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wo357026239(金币+1): 谢谢参与
wo357026239: 金币+5 2012-04-28 09:31:01
看看以下这几篇文献吧。(１) Malard, L. M.; Pimenta, M. A.; Dresselhaus, G.; Dresselhaus, M. S. Phys. Rep. 2009, 473 (5-6), 51–87.
（２）Perspectives on Carbon Nanotubes and Graphene Raman Spectroscopy
下面是文献中解释的话。ＰＳ：对单层比较有效，其实三层以上就没意义了。
While 1-LG exhibits a single very intense
Lorentzian peak, fitting the 2-LG G′-band requires
four Lorentzians, which are related to the four possible
double resonance scattering processes, rather than to one
possible process for 1-LG, resulting from the splitting of
the π electronic structure of graphene when a second
layer is added. With an increase in the number of layers,
the number of DR scattering processes increases, and
eventually the line shape converges to graphite, where
only two peaks are observed |
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