Surface-enhanced Raman scattering effect of gold nanoparticle arrays: The influence of annealing temperature,excitation power and array thickness |
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| Authors: | GQ Liu ZQ Liu YH Chen K Huang L Li FL Tang LX Gong Y Hu XN Zhang |
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| Institution: | 1. College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China;2. Department of Physics and National Laboratory of Solid State Microstructure, Nanjing University, Nanjing 210093, China;3. Key Laboratory of Optoelectronic and Telecommunication of Jiangxi, Nanchang 330022, China |
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| Abstract: | Gold nanoparticle arrays are fabricated for surface-enhanced Raman scattering (SERS) and the effect of the annealing temperature, the thickness of nanoparticle array and the exciting power on the SERS signals are investigated. The particle distribution and particle size are dense and uniform on the glass substrate when the 10 nm gold film was annealed at 250 °C and strong SERS signals for Rhodamine 6G were achieved via a 532 nm excitation with a 10 mW power. The SERS signal at 1650 cm−1 is enhanced more than 10 times as compared to that of the gold film without annealing. The strong SERS behavior of gold nanoparticle arrays may broaden the SERS applications in biomedical and analytical chemistry. |
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| Keywords: | Surface-enhanced Raman scattering Optical material and property Metal forming and shaping |
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