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The ZnO/(0001) sapphire film following PLD: (a) SEM secondary electron image, viewed along , (b) TEM micrograph of cross-sectional sample showing nanorods which are defect-free, and (c) TEM from a much thinner area than (b) showing TDs in the continuous deposit below the nanorods, imaged in two-beam conditions with . All scale bars are .
(a) TEM image of a ZnO/(0001) sapphire cross section after hydrothermal growth, taken in two-beam conditions with ; the scale bar is . (b) and (c) are experimental (left) and simulated (right) CBED patterns, taken (b) near the top of the overlayer in the same sample and (c) from the underlayer in a PLD-grown sample.
An incoherent boundary between the Zn-polar overlayer (top) and the O-polar underlayer, seen close to edge on. The scale bar is .
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