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Local electronic structure of phosphorus-doped ZnO films investigated by X-ray absorption near-edge spectroscopy

Local electronic structure of phosphorus-doped ZnO films investigated by X-ray absorption... Using X-ray absorption near-edge structure spectroscopy (XANES), we investigate the local electronic structure of phosphorus (P) and its chemical valence in laser-ablated n-type (as-grown), and p-type (annealed) P-doped ZnO thin films. Both the P L 1- and P L 2,3-edge XANES spectra reveal that the valence state of P is 3− (P3−) in the p-type as well as in the n-type P-doped ZnO. However, the peak intensity is stronger in the former than that in the latter, suggesting that P replaces O (O2− sites with the P3−) after rapid thermal annealing. The Zn and O K-edges XANES spectra consistently demonstrate that, in the p-type state, P ions substitutionally occupy O sites in the ZnO lattice. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Physics A: Materials Science Processing Springer Journals

Local electronic structure of phosphorus-doped ZnO films investigated by X-ray absorption near-edge spectroscopy

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References (23)

Publisher
Springer Journals
Copyright
Copyright © 2008 by Springer-Verlag
Subject
Physics; Condensed Matter Physics; Optical and Electronic Materials; Nanotechnology; Characterization and Evaluation of Materials; Surfaces and Interfaces, Thin Films; Operating Procedures, Materials Treatment
ISSN
0947-8396
eISSN
1432-0630
DOI
10.1007/s00339-008-4883-6
Publisher site
See Article on Publisher Site

Abstract

Using X-ray absorption near-edge structure spectroscopy (XANES), we investigate the local electronic structure of phosphorus (P) and its chemical valence in laser-ablated n-type (as-grown), and p-type (annealed) P-doped ZnO thin films. Both the P L 1- and P L 2,3-edge XANES spectra reveal that the valence state of P is 3− (P3−) in the p-type as well as in the n-type P-doped ZnO. However, the peak intensity is stronger in the former than that in the latter, suggesting that P replaces O (O2− sites with the P3−) after rapid thermal annealing. The Zn and O K-edges XANES spectra consistently demonstrate that, in the p-type state, P ions substitutionally occupy O sites in the ZnO lattice.

Journal

Applied Physics A: Materials Science ProcessingSpringer Journals

Published: Sep 13, 2008

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