Effects of packing structure on the optoelectronic and charge transport properties in poly(9,9-di-n-octylfluorene-alt-benzothiadiazole) - Donley,CL; Zaumseil,J; Andreasen,JW; Nielsen,MM; Sirringhaus,H; Friend,RH; Kim,JS (JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005)