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3.6 p3ht/zno interface: high deposition rate 39In the 100 HDR interface, the polymer nanocrystal is depositedby exposing the alkyl chains to the ZnO, and theπ − π channels are parallel to the substrate (Figure 3.11).Figure 3.8.: 010 HDR system before (upper panel) and after (lowerpanel) the relaxation at low temperature.After relaxation the π − π channels of the 010 HDR interfaceare not anymore perpendicular to the surface (Figure3.8). Consistently, a very low S y peak is found (topmiddlepanel of Figure 3.9). The S y peak of the polymershifts accordingly to a smaller interdigitation distance withrespect to the s-foil (from 15.8 to 13.6 Å) and correspondsto the dense polymer phase discussed in section 2.1. A generalorder is found in x and z directions (top-left and toprightpanels of Figure 3.9, respectively), where the polymerbackbones keep their straightness and the interplanar distanceis preserved (S z is not shifted).The effect of the temperature in this 010 HDR interface,is to increase the disorder of the system (see Figure 3.10)in the x and z directions (bottom-left and right panels ofFigure 3.9). In addition, in the z direction the temperatureinduces a higher interplanar distance. Interestingly, in the ydirection we observe that the order is slightly increased bythe annealing (bottom-middle panel of Figure 3.9), standingfor a temperature induced crystallization.The second interface model in the regime of high polymerdeposition is the 100 HDR interface where the π channelsare parallel to the ZnO surface and hexyl chains face