C. Bader

Inkjet printing was used for the preparation of ternary polymer/polymer/fullerene layers for organic solar cell application, as part of a combinatorial setup for the preparation and characterization of thin-film libraries. Poly(phenylene-ethynylene)-alt-poly(phenylene-vinylene) (PPE-alt-PPV) and poly(diketopyrrolopyrrole-alt-fluorene) (P(DPP-alt-F)) were systematically blended with poly(3-octylthiophene) (P3OT) and investigated by UV-vis spectroscopy to improve the photon harvesting by extending the absorption range. The blends with the broadest absorption range (20 and 40 wt % of PPE-alt-PPV and P(DPP-alt-F), respectively) were mixed with mono(1-[3-(methoxycarbonyl)propyl]-1-phenyl)-[6,6]C61 (PCBM). The blend with the low band gap polymer P(DPP-alt-F) revealed the most extended absorption, which ranges over the whole visible spectrum (350 to 750 nm). The mixing with PCBM (ratio 1/3) led to an optimal emission quenching and revealed a smooth film formation. In this contribution, we show that the combinatorial screening using inkjet printing represents an effective, time- and material-saving workflow for the investigation of polymer blend libraries, which is of high interest for the development of new materials for active layers in organic photovoltaics.

10.1021/co400006q

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Citations (7)

CCDC 235880: Experimental Crystal Structure Determination

The Cambridge Structural Database (2005)

Tapashi G. Roy S.K.S. Hazari Bikash Kumar Dey H.A. Miah C. Bader

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc7xg1m

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CCDC 232550: Experimental Crystal Structure Determination

The Cambridge Structural Database (2005)

A. Behrens U. Behrens Ebbe Nordlander C. Bader Dieter Rehder

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc7szml

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CCDC 235762: Experimental Crystal Structure Determination

The Cambridge Structural Database (2005)

Tapashi G. Roy S.K.S. Hazari Bikash Kumar Dey H.A. Miah C. Bader

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc7xb7p

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CCDC 243869: Experimental Crystal Structure Determination

The Cambridge Structural Database (2005)

Dieter Rehder Wenjian Zhang Xin‐Tao Wu Martin Ebel C. Bader

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc85rrx

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CCDC 252201: Experimental Crystal Structure Determination

The Cambridge Structural Database (2005)

Mannar R. Maurya Seema Agarwal C. Bader Martin Ebel Dieter Rehder

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc8gfjn

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Photophysical and lasing characterization of neat films of 4-methyl-TPD and of a 4-methyl-TPD phenyl substituted MEH-PPV copolymer

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2003)

Wolfgang Hölzer А. Penzkofer Reji Philip H. Tillmann C. Bader

Wave-guided travelling-wave lasing (amplification of spontaneous emission in waveguide) is studied on neat films of the triphenylamine dimer 4-methyl-TPD, and of the 4-methyl-TPD phenyl substituted MEH-PPV copolymer TPD(4M)-MEH-P-PPV. Laser action is achieved by transverse pumping neat films on glass substrates with picosecond excitation pulses (wavelength 347.15 nm, duration 35 ps). Lasing occurs at 422 nm for 4-methyl-TPD and at 544 nm for TPD(4M)-MEH-P-PPV. The optical constants (absorption spectra and refractive index spectra), the absorption cross-section spectra, fluorescence quantum distributions, fluorescence quantum yields, and fluorescence lifetimes of the samples are determined for photo-physical characterization. The laser performance and the photo-physical parameters of 4-methyl-TPD and TPD(4M)-MEH-P-PPV are compared with results on MEH-PPV.

Triphenylamine

Picosecond

10.1117/12.474834

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Citations (3)

MEH-PPV and Thianthrene-Containing PPV-Derivatives as Efficient PolymericMaterials for Solid-State Lasers, in Organic Light Emitting Materials and Devices V, edited by Z. H. Kafafi

H.‐H. Hörhold H. Tillmann C. Bader Elisabeth Klemm Wolfgang Hölzer

Thianthrene

Source

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Citations (1)

CCDC 267177: Experimental Crystal Structure Determination

The Cambridge Structural Database (2006)

Mannar R. Maurya Seema Agarwal Mohammad Abid Amir Azam C. Bader

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc8z0mv

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Synthesis and characterization of three types of alkoxy-substituted hybrid PPV-PPE polymers: potential candidates for photovoltaic applications

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2004)

Daniel Ayuk Mbi Egbe C. Bader Juergen Nowotny Elisabeth Klemm

Polymers of general constitutional structures: (formula available in paper) have been synthesized through the Horner- Wadsworth-Emmons olefination reactions of bisphosphonates 3 and fluorophoric dialdehydes 1, 2, 12 and 13 respectively. High molecular-weight, thermostable and transparent film-forming materials were obtained in high yields. The new compounds exhibit lyotropic and thermotropic liquid crystalline behavior. The insertion of triple bonds into the conjugated backbone enhances the electronaffinity relative to PPV and make them highly luminescent in solution as well as in solid state. Fluorescence quantum yields between 60 and 80% in solution and between 20 and 50% in film and extinction coefficients around 100,000 M^-1cm^-1 were obtained. In the cases of 4 and 5 are the solid state properties side - chains dependent. The three classes of polymers 5, 14 and 15 show similar photoluminescence behavior despite the differences in constitutional structures. This can be ascribed to identical chromophore system responsible for the emission. They are presently used in the design of light-emitting diodes and organic solar cells devices.

Chromophore

Lyotropic

Thermotropic crystal

10.1117/12.503448

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