Band Bending in Mg-Colored and O2-Activated Ultrathin MgO(001) Films
作者： B. Lépine , G. Jézéquel , P. Schieffer , T. Jaouen , B. Hildebrand
关键词: Auger 、 Electronic band 、 Analytical chemistry 、 Catalysis 、 Oxide 、 Materials science 、 Band bending 、 Ultraviolet
摘要: Ultrathin MgO films grown on Ag(001) have been investigated using X-ray and ultraviolet photoemission spectroscopies for oxide successively exposed to Mg O2 flux. Studying work functions layer-resolved Auger shifts allows us keep track of band profiles from the surface interface reveal charge-transfer mechanisms underlying controlled creation Mg-induced color centers catalytic enhancement activation. Our results demonstrate that one can intimately probe properties metal-supported ultrathin by studying electronic alignment at interfaces.
acs.org
sci-hub.se 参考文章(30)
Anna Maria Ferrari, Gianfranco Pacchioni, Surface reactivity of MgO oxygen vacancies: electrostatic mechanisms in the formation of O2− and CO− species Journal of Chemical Physics. ,vol. 107, pp. 2066- 2078 ,(1997) , 10.1063/1.474557
Martin Sterrer, Esther Fischbach, Markus Heyde, Niklas Nilius, Hans-Peter Rust, Thomas Risse, Hans-Joachim Freund, Electron Paramagnetic Resonance and Scanning Tunneling Microscopy Investigations on the Formation of F+ and F0 Color Centers on the Surface of Thin MgO(001) Films Journal of Physical Chemistry B. ,vol. 110, pp. 8665- 8669 ,(2006) , 10.1021/JP060546T
L.N. Kantorovich, M.J. Gillan, Adsorption of atomic and molecular oxygen on the MgO (001) surface Surface Science. ,vol. 374, pp. 373- 386 ,(1997) , 10.1016/S0039-6028(96)01244-7
Livia Giordano, Umberto Martinez, Gianfranco Pacchioni, Matthew Watkins, Alexander L. Shluger, F and F+ Centers on MgO/Ag(100) or MgO/Mo(100) ultrathin films: Are they stable? Journal of Physical Chemistry C. ,vol. 112, pp. 3857- 3865 ,(2008) , 10.1021/JP7108016
L.H. Tjeng, A.R. Vos, G.A. Sawatzky, Electronic structure of MgO studied by angle-resolved ultraviolet photoelectron spectroscopy Surface Science. ,vol. 235, pp. 269- 279 ,(1990) , 10.1016/0039-6028(90)90802-F
T. Jaouen, G. Jézéquel, G. Delhaye, B. Lépine, P. Turban, P. Schieffer, Work function shifts, Schottky barrier height, and ionization potential determination of thin MgO films on Ag(001) Applied Physics Letters. ,vol. 97, pp. 232104- ,(2010) , 10.1063/1.3525159
Stefania Benedetti, Fernando Stavale, Sergio Valeri, Claudine Noguera, Hans-Joachim Freund, Jacek Goniakowski, Niklas Nilius, Steering the Growth of Metal Ad-particles via Interface Interactions Between a MgO Thin Film and a Mo Support Advanced Functional Materials. ,vol. 23, pp. 75- 80 ,(2013) , 10.1002/ADFM.201201502
T. Jaouen, S. Tricot, G. Delhaye, B. Lépine, D. Sébilleau, G. Jézéquel, P. Schieffer, Layer-Resolved Study of Mg Atom Incorporation at theMgO/Ag(001)Buried Interface Physical Review Letters. ,vol. 111, pp. 027601- 027601 ,(2013) , 10.1103/PHYSREVLETT.111.027601
T. Jaouen, E. Razzoli, C. Didiot, G. Monney, B. Hildebrand, F. Vanini, M. Muntwiler, P. Aebi, Excited states at interfaces of a metal-supported ultrathin oxide film Physical Review B. ,vol. 91, pp. 161410- ,(2015) , 10.1103/PHYSREVB.91.161410
S. Abbet, A. Sanchez, U. Heiz, W.-D. Schneider, A. M. Ferrari, G. Pacchioni, N. Rösch, Acetylene cyclotrimerization on supported size-selected Pd-n clusters (1 <= n <= 30): one atom is enough! Journal of the American Chemical Society. ,vol. 122, pp. 3453- 3457 ,(2000) , 10.1021/JA9922476