Fig. 17 Impact of processing conditions on the texture of P3HT [68]. GIXRD (left) and AFM
measurements (right) of P3HT layers deposited from chloroform solution by (a) drop-casting and
(b) spin-coating. (Reprinted with permission from Yang et al. [68]. Copyright (2007) American
Institute of Physics)
Fig. 18 (a) Results obtained by carbon K-edge NEXAFS measurements of P3HT films cast from
chloroform for various spin speeds [71]. Positive values of the dichroic ratio R denote an edge-on
orientation of the polymer backbone; negative values denote a face-on orientation (“plane-on”).
(b) Chain orientation with respect to the substrate, with the π*-transition being perpendicular to the
conjugated backbone. (Reprinted with permission from Delongchamp et al. [71]. Copyright (2005)
American Chemical Society)
Morphology of P3HT in Thin Films
65
measurements (right) of P3HT layers deposited from chloroform solution by (a) drop-casting and
(b) spin-coating. (Reprinted with permission from Yang et al. [68]. Copyright (2007) American
Institute of Physics)
Fig. 18 (a) Results obtained by carbon K-edge NEXAFS measurements of P3HT films cast from
chloroform for various spin speeds [71]. Positive values of the dichroic ratio R denote an edge-on
orientation of the polymer backbone; negative values denote a face-on orientation (“plane-on”).
(b) Chain orientation with respect to the substrate, with the π*-transition being perpendicular to the
conjugated backbone. (Reprinted with permission from Delongchamp et al. [71]. Copyright (2005)
American Chemical Society)
Morphology of P3HT in Thin Films
65