The geometric and electronic structures at the interface between iron phthalocyanine(FePc)and Si(110)surface are studied by ultraviolet photoelectron spectroscopy and density functional theory(DFT)calculation.After Fe...The geometric and electronic structures at the interface between iron phthalocyanine(FePc)and Si(110)surface are studied by ultraviolet photoelectron spectroscopy and density functional theory(DFT)calculation.After FePc is deposited on Si(110),the emission features are located at 2.56,4.90,7.90,10.88 eV below the Fermi level for monolayer and 2.73,4.90,7.74,10.52 eV below the Fermi level for multilayer.At the coverage of 1 ML,FePc molecules are adsorbed on the bridge site in a flat-lying geometry with a 2.17?separation between the molecule and the substrate.The molecular plane is bent due to the interaction between the adsorbate and the substrate.展开更多
Ultra-violet photoemission spectroscopy measurements for CO adsorption on the(2×2)-Cs precovered Ru(0001)surface were performed.The Cs 5p(5p3/2)level(Cs state)locates at 11.3 eV in binding energy for the(2×2...Ultra-violet photoemission spectroscopy measurements for CO adsorption on the(2×2)-Cs precovered Ru(0001)surface were performed.The Cs 5p(5p3/2)level(Cs state)locates at 11.3 eV in binding energy for the(2×2)-Cs overlayer on Ru(0001).Upon the CO adsorption,a new peak,which is associated with the Cs 5p state for the Cs adatoms influenced by the neighbouring CO adsorbed(the Cs+CO state),appears at the lower binding energy side of the Cs state.This new peak is at 10.8,eV for the CO saturation where the(2×2)-Cs+2CO compound layer is formed.This result gives clear evidence for local interaction of Cs and CO on the Ru(0001)surface.展开更多
基金by the National Natural Science Foundation of China under Grant No 10974172the Fundamental Research Funds for the Central Universities。
文摘The geometric and electronic structures at the interface between iron phthalocyanine(FePc)and Si(110)surface are studied by ultraviolet photoelectron spectroscopy and density functional theory(DFT)calculation.After FePc is deposited on Si(110),the emission features are located at 2.56,4.90,7.90,10.88 eV below the Fermi level for monolayer and 2.73,4.90,7.74,10.52 eV below the Fermi level for multilayer.At the coverage of 1 ML,FePc molecules are adsorbed on the bridge site in a flat-lying geometry with a 2.17?separation between the molecule and the substrate.The molecular plane is bent due to the interaction between the adsorbate and the substrate.
基金Supported by the National Natural Science Foundation of China under Grant Nos.19774047 and 19874053the National Hi-Tech Inertial Confinement Fusion Committee.
文摘Ultra-violet photoemission spectroscopy measurements for CO adsorption on the(2×2)-Cs precovered Ru(0001)surface were performed.The Cs 5p(5p3/2)level(Cs state)locates at 11.3 eV in binding energy for the(2×2)-Cs overlayer on Ru(0001).Upon the CO adsorption,a new peak,which is associated with the Cs 5p state for the Cs adatoms influenced by the neighbouring CO adsorbed(the Cs+CO state),appears at the lower binding energy side of the Cs state.This new peak is at 10.8,eV for the CO saturation where the(2×2)-Cs+2CO compound layer is formed.This result gives clear evidence for local interaction of Cs and CO on the Ru(0001)surface.
