RF sputtered amorphous chalcogenide thin films for surface enhanced infrared absorption spectroscopy
RF sputtered amorphous chalcogenide thin films for surface enhanced infrared absorption spectroscopy
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DOI：
10.1364/ome.3.002112
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发表时间：
2013-12
影响因子：
2.8
通讯作者：
F. Verger;V. Nazabal;F. Colas;P. Němec;C. Cardinaud;E. Baudet;R. Chahal;E. Rinnert;K. Boukerma;Isabelle Péron;S. Députier;M. Guilloux-Viry;J. Guin;H. Lhermite;A. Moreac;C. Compère;B. Bureau
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文献类型：
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作者：
F. Verger;V. Nazabal;F. Colas;P. Němec;C. Cardinaud;E. Baudet;R. Chahal;E. Rinnert;K. Boukerma;Isabelle Péron;S. Députier;M. Guilloux-Viry;J. Guin;H. Lhermite;A. Moreac;C. Compère;B. Bureau
这项研究的主要目标是开发红外透明薄膜材料，通过表面等离子体效应使金属纳米粒子附近的有机化合物具有强红外吸收。为了开发这些光学微传感器，制造并充分表征了金纳米粒子和硫族化物平面波导相结合的异质结构。采用射频磁控溅射技术制备了单质As2S3和Ge25Sb10Se65非晶硫系薄膜。为了在硫族化物平面波导上制造金纳米颗粒，采用了直流溅射。使用各种技术对制造的单层或异质结构进行表征，以研究沉积参数的影响。金纳米粒子通过 4-硝基苯硫酚的自组装单层进行功能化。最后，测量并分析了在Au/Ge-Sb-Se薄膜异质结构上自组装的4-硝基苯硫酚的表面增强红外吸收光谱。该光学组件为检测 1336 cm−1 处 4-硝基苯硫酚的 NO2 对称伸缩振动带提供了约 24 的增强因子。
The primary objective of this study is the development of transparent thin film materials in the IR enabling strong infrared absorption of organic compounds in the vicinity of metal nanoparticles by the surface plasmon effect. For developing these optical micro-sensors, hetero-structures combining gold nanoparticles and chalcogenide planar waveguides are fabricated and adequately characterized. Single As2S3 and Ge25Sb10Se65 amorphous chalcogenide thin films are prepared by radio-frequency magnetron sputtering. For the fabrication of gold nanoparticles on a chalcogenide planar waveguide, direct current sputtering is employed. Fabricated single layers or hetero-structures are characterized using various techniques to investigate the influence of deposition parameters. The nanoparticles of gold are functionalized by a self-assembled monolayer of 4-nitrothiophenol. Finally, the surface enhanced infrared absorption spectra of 4-nitrothiophenol self-assembled on fabricated Au/Ge-Sb-Se thin films hetero-structures are measured and analyzed. This optical component presents a ~24 enhancement factor for the detection of NO2 symmetric stretching vibration band of 4-nitrothiophenol at 1336 cm−1.