title: Effects of impurities on operational mechanism of organic bulk heterojunction solar cells.
abstract: Photoconductive atomic force microscopy in conjunction with transient absorption spectroscopy and charge transport study were used to investigate the effect of impurities (TCNQ and PC84 BM) on the performance of low band gap conjugated polymer and fullerene solar cells to gain insight into whether differing impurity shapes may lead to different loss mechanisms.
authors.affiliation: Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA 93106, USA.
authors.forename: Loren
authors.initials: L
authors.lastname: Kaake
authors.forename: Xuan-Dung
authors.initials: XD
authors.lastname: Dang
authors.forename: Wei Lin
authors.initials: WL
authors.lastname: Leong
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Alan
authors.initials: A
authors.lastname: Heeger
authors.forename: Thuc-Quyen
authors.initials: TQ
authors.lastname: Nguyen
mesh_terms: D004553:Electric Conductivity; D011211:Electric Power Supplies; D037741:Fullerenes / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D037741:Fullerenes; D009570:Nitriles; C013703:tetracyanoquinodimethane