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Journal of Materials Science

Erschienen in:

20.04.2020 | Chemical routes to materials

Effect of nitrogen on valence states of Cu in Cu_xO by changing the surface chemical potential of oxygen

verfasst von: Deliang Chu, Xiaojie Wu, Mingcai Yao, Fanzhi Meng, Xiang Wang, Jian Meng

Erschienen in: Journal of Materials Science | Ausgabe 21/2020

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Abstract

Because the valence state of metal with variable valences is sensitive to oxidation atmosphere, it is difficult to fabricate single-phased metal oxide with intermediate valence by vapor or vacuum deposition. In this work, the copper valence state in oxides was controlled by introducing a nitrogen flow into the sputtering chamber. The surface chemical potential of oxygen can be efficiently tuned through adsorption competition on the growth surface. The transition process from CuO–Cu₂O mixture to single Cu₂O was observed with increasing the nitrogen flow rate. For the single-phased Cu₂O, the hole concentration was tuned in a range of 2.6 × 10¹⁷ to 1.1 × 10¹⁸ cm⁻³.

Vorheriger Artikel Structural and electrical characterization of hydrothermally deposited piezoelectric (K,Na)(Nb,Ta)O3 thick films

Nächster Artikel Sensing performance of gas sensors fabricated from controllably grown ZnO-based nanorods on seed layers

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Titel: Effect of nitrogen on valence states of Cu in CuxO by changing the surface chemical potential of oxygen
verfasst von: Deliang Chu
Xiaojie Wu
Mingcai Yao
Fanzhi Meng
Xiang Wang
Jian Meng
Publikationsdatum: 20.04.2020
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 21/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-020-04647-x

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