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Anthracene Based Conjugated Polymers: Correlation between pi-pi-Stacking Ability, Photophysical Properties, Charge Carrier Mobility, and Photovoltaic Performance

MACROMOLECULES. Bd. 43. H. 3. WASHINGTON: AMER CHEMICAL SOC 2010 S. 1261 - 1269

Erscheinungsjahr: 2010

ISBN/ISSN: 0024-9297 ; 1520-5835

Publikationstyp: Zeitschriftenaufsatz

Sprache: Englisch

Doi/URN: 10.1021/ma902273s

Volltext über DOI/URN

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Inhaltszusammenfassung


This article reports on the synthesis, characterization and properties of a series of anthracene-containing poly(p-phenylene-ethynylene)-alt-poly(p-phenylene-vinylene)s (PPE-PPV) copolymers with general constitutional unit (Ph-C equivalent to Canthr-C equivalent to C-Ph-CH=CH-Ph-CH=CH)(n) denoted AnE-PV. Solely linear (AnE-PVaa, -ad, ae) and solely branched (AnE-PVbb) as well as mixed linear and branched (AnE-PVab, -ac, -ba, -cc) alkoxy side chains were grafted to the backbone in order to tun...This article reports on the synthesis, characterization and properties of a series of anthracene-containing poly(p-phenylene-ethynylene)-alt-poly(p-phenylene-vinylene)s (PPE-PPV) copolymers with general constitutional unit (Ph-C equivalent to Canthr-C equivalent to C-Ph-CH=CH-Ph-CH=CH)(n) denoted AnE-PV. Solely linear (AnE-PVaa, -ad, ae) and solely branched (AnE-PVbb) as well as mixed linear and branched (AnE-PVab, -ac, -ba, -cc) alkoxy side chains were grafted to the backbone in order to tune the pi-pi-stacking ability of the materials. It has been possible to establish a correlation between pi-pi-stacking ability, absorptive behavior, charge carrier mobility, solar cell active layer nanoscale morphology and resulting photovoltaic performance. Solar cells energy conversion efficiencies between 0.34% and 3.14% were achieved. The best performance was achieved from AnD-PVab showing both stacking ability and highest pi-pi-stacking distance of 0.386 nm as compared to 0.380 nm for the others. Poorer performance resulted from polymers with no inclination to stack. AnE-PVba, -bb, although they exhibited the higher charge carrier mobilities. Hole mobilities range from 1.5 x 10(-5) cm(2)/V.s (AnE-PVad) tp 4.5 x 10(-4) cm(2)/V.s (AnE-PVba). An increase of the open circuit voltage from similar to 650 mV to similar to 900 mV is observed with decreasing side chain density. In case of the AnE-PVcc:PCBM (1:1) blend a 2-fold increase in solar cell efficiency (from 1% to 2%) was obtained when the active layer was spin cast from a 1:1 mixture of chlorofom:chlorobenzene instead of using chlorobenzene. » weiterlesen» einklappen

Autoren


Egbe, Daniel A. M. (Autor)
Türk, Stefan (Autor)
Kühnlenz, Florian (Autor)
Jadhav, Rupali (Autor)
Wild, Andreas (Autor)
Birckner, Eckhard (Autor)
Adam, Getachew (Autor)
Pivrikas, Almantas (Autor)
Cimrova, Vera (Autor)
Knör, Günther (Autor)
Sariciftci, Niyazi S. (Autor)
Hoppe, Harald (Autor)

Klassifikation


DDC Sachgruppe:
Allgemeines, Wissenschaft

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