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Facets evolution and surface electrical properties of nonpolar -plane ZnO thin films
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10.1063/1.2218320
/content/aip/journal/apl/88/26/10.1063/1.2218320
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/26/10.1063/1.2218320
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) SFM images of ZnO thin films grown along the direction during (a) , (b) , (c) , and (d) , together with their corresponding surface normals orientations histograms (e), (f), (g), and (h), respectively. A clear orientation along ZnO [0001] is observed in all histograms, with facets at 20° being - and -type planes (calculated value: 19.8°) and facets at 28° being - and -type planes (calculated value: 28.4°). The insets in (g) show the different orientations of zones I and II in (c).

Image of FIG. 2.
FIG. 2.

(Color online) (a) SFM topographic and (b) KPM images of the sample. Regions I and II present different contrast intensities as explained in the main text. (c) Derivative of the topography of region III shown in (b). (d) Surface normal orientation histogram and (e) KPM image of region III. Facets marked with a and b are inclined at 20°, and facets A and B at 28°. Note that on the one hand, two a facets can have different contact potentials while, on the other, B and b facets can present essentially the same contact potential.

Image of FIG. 3.
FIG. 3.

(Color online) Possible atomic models of - and -type ZnO facets. The big and small spheres represent Zn and O atoms, respectively. indicates the number of dangling bonds.

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/content/aip/journal/apl/88/26/10.1063/1.2218320
2006-06-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Facets evolution and surface electrical properties of nonpolar m-plane ZnO thin films
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/26/10.1063/1.2218320
10.1063/1.2218320
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