Facile synthesis of Cu2S nanoarchitectures in application of surface enhanced Raman scattering

Shih-Yu Fu; Hao-Hsuan Chang; Yu-Kuei Hsu; Yan-Gu Lin

doi:10.1117/12.2059523

10 September 2014 Facile synthesis of Cu₂S nanoarchitectures in application of surface enhanced Raman scattering

Shih-Yu Fu, Hao-Hsuan Chang, Yu-Kuei Hsu, Yan-Gu Lin

Proceedings Volume 9161, Nanophotonic Materials XI; 916108 (2014) https://doi.org/10.1117/12.2059523
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

Surface plasmon resonance (SPR) is one of the main mechanisms of Surface Raman Enhance Scattering (SERS) and it will depend on the morphology and free carrier density of substrates, in many of discussions have been proved. Recently, the semiconductor copper(I) sulphide (Cu2S), the natural p-type semiconductor, exhibits remarkable SPR in the nearinfrared region^[1] and can be regards as best candidate for active SERS substrates. In this report, the successive ionic layer adsorption and reaction (SILAR) process will be used to synthesis Cu₂S nanostructures^[2] from ZnO nanorods as template deposited by electrochemical reaction. To further manipulate the different carrier densities of Cu₂S nanostructuress, the adjustment of Cu vacancy in Cu₂S can be accomplished by thermal processes under noble gas. Taking 4-aminothiophenol (4-ATP) as probe molecule to measure the SERS performance by Cu₂S nanostructures made in this fabrication and also examines the effect on SERS by adjusting Cu vacancy under an excited wavelength of 632.8 nm and light power of 15 mW. In fact, the modulation of Cu vacancy will positively correlate to the SPR frequencies and so could get the best enhancement factor under the limited condition of excited source. Therefore, our results could provide a new opportunity to use SERS to explore the molecule-semiconductor interaction, a fundamental but essential question for designing novel devices.

Citation Download Citation

Shih-Yu Fu, Hao-Hsuan Chang, Yu-Kuei Hsu, and Yan-Gu Lin "Facile synthesis of Cu₂S nanoarchitectures in application of surface enhanced Raman scattering", Proc. SPIE 9161, Nanophotonic Materials XI, 916108 (10 September 2014); https://doi.org/10.1117/12.2059523

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