Fluoro-functionalization of vinylene units in a polyarylenevinylene for polymer solar cells

被引:27
作者
Cardone, Antonio [1 ]
Martinelli, Carmela [1 ]
Losurdo, Maria [2 ]
Dilonardo, Elena [2 ]
Bruno, Giovanni [2 ]
Scavia, Guido [3 ]
Destri, Silvia [3 ]
Cosma, Pinalysa [4 ]
Salamandra, Luigi [5 ]
Reale, Andrea [5 ]
Di Carlo, Aldo [5 ]
Aguirre, Aranzazu [6 ]
Milian-Medina, Begona [6 ]
Gierschner, Johannes [6 ]
Farinola, Gianluca M. [4 ]
机构
[1] CNR, Ist Chim Composti Organometallici ICCOM Bari, I-70125 Bari, Italy
[2] CNR, Ist Metodol Inorgan & Plasmi IMIP Bari, I-70125 Bari, Italy
[3] CNR, Ist Studio Macromol ISMAC, I-20133 Milan, Italy
[4] Univ Bari Aldo Moro, Dipartimento Chim, I-70125 Bari, Italy
[5] Univ Roma Tor Vergata, Elect Engn Dept, I-00133 Rome, Italy
[6] IMDEA Nanosci, Madrid Inst Adv Studies, Madrid 28049, Spain
关键词
BAND-GAP POLYMERS; DONOR-ACCEPTOR COPOLYMERS; OPTICAL-PROPERTIES; CONJUGATED POLYMERS; POLY(THIENYLENE VINYLENE); PHOTOVOLTAIC PROPERTIES; THIN-FILMS; SUPRAMOLECULAR ORGANIZATION; ORGANIC PHOTOVOLTAICS; DESIGN;
D O I
10.1039/c2ta00177b
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A low band-gap copolymer PDTBTFV alternating bis-thienyl-(bis-alkoxy)-benzothiadiazole blocks with difluorovinylene units and its non-fluorinated counterpart PDTBTV have been synthesized and characterized as donor materials in bulk heterojunction (BHJ) solar cells with PCBM as the acceptor. The solar cells with the fluorinated polymer show better photovoltaic performances than those recorded with the non-fluorinated material. Comparative spectroscopic and computational studies, together with morphological, electrical and optical characterization of thin films, have been carried out to shed light on the reasons for the improvement of performances as induced by the double bond fluorination. Our study introduces the fluorinated double bond as a new conjugated unit in donor polymers for BHJ solar cells.
引用
收藏
页码:715 / 727
页数:13
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