PL EN


Preferences help
enabled [disable] Abstract
Number of results
2017 | 132 | 2 | 351-353
Article title

Modification of Electronic Structure of n-GaN(0001) Surface by N⁺-Ion Bombardment

Content
Title variants
Languages of publication
EN
Abstracts
EN
The electronic structure of n-type GaN(0001) surface and its modification by N⁺ ion bombardment are presented in this report. The studies were carried out in situ in ultrahigh vacuum by ultraviolet photoelectron spectroscopy, X-ray photoelectron spectroscopy, and low-energy electron diffraction. Low-energy N⁺ ion bombardment, which was done using an ion gun at an energy of 200 eV, leads to nitriding of the surface. The process changes the surface stoichiometry and, consequently, provides formation of a disordered altered GaN layer. The calculated electron affinity of the clean n-GaN surface of 3.4 eV and band bending of 0.2 eV became changed after bombardment to 2.9 eV and 0.8 eV, respectively. The obtained difference in valence band maximum between the clean sample and the bombarded one was 0.6 eV.
Keywords
EN
Contributors
author
  • Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, Wrocław, Poland
author
  • Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, Wrocław, Poland
author
  • Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, Wrocław, Poland
References
  • [1] A. Khan, Q. Chen, M.S. Shur, B.T. Dermott, J.A. Higgins, J. Burm, W.J. Schaff, L.F. Eastman, Solid-State Electron. 41, 1555 (1997), doi: 10.1016/S0038-1101(97)00104-4
  • [2] S.J. Pearton, F. Ren, Adv. Mater. 12, 1571 (2000), doi: 10.1002/1521-4095(200011)12:21<1571::AID-ADMA1571>3.0.CO;2-T
  • [3] M. Shur, R. Gaska, A. Khan, Mater. Sci. Forum 353-356, 807 (2001), doi: 10.4028/www.scientific.net/MSF.353-356.807
  • [4] A.R. Smith, R.M. Feenstra, D.W. Greve, M.S. Shin, M. Skowronski, J. Neugebauer, J.E. Northrup, J. Vac. Sci. Technol. B 16, 2242 (1998), doi: 10.1116/1.590156
  • [5] M. Grodzicki, P. Mazur, S. Zuber, J. Brona, A. Ciszewski, Appl. Surf. Sci. 304, 20 (2014), doi: 10.1016/j.apsusc.2013.11.146
  • [6] M. Grodzicki, P. Mazur, J. Pers, J. Brona, S. Zuber, A. Ciszewski, Appl. Phys. A 120, 1443 (2015), doi: 10.1007/s00339-015-9331-9
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv132n2p37kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.