Regensburg 2016 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 16: Surface State Spectroscopy II

O 16.4: Vortrag

Montag, 7. März 2016, 15:45–16:00, H4

X-ray spectroscopic studies of the electronic structure of chromium based p-type transparent conducting oxides — •Emma Norton^1,2, Leo Farrell^1,2, Stephen Callaghan¹, Cormac McGuinness¹, Igor Shvets^1,2, and Karsten Fleischer^1,2 — ¹School of Physics, Trinity College, University of Dublin, Dublin 2, Ireland — ²Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN)

The valence band structure of p-type transparent oxides - crystalline Mg_xCr_2−xO₃ and nanocrystalline Cu_xCrO_y- is analysed as a function of incoming photon energy. Comparisons with crystalline CuCrO₂:Mg are made, the best performing p-type transparent conducting oxide to date. The valence band of both p-type transparent conducting oxides show striking similarities to measurements on crystalline CuCrO₂ with all films showing that chromium states compose the top of the valence band, highlighting the important role of the Cr-O octahedra on the electronic structure.