title: "Columnlike" structure of the cross-sectional morphology of bulk heterojunction materials.
abstract: The cross-sectional morphology of the bulk heterojunction (BHJ) films comprising regio-regular poly(3-hexylthiophene) (rrP3HT) and [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) was observed with transmission electron microscopy (TEM). The cross-sectional TEM images of the BHJ film provide information on the pathways for charge transport through the film thickness. The length scale of the phase separation was obtained from spatial Fourier transform analysis of the TEM images and from calculations of the autocorrelation function.
authors.affiliation: Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, California 93106-5090, USA.
authors.forename: Ji Sun
authors.initials: JS
authors.lastname: Moon
authors.forename: Jae Kwan
authors.initials: JK
authors.lastname: Lee
authors.forename: Shinuk
authors.initials: S
authors.lastname: Cho
authors.forename: Jiyun
authors.initials: J
authors.lastname: Byun
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Heeger
mesh_terms: D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D044367:Phase Transition; D011108:Polymers / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D011108:Polymers