Stable passivation of InN surface electron accumulation with sulphur treatment

Abstract

The effects of treatment with ammonium sulphide ((NH4)2Sx) solution and exposure to air for a month on the electronic properties of InN surfaces has been investigated with high resolution X‐ray photoemission spectroscopy.The valence band, In 3d, and N 1s X‐ray photoemission spectra show that the surface Fermi level decreases by approximately 0.1 eV following initial (NH4)2Sx‐treatment and does not change position with exposure to air for a period of up to a month. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)