The study on the work function of CdZnTe with different surface states by synchrotron radiation photoemission spectroscopy

2009 ◽  
Vol 106 (5) ◽  
pp. 053714 ◽  
Author(s):  
Gangqiang Zha ◽  
Wanqi Jie ◽  
Xuxu Bai ◽  
Tao Wang ◽  
Li Fu ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Work Function ◽  
Surface States ◽  
Photoemission Spectroscopy ◽  
Synchrotron Radiation Photoemission

The research of CdZnTe (111)B surface with synchrotron radiation photoemission spectroscopy

2009 ◽  
Vol 24 (5) ◽  
pp. 1639-1641 ◽  
Author(s):  
Gangqiang Zha ◽  
Wanqi Jie ◽  
Tingting Tan ◽  
XuXu Bai ◽  
Li Fu ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Work Function ◽  
Photoemission Spectroscopy ◽  
Low Energy Electron Diffraction ◽  
Local Reconstruction ◽  
Atomic Structures ◽  
Low Energy Electron ◽  
Synchrotron Radiation Photoemission ◽  
The Ideal

The clean and ordered surfaces of CdZnTe (111)B grown by the Bridgman method were obtained by Ar ion bombardment and thermal annealing in situ in an ultrahigh vacuum. The surface atomic structures of CdZnTe (111)B after annealing at different temperature were observed by low-energy electron diffraction (LEED). The valence band and work function of CdZnTe (111)B surfaces were determined by synchrotron radiation photoemission spectroscopy. The order of CdZnTe (111)B after annealing at 350 °C will worsen, and the (111)B-(2 × 2) local reconstruction will be formed. The work function of CdZnTe (111)B after annealing at 350 °C is 0.8 eV higher than that of CdZnTe (111)B-(1 × 1), and the local reconstruction may be induced by Te adatoms on top of the ideal truncation.

Characterization of air-exposure/activation cycles of porous Ti–Zr–V getter film using synchrotron radiation photoemission spectroscopy

2009 ◽  
Vol 517 (13) ◽  
pp. 3672-3676 ◽  
Author(s):  
Chien-Cheng Li ◽  
Jow-Lay Huang ◽  
Ran-Jin Lin ◽  
Ding-Fwu Lii ◽  
Chia-Hao Chen ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Photoemission Spectroscopy ◽  
Air Exposure ◽  
Porous Ti ◽  
Synchrotron Radiation Photoemission

THE Fe ULTRATHIN FILM ON ZnO(000-1) SURFACE: GROWTH, STRUCTURE, AND INTERACTION

2008 ◽  
Vol 15 (03) ◽  
pp. 295-300 ◽  
Author(s):  
GUO-DONG WANG ◽  
FA-QIANG XU ◽  
WANG ZHANG ◽  
WEN-HUA ZHANG ◽  
ZONG-MU LI
Keyword(s):  
Electronic Structure ◽  
Synchrotron Radiation ◽  
Work Function ◽  
Metallic Iron ◽  
Turning Point ◽  
Growth Structure ◽  
Dipole Layer ◽  
Fermi Edge ◽  
Low Coverage ◽  
Synchrotron Radiation Photoemission

We report the electronic structure of the interface of the ultrafilm Fe film with the O -terminated ZnO (000-1) polar surface studied by synchrotron radiation photoemission. It was found that Fe grows in a Stranski–Krastanov mode. The turning point of the growth mode was at the Fe coverage of ~2 Å. At low coverage, about 1 ML (monolayer) of iron (ca. 1.5 Å) was oxidized by the terminative oxygen atoms on the ZnO (000-1) surface. Analysis of the valence band and the Fe 3 p photoemission spectra indicates that below 2 Å coverage, only Fe 2+ species could be detected at the Fe / ZnO interface, after that the formation of a metallic iron overlayer was observed. A sharp Fermi edge appeared at 5.1 Å coverage, indicating the formation of the bulk metallic Fe film. Furthermore, work function of the sample decreased to a minimum of 4.5 eV at 0.2 Å Fe , and then to 4.9 eV with the formation of a dipole layer at the interface.

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