In Situ Auger Electron Spectroscopy Study Of The Pentacene Film Grown On The Srtio_3(001) Surface

摘要

We have investigated the growth and photodecomposition of the pentacene ultrathin film grown on the TiO_2-terminated SrTi O_3(001) single crystal substrate by in situ Auger electron spectroscopy (AES) and ex situ atomic force microscopy (AFM). The careful analyses of AES and AFM data have revealed that the AES intensities of C(KLL) in the growth of the pentacene were to some extent larger than those in its photodecomposition, for the coverage of pentacene islands estimated by AFM. This result supports the existence of adsorbed-like pentacene precursors before the photodecomposition as was proposed in our previous report.