Počet záznamů: 1

Low-bandgap donor–acceptor copolymers with 4,6-bis(3´-(2-ethylhexyl)thien-2´-yl)thieno[3,4-c][1,2,5]thiadiazole: synthesis, optical, electrochemical, and photovoltaic properties

  1. 1.
    0360802 - UMCH-V 2012 RIV US eng J - Článek v odborném periodiku
    Cimrová, Věra - Kmínek, Ivan - Pavlačková, Petra - Výprachtický, Drahomír
    Low-bandgap donor–acceptor copolymers with 4,6-bis(3´-(2-ethylhexyl)thien-2´-yl)thieno[3,4-c][1,2,5]thiadiazole: synthesis, optical, electrochemical, and photovoltaic properties.
    Journal of Polymer Science. Part A - Polymer Chemistry. Roč. 49, č. 15 (2011), s. 3426-3436 ISSN 0887-624X
    Grant CEP: GA MŠk(CZ) 1M06031
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: conjugated polymers * electrochemistry * lowbandgap
    Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
    Impakt faktor: 3.919, rok: 2011

    Two new low-bandgap alternating copolymers (CEHTF and CEHTP) consisting of 4,6-bis(3′-(2-ethylhexyl)thien-2′-yl)thieno[3,4-c][1,2,5] thiadiazole and 9,9-bis(2-ethylhexyl)fluorene or 2,5-bis(isopentyloxy)benzene were synthesized. Their optical, electrochemical, and photovoltaic (PV) properties were studied and are reported. Both the copolymers exhibited long-wavelength absorption covering the whole visible spectral region, which is in CEHTP thin films extended up to near infrared region. Low-optical bandgap values, 1.37 and 1.15 eV, were determined for CEHTF and CEHTP, respectively. PV devices with bulk heterojunction made of blends of copolymers and fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester were prepared and characterized. Effects of intramolecular charge transfer strength and side-chain nature and length on photophysical properties are discussed.
    Trvalý link: http://hdl.handle.net/11104/0006501