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Local -type conductivity in zinc oxide dual-doped with nitrogen and arsenic
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10.1063/1.2149171
/content/aip/journal/apl/87/26/10.1063/1.2149171
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/26/10.1063/1.2149171
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Image of FIG. 1.
FIG. 1.

(Color) Typical AFM (left) and SCM images (right) of ZnO layers which were conventionally mono-doped with nitrogen (a) or arsenic (b), or dual-doped with both acceptor species [(c) and (d)], respectively. The morphology of the mono-doped samples is not smooth and reveals three-dimensional islands with typical diameters of about 5–8 and for N and As doping, respectively. The corresponding SCM images proof dominant -type regions (bluish) despite the acceptor doping. Moreover, very small -type domains (orange) were found only for ZnO:N, and then exclusively related to island/grainboundaries, whereas ZnO:As revealed no significant -type regions,but a majority of depleted areas (black) due to the smaller grains and the superimposing space charge regions. For the dual-doped layers, (c) shows a typical sample with mixed conductivity, i.e., with dominant three-dimensional islands which are -type in SCM and withsmoother, -type regions. In contrast, samples grown under more suitable conditions (d) reveal dominant smooth -type domains which are only partly disturbed by very few microcracks and three-dimensional which are all -type.

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/content/aip/journal/apl/87/26/10.1063/1.2149171
2005-12-20
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Local p-type conductivity in zinc oxide dual-doped with nitrogen and arsenic
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/26/10.1063/1.2149171
10.1063/1.2149171
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