Study of experimental electronic structure of bidimensional semiconductor red bronze KMoO.

X ray photoemission spectra measurements were carried out to elucidate the valence band picture and bonding characters of the two dimensional semiconductor red bronze KMoO. The valence band spectrum is similar to that of measurement of UPS, and in agreement with the molecular orbital model presented by Travaglini. Asymmetric and broadening line shape of O-1s means the presence of several inequivalent bonds of oxygen. Mo-3d core-level spectrum reveals that there are two kinds of valence states of molybdenum (Mo, Mo), and that its average valence state is +5.42. [ABSTRACT FROM AUTHOR]