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Charge Transfer in an Ordered AgCu2S4-MBA System Based on Surface-Enhanced Raman Scattering
Zhang, X. Y.; Han, D. L.; Pang, Z. Y.; Sun, Y. S.; Wang, Y. X.; Zhang, Y. J.; Yang, J. H.; Chen, L.
2018
发表期刊Journal of Physical Chemistry C
ISSN1932-7447
卷号122期号:10页码:5599-5605
摘要In this study, we introduced an ordered metal-semiconductor-molecular system and investigated the surface-enhanced Raman scattering (SERS) effect. The carrier distribution and density can be easily monitored by changing the thickness of the Cu2S film on the surface of the Ag monolayer under different laser excitations. Meanwhile, different laser wavelengths were selected for investigating the enhancement mechanism of the system based on the viewpoint of the number of carriers and changes in the excitation energy. During this process, we found that the SERS peaks located at 1586 cm(-1) changed significantly because the intensity can be "borrowed" from exited transition and the molecule-to-semiconductor transition. In combination with the theories of Albrecht and Lombardi, this phenomenon was analyzed in detail, and the experimental results and theoretical research match well. This research regarding the semiconductor-based SERS substrates will expand the basic theory of SERS enhancement and provide a theoretical basis for optical and biological applications.
关键词photocatalytic activity nanocap arrays visible-light spectroscopy sers nanoparticles Chemistry Science & Technology - Other Topics Materials Science
DOI10.1021/acs.jpcc.8b00701
收录类别SCI ; EI
引用统计
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/60927
专题中国科学院长春光学精密机械与物理研究所
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GB/T 7714
Zhang, X. Y.,Han, D. L.,Pang, Z. Y.,et al. Charge Transfer in an Ordered AgCu2S4-MBA System Based on Surface-Enhanced Raman Scattering[J]. Journal of Physical Chemistry C,2018,122(10):5599-5605.
APA Zhang, X. Y..,Han, D. L..,Pang, Z. Y..,Sun, Y. S..,Wang, Y. X..,...&Chen, L..(2018).Charge Transfer in an Ordered AgCu2S4-MBA System Based on Surface-Enhanced Raman Scattering.Journal of Physical Chemistry C,122(10),5599-5605.
MLA Zhang, X. Y.,et al."Charge Transfer in an Ordered AgCu2S4-MBA System Based on Surface-Enhanced Raman Scattering".Journal of Physical Chemistry C 122.10(2018):5599-5605.
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