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Energy band alignment at ferroelectric/electrode interface determined by photoelectron spectroscopy
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The most important interface-related quantities determined by band alignment are the barrier heights for charge transport, given by the Fermi level position at the interface. Taking Pb(Zr,Ti)O3(PZT) as a typical ferroelectric material and applying X-ray photoelectron spectroscopy(XPS), we briefly review the interface formation and barrier heights at the interfaces between PZT and electrodes made of various metals or conductive oxides. Polarization dependence of the Schottky barrier height at a ferroelectric/electrode interface is also directly observed using XPS. 相似文献
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