Surface electron accumulation and the charge neutrality level in In2O3.

Journal article

High-resolution x-ray photoemission spectroscopy, infrared reflectivity and Hall effect measurements, combined with surface space-charge calculations, are used to show that electron accumulation occurs at the surface of undoped single-crystalline In2O3. From a combination of measurements performed on undoped and heavily Sn-doped samples, the charge neutrality level is shown to lie approximately 0.4 eV above the conduction band minimum in In2O3, explaining the electron accumulation at the surf...

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Authors: King, P; Veal, T; Payne, D; Bourlange, A; Egdell, R

• Publication status: Published
• Journal: Physical Review Letters
• Volume: 101
• Issue: 11
• Pages: 116808
• Publication date: 2008-09-01
• DOI: 10.1103/physrevlett.101.116808
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English