Electron band bending of polar, semipolar and non-polar GaN surfaces

0462542 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Bartoš, Igor - Romanyuk, Olexandr - Houdková, Jana - Paskov, P.P. - Paskova, T. - Jiříček, Petr
Electron band bending of polar, semipolar and non-polar GaN surfaces.
Journal of Applied Physics. Roč. 119, č. 10 (2016), 1-7, č. článku 105303. ISSN 0021-8979. E-ISSN 1089-7550
Grant CEP: GA ČR GA15-01687S
Grant ostatní: AVČR(CZ) M100101201
Institucionální podpora: RVO:68378271
Klíčová slova: GaN * XPS * band bending
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.068, rok: 2016

The Ga 3d core level peak shifts have been used for band bending determination of polar, non-polar and semipolar GaN. Small band bending magnitudes and also relatively small difference between the band bendings of the surfaces with opposite polarity have been found. These results point to the presence of electron surface states of different amounts and types on surfaces of different polarity and confirm the important role of the electron surface states in compensation of the bound surface polarity charges in wurtzite GaN crystals.
Trvalý link: http://hdl.handle.net/11104/0261980