,hydrogen,sensing,nanophotonics,dielectric function,absorption,palladium
DOI	10.1021/acsphotonics.9b00764
URL	查看原文
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63401
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	M.ElKabbash,K.V.Sreekanth,Y.Alapan,et al. Hydrogen Sensing Using Thin-Film Perfect Light Absorber[J]. Acs Photonics,2019,6(8):1889-1894.
APA	M.ElKabbash,K.V.Sreekanth,Y.Alapan,M.Kim,&J.Cole.(2019).Hydrogen Sensing Using Thin-Film Perfect Light Absorber.Acs Photonics,6(8),1889-1894.
MLA	M.ElKabbash,et al."Hydrogen Sensing Using Thin-Film Perfect Light Absorber".Acs Photonics 6.8(2019):1889-1894.

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