中国物理B ›› 2014, Vol. 23 ›› Issue (1): 17702-017702.doi: 10.1088/1674-1056/23/1/017702

所属专题: TOPICAL REVIEW — Magnetism, magnetic materials, and interdisciplinary research

• SPECIAL TOPIC --- Non-equilibrium phenomena in soft matters • 上一篇    下一篇

Energy band alignment at ferroelectric/electrode interface determined by photoelectron spectroscopy

陈峰a, 吴文彬a, 李舜怡b, Andreas Kleinb   

  1. a High Magnetic Field Laboratory, Chinese Academy of Sciences (CAS), and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China;
    b TechnischeUniversitt Darmstadt, Department of Materials and Earth Sciences, Petersenstraße 32, D-64287 Darmstadt, Germany
  • 收稿日期:2013-11-29 修回日期:2013-12-27 出版日期:2013-11-12 发布日期:2013-11-12
  • 基金资助:
    Project supported by the German Science Foundation (DFG) within the Collaborative Research Center SFB 595 (Electrical Fatigue of Functional Materials), the National Natural Science Foundation of China (Grant Nos. 11274287, 11174001, and 11204313), and the National Basic Research Program of China (Grant No. 2012CB927402).

Energy band alignment at ferroelectric/electrode interface determined by photoelectron spectroscopy

Chen Feng (陈峰)a, Wu Wen-Bin (吴文彬)a, Li Shun-Yi (李舜怡)b, Andreas Kleinb   

  1. a High Magnetic Field Laboratory, Chinese Academy of Sciences (CAS), and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China;
    b TechnischeUniversitt Darmstadt, Department of Materials and Earth Sciences, Petersenstraße 32, D-64287 Darmstadt, Germany
  • Received:2013-11-29 Revised:2013-12-27 Online:2013-11-12 Published:2013-11-12
  • Contact: Chen Feng E-mail:fchen@hmfl.ac.cn
  • Supported by:
    Project supported by the German Science Foundation (DFG) within the Collaborative Research Center SFB 595 (Electrical Fatigue of Functional Materials), the National Natural Science Foundation of China (Grant Nos. 11274287, 11174001, and 11204313), and the National Basic Research Program of China (Grant No. 2012CB927402).

摘要: 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.

关键词: ferroelectric, band alignment, Schottky barrier, X-ray photoelectron spectroscopy

Abstract: 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.

Key words: ferroelectric, band alignment, Schottky barrier, X-ray photoelectron spectroscopy

中图分类号:  (Pb(Zr,Ti)O3-based films)

  • 77.55.fg
73.30.+y (Surface double layers, Schottky barriers, and work functions) 79.60.Jv (Interfaces; heterostructures; nanostructures) 77.80.Fm (Switching phenomena)