| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Surface Enhanced Raman Scattering Characterization of the ZnO Films Modified with Silver Quantum Dot |
| ZHANG Li-Sheng**, FANG Yan, WANG Pei-Jie |
Beijing Key Lab of Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048
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ZHANG Li-Sheng, FANG Yan, WANG Pei-Jie 2012 Chin. Phys. Lett. 29 114210 |
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Abstract ZnO thin films are grown on monocrystalline silicon by laser molecular-beam epitaxy. Silver quantum dot arrays as surface enhanced Raman scattering substrates are prepared on the surface of ZnO films by magnetron sputtering. Surface enhanced Raman spectra of ZnO films modified with silver quantum dots are recorded. Surface enhanced Raman spectra image and 378 cm?1 vibration intensity mapping image of Raman peak of ZnO thin films modified with silver quantum dots are obtained. It is indicated that Raman intensity is enhanced immensely on the surface of ZnO films nearby silver quantum dots. It is well known that Raman signals of nano films, nano particles or nano wires are very weak, which limits the applied range of Raman on the nano materials. It is an efficient method that expends Raman field of applications on nano scale materials by modifying with silver quantum dots on the surface.
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Received: 01 August 2012
Published: 28 November 2012
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