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Chemical States of Nitrogen in ZnO Studied by near-edge X-ray Absorption Fine Structure and Core-level Photoemission Spectroscopies

Petravic, Mladen; Deenapanray, Prakash; Coleman, Victoria A; Jagadish, Chennupati; Kim, K J; Kim, Bongsoo; Koike, Kazuto; Sasa, Shigehiko; Inoue, Masataka; Yano, Mitsuaki

Description

Interaction of low-energy nitrogen ions with ZnO surface has been studied by photoemission spectroscopy (PES) around N 1s core-level and near-edge X-ray absorption fine structure (NEXAFS) around N K-edge. Nitrogen can break Zn-O bonds at the surface and form N-O, Zn-N or Zn-N-O bonds, characterised by specific chemical shifts in PES or absorption peaks in NEXAFS. A distinctive signal from molecular nitrogen has also been observed in ion-bombarded samples in both NEXAFS and PES.

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
URI: http://hdl.handle.net/1885/85025
Source: Surface Science
DOI: 10.1016/j.susc.2006.01.015

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