2008
DOI: 10.1021/ja800411b
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Highly Efficient Solar Cells Based on Poly(3-butylthiophene) Nanowires

Abstract: Poly(3-butylthiophene) (P3BT) nanowires, prepared by solution-phase self-assembly, have been used to construct highly efficient P3BT/fullerene nanocomposite solar cells. The fullerene/P3BT nanocomposite films showed an electrically bicontinuous nanoscale morphology with average field-effect hole mobilities as high as 8.0 x 10(-3) cm2/Vs due to the interconnected P3BT nanowire network revealed by TEM and AFM imaging. The power conversion efficiency of fullerene/P3BT nanowire devices was 3.0% (at 100 mW/cm2, AM1… Show more

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Cited by 344 publications
(297 citation statements)
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“…11(f-h)]. 73 P3BT was found to aggregate in cold 1,2-dichlorobenzene solution to form nanofibrils, for which the absorption and transport properties can be enhanced. The morphology of P3BT:PCBM nanowire blends are quite similar to P3HT:PCBM nanowire blends.…”
Section: Nano-fibrillar Devicesmentioning
confidence: 99%
“…11(f-h)]. 73 P3BT was found to aggregate in cold 1,2-dichlorobenzene solution to form nanofibrils, for which the absorption and transport properties can be enhanced. The morphology of P3BT:PCBM nanowire blends are quite similar to P3HT:PCBM nanowire blends.…”
Section: Nano-fibrillar Devicesmentioning
confidence: 99%
“…To date, however, very few solutionprocessable, air-stable organic n-channel semiconductors matching the performance of amorphous silicon (a-Si) ( Ն 0.1 cm 2 /Vs) have been reported (4)(5)(6)(7)(8). Organic semiconductor nano/microwires (NWs/MWs) have recently emerged as promising building blocks for various electronic and optical applications such as light-emitting diodes (LEDs) (9), field-effect transistors (FETs) (10), photoswitches (11), vapor sensors (12), solar cells (13), nanoscale lasers (14), optical waveguides (15), and memory devices (16). These unique materials combine the high-performance of singlecrystalline structures with solution-processability by dispersion (17,18).…”
mentioning
confidence: 99%
“…P3HT fibril formation can occur in the solid state upon annealing, or under certain solvent conditions, such as the solution crystallization of the polymer on going from an initial 'good' solvent to a marginal or poor solvent environment 13 as described in early work of Smith 13 for polythiophene whiskers, and more recently in the elegant assembly and device structures of Jenekhe and Guillerez. 14,15 The resultant P3HT nanowires are composed of rigid, linear polymer chains held at an interchain spacing of 3.6 Å (determined by X-ray crystallography), typical of p-stacked systems. Transmission electron microscopy (TEM) of P3HT fibrils, obtained after drying, reveals striking images: impressively long continuous structures wind for hundreds of microns at a constant nanoscale width of B10-30 nm (Figure 1b).…”
Section: Poly(alkyl Thiophene)-based Materials and Assembliesmentioning
confidence: 99%
“…25 The high hole mobility of P3HT nanowires is attractive for organic PVs, especially when combined with electron carriers, such as fullerenes. PV devices having active layers fabricated from solutionassembled poly(3-alkyl thiophene) nanowires display power conversion efficiency (PCE) values comparable with optimized devices that require annealing of P3HT/fullerene films; 15,19,26,27 for example, blending phenyl C 61 Àbutyric acid methyl ester (PC 60 BM) with P3HT fibrils gave devices with a 3.9% PCE, significantly higher than that obtained for thin films of noncrystallized P3HT and PC 60 BM (1.1%), and on par with annealed thin films (3.7%). 28 Active layers prepared by deposition of solution-prepared fibrils do not suffer from the vertical phase separation of the polymer and fullerene components, as observed during thermal annealing of conventional thin films.…”
Section: Nanoscale Assembly T Emrick and E Pentzermentioning
confidence: 99%