The doping mechanism of fully suspended nanoporous graphene with alkali metals unveils the charge redistribution between the donors and graphene. The evolution of the electronic charge induced in the graphene upper Dirac cone has been correlated with the electron–phonon interaction by employing complementary electronic and vibrational spectroscopic techniques in ultra high vacuum ambient. K and Cs doping induces a significant rigid band shift and Dirac cone filling correlated with the neat formation of a π*-plasmon mode and a clear signature of electron–phonon interaction in the Raman spectra, while Na doping slightly influences the graphene electronic and vibrational response, fostered by adatom Na clustering.

中文翻译：

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吸附在纳米多孔石墨烯上的碱金属：电荷转移和金属相


完全悬浮的纳米多孔石墨烯与碱金属的掺杂机制揭示了供体和石墨烯之间的电荷重新分布。通过在超高真空环境中采用互补电子和振动光谱技术，石墨烯上狄拉克锥中感应的电子电荷的演化与电子-声子相互作用相关联。 K 和 Cs 掺杂引起显着的刚性带移和狄拉克锥填充，与 π*-等离子体模式的整齐形成以及拉曼光谱中电子-声子相互作用的清晰特征相关，而 Na 掺杂轻微影响石墨烯的电子和振动由吸附原子 Na 聚集促进的响应。