A Photoconductive, Thiophene–Fullerene Double-Cable Polymer, Nanorod Device

Abstract

Gold/double-cable copolymer/gold multisegmented nanorods were prepared electrochemically via a template-based method. These "bulk heterojunction" nanorods showed photoconductivity providing us with a platform to study photoinduced charge separation/transport at the nanointerface and begin to think about the rational design of nanoscale solar cells based on such structures.

Design and control of organic semiconductors and their nanostructures for polymer–fullerene-based photovoltaic devices

“…In this section, we highlight recent efforts toward the construction of organic D-A heterojunctions with one-dimensionally conned structures and their applications in photovoltaic and optoelectric devices. [145][146][147] Briseno and co-workers reported the formation of singlecrystalline D-A heterojunction nanoribbons of organic semiconductors by selective crystallization of copper hexadeca-uorophthalocyanine acceptor F 16 CuPc on copper phthalocyanine donor CuPc single-crystalline nanoribbons (Fig. 9).…”

“…Recently, our group reported the rst example of D-A double-cable copolymer nanorods synthesized by electrochemical copolymerization. 146 Ordered anodic aluminum oxide (AAO) templates (Scheme 2) were used as the nano-sized templates and 3-hexylthiophene (3HT) and C 60 were chosen as the electron donor and acceptor, respectively. To fabricate a BHJ nanorod composed of 3HT and fullerene, we synthesized thiophene-tethered C 60 (TC 60 ) and conducted copolymerization of TC 60 with 3HT to obtain the copolymer P(3HT + TC 60 ), where fullerenes were covalently incorporated into the polythiophene (Scheme 3).…”

Active polymer nanofibers for photonics, electronics, energy generation and micromechanics

“…Analogous fibers have been produced with PPV and Fe3O4 nanoparticles, allowing the orientation of nanostructures to be controlled by magnetic fields during electrospinning [265]. Finally, in 2012 Imahori and coworkers have demonstrated bottom-contact devices based on nanorods with two gold terminations and an intermediate segment of P3HT and fullerene, which show a decrease of their resistivity by more than one order of magnitude following illumination with white light [266]. In 2012, the photoconductivity of polyacrylonitrile/PAN core-shell nanofibers has also been investigated, exhibiting a fast response and a resistivity switch ratio exceeding four orders of magnitude [162].…”

Regioisomer effects of [70]PCBM on film structures and photovoltaic properties of composite films with a crystalline conjugated polymer P3HT

“…Nevertheless, considering its inexpensive commercial availability, P3HT has not still lost its value in OPV researches 28 and widely used in tandem devices to achieve high PCE values [29][30][31] and in model systems to investigate the device mechanisms. [32][33][34][35][36][37] In this study, we utilized the highly crystalline P3HT as an electron donor polymer and a-, b-, and mix-[70]PCBM as an electron acceptor to examine the regioisomer effect of [70]PCBM on OPV device performances. Systematic investigations of regioisomer effects on structures and electronic properties of the P3HT:[70]PCBM blend lms were also conducted.…”