Black polymers in bulk-heterojunction solar cells
Artikel i vetenskaplig tidskrift, 2010
The active materials in polymer solar cells have a decisive role on the performance of the cells. Polymers with extended absorption, i.e., black polymers with absorption covering the whole visible region are desired in order to capture the important parts of the solar irradn. Different ways of achieving black active materials are discussed and two new alternating polyfluorene (APFO) copolymers with broad absorption, APFO-Black 1 and APFO-Black 2, using two different design strategies are described. The UV-Vis absorption spectra of the polymers extend to approx. 850 nm, and the polymers were used as donors and [6,6]-phenyl-C61-butyric acid Me ester (PCBM)[60] or PCBM[70] as acceptors in solar cell devices in various mixing ratios. The best combinations yielded an overall power conversion efficiency of 1.2% for APFO-Black 1 and 1.5% for APFO-Black 2. [on SciFinder(R)]
photovoltaic cell materials
fullerene
charge-carrier mobility
Atomic force microscopy (AFM)
solar energy
Författare
Y. Zhou
Universität Siegen
Desta Antenehe Gedefaw
Chalmers, Kemi- och bioteknik, Polymerteknologi
Stefan Hellström
Chalmers, Kemi- och bioteknik, Polymerteknologi
Ilse Kraetschmer
Linköpings universitet
Fengling Zhang
Linköpings universitet
Wendimagegn Mammo
Chalmers, Kemi- och bioteknik, Polymerteknologi
Addis Ababa University
Olle Inganaes
Linköpings universitet
Mats Andersson
Chalmers, Kemi- och bioteknik, Polymerteknologi
IEEE Journal of Selected Topics in Quantum Electronics
1077-260X (ISSN) 15584542 (eISSN)
Vol. 16 6 1565-1572 5491033Ämneskategorier
Polymerkemi
Styrkeområden
Nanovetenskap och nanoteknik
Energi
Materialvetenskap
DOI
10.1109/JSTQE.2010.2049002