Materials for Sustainable Energy 2010
DOI: 10.1142/9789814317665_0006
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Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols

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Cited by 212 publications
(337 citation statements)
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“…Substantial research progress concerning OSCs and OLEDs has been made in the areas of device fabrication, mechanism, morphology, interface and structure. [1][2][3] For instance, OSCs with single and tandem heterojunction structures have been reported with efficiencies of approximately 10%, 4,5 which sets a new milestone for highperformance OSCs aimed at conquering the energy crises. OLEDs have been available in the commercial market and have achieved highly efficient performance of RGB (red-green-blue) color and white light displays.…”
Section: Introductionmentioning
confidence: 99%
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“…Substantial research progress concerning OSCs and OLEDs has been made in the areas of device fabrication, mechanism, morphology, interface and structure. [1][2][3] For instance, OSCs with single and tandem heterojunction structures have been reported with efficiencies of approximately 10%, 4,5 which sets a new milestone for highperformance OSCs aimed at conquering the energy crises. OLEDs have been available in the commercial market and have achieved highly efficient performance of RGB (red-green-blue) color and white light displays.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, solution-processed metal oxides such as MoO 3 , V 2 O 5 , TiO 2 and SnO x with new features of low-temperature and cost-effective processing methods have been developed to improve the availability of organic optoelectronics to the general public. [24][25][26][27][28][29][30] Moreover, for instance, Cs-doped TiO 2 , Csdoped ZnO, Al-doped ZnO, Al-doped MoO 3 and metal oxides incorporated with other functional elements have been developed to realize efficient carrier transport with other features of high conductivity, the carrier blocking effect and optical enhancement. [31][32][33][34][35][36][37][38] These doped metal oxide interfacial layers require high-temperature annealing or co-evaporation methods, and the film formation is usually limited to either normal or inverted device architecture only.…”
Section: Introductionmentioning
confidence: 99%
“…[2][3][4][5] Such optimizations include approaches like annealing the active-layer in solvent atmosphere, 2,5,6 thermal annealing, post-production thermal annealing after deposition of metal electrode on the active-layer, 3 and using high-boiling point solvents as additives. 4 Utilizing annealing in solvent-atmosphere (also called solvent-annealing) to control nanomorphology was one of the key developments for OPVs; Li et al showed that desirable morphology is achieved by slowing the bulk-heterojunction (BHJ) film growth rate, or in other words, by increasing the time it takes for the wet films to solidify. 2 It was shown that slow growth rate leads to a higher order in the p-conjugated structure of P3HT, enhanced optical absorption with more pronounced vibronic shoulders, and more balanced carrier transport.…”
mentioning
confidence: 99%
“…This improvement of PCEs is generally attributed to the increased absorption of PC 71 BM in the visible region compared with PC 61 BM, which resulted in improved J SC values. Furthermore, although the addition of 3% 1,8-diiodooctane (DIO) 34 to the processing solvent for the DTS-T-C hy -based device did not considerably improve the OPV performance, the addition of 3% DIO to o-DCB for DTS-T-C h /PC 71 BM led to a drastic increase of Jsc (10.1 mA cm − 2 ) and FF (0.64) while the V OC remained at a high level (0.80 V); this resulted in a substantial improvement of the overall device performance to a PCE of 5.17%. The X-ray diffraction patterns of DTS-T-C h /PC 71 BM films showed a broad peak at approximately 2θ = 20°, which is ascribed to π-π stacking between the backbones of the copolymers, irrespective of whether DIO was added during processing.…”
Section: D-a Copolymers For Organic Photovoltaics Y Ie and Y Asomentioning
confidence: 99%