A shift about 0.3eV to higher binding energy is reported in the valence band and Cls core level of Kx C_(60)(x<0.2).Analysis shows that the result could not be interpreted by a mixture of C_(60) and K3 C_(60).A dul...A shift about 0.3eV to higher binding energy is reported in the valence band and Cls core level of Kx C_(60)(x<0.2).Analysis shows that the result could not be interpreted by a mixture of C_(60) and K3 C_(60).A dulite K-doped phase and fermi level pinning near the lowest unoccupied molecular orbital derived band caused by K-doping are proposed.展开更多
Photoemission spectra of vacuum deposited K-incorporated C_(60)-K_(x)C_(60)(x≈6),before and after exposure to oxygen,show that the interaction between oxygen and potassium forms an overlayer of 40 A K-O complex with ...Photoemission spectra of vacuum deposited K-incorporated C_(60)-K_(x)C_(60)(x≈6),before and after exposure to oxygen,show that the interaction between oxygen and potassium forms an overlayer of 40 A K-O complex with stoichiometry near to that of potassium peroxide K_(2)O_(2) on the surface.In contrary to the oxidation of potassium film,no potassium oxide K_(2)O has been observed.展开更多
基金Supported in Part by the National Natural Science Foundation of China with Grant No.191174003。
文摘A shift about 0.3eV to higher binding energy is reported in the valence band and Cls core level of Kx C_(60)(x<0.2).Analysis shows that the result could not be interpreted by a mixture of C_(60) and K3 C_(60).A dulite K-doped phase and fermi level pinning near the lowest unoccupied molecular orbital derived band caused by K-doping are proposed.
基金Supported by the National Natural Science Foundation of China with Grant No.19174003。
文摘Photoemission spectra of vacuum deposited K-incorporated C_(60)-K_(x)C_(60)(x≈6),before and after exposure to oxygen,show that the interaction between oxygen and potassium forms an overlayer of 40 A K-O complex with stoichiometry near to that of potassium peroxide K_(2)O_(2) on the surface.In contrary to the oxidation of potassium film,no potassium oxide K_(2)O has been observed.
