Journal Article10.1021/MA902132C
Intercorrelation between Structural Ordering and Emission Properties in Photoconducting Polymers
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TL;DR: In this article, the structural properties of poly(p-phenylene−ethynylene)-alt-poly(pphenylene)-vinylene polymers with general constitutional unit were investigated by means of wide-angle X-ray scattering and fluorescence spectroscopy.
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Abstract: We investigated the structural properties of anthracene containing poly(p-phenylene−ethynylene)-alt-poly(p-phenylene−vinylene) polymers with general constitutional unit: (−Ph−C≡C−Anthr−C≡C−Ph−CH═CH−Ph−CH═CH−)n by means of wide-angle X-ray scattering and fluorescence spectroscopy. Interchain interactions were systematically modified by decorating the conjugated polymer backbone with linear or branched or combinations of linear and branched alkoxy side chains. Special emphasis is taken on an evaluation method for fiber scattering spectra that allows the deduction of important structural details of polymer materials with limited degree of order. These include positional correlations along the backbones, interlayer and π−π stacking distances between different chains as well as a quantification of the degree of order in terms of number of lattice planes per domain. The polymers with all-linear side chains attached close to the anthracenylene−ethynylene unit (AnE) show a layered structure. In contrast attachmen...
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Citations
Anthracene Based Conjugated Polymers: Correlation between π−π-Stacking Ability, Photophysical Properties, Charge Carrier Mobility, and Photovoltaic Performance
Daniel A. M. Egbe,Daniel A. M. Egbe,Stefan Türk,Silke Rathgeber,Florian Kühnlenz,Rupali Jadhav,Rupali Jadhav,Andreas Wild,Eckhard Birckner,Getachew Adam,Almantas Pivrikas,Vera Cimrova,Günther Knör,Niyazi Serdar Sariciftci,Harald Hoppe +14 more
TL;DR: In this paper, the synthesis, characterization and properties of a series of anthracene−containing poly(p-phenylene-ethynylene)-alt-poly(pphenylenevinylene)s (PPE−PPV) copolymers with general constitutional unit denoted AnE-PV.
121
Acetylene-Based Materials in Organic Photovoltaics
TL;DR: This work focuses on molecular arylacetylenes, (co)polymers containing triple bonds, and metallopolyyne polymers as p-type semiconductor materials, and hybrids in which oligomeric/polymeric structures incorporating acetylenic linkages such as phenylene ethynylenes have been attached onto C60, and their use as the active materials in photovoltaic devices.
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Unsymmetrical Donor-Acceptor-Acceptor-π-Donor Type Benzothiadiazole-Based Small Molecule for a Solution Processed Bulk Heterojunction Organic Solar Cell.
TL;DR: The solution processed BHJ solar cell with optimized BTD3:PC71BM active layer processed with THF solvent exhibited a PCE of 3.15% higher than previously reported, and the improvement in the PCE has been attributed to the appropriate nanoscale phase separation morphology, balance charge transport, and enhancement in the light harvesting ability of the active layer.
88
The effect of side-chain length on regioregular poly[3-(4-n-alkyl)phenylthiophene]/PCBM and ICBA polymer solar cells
TL;DR: In this article, the effects of the alkyl side-chain length on the optical, electrochemical and structural properties of poly[3-(4-n-alkyl)phenylthiophene] (PAPT):acceptor (phenyl-C61-butyric acid methyl ester (PCBM) or indene-C60 bisadduct (ICBA)) blend films are reported as a function of alky l side chain length.
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Improvement in carrier mobility and photovoltaic performance through random distribution of segments of linear and branched side chains
Daniel A. M. Egbe,Getachew Adam,Almantas Pivrikas,Alberto Montaigne Ramil,Eckhard Birckner,Vera Cimrova,Harald Hoppe,Niyazi Serdar Sariciftci +7 more
TL;DR: In this paper, a side chain based statistical copolymer, denoted AnE-PVstat, showed optimized features as compared to the well defined homologues whose constitutional units are incorporated into its backbone.
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