Black polymers in bulk-heterojunction solar cells
Journal article, 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
Author
Y. Zhou
University of Siegen
Desta Antenehe Gedefaw
Chalmers, Chemical and Biological Engineering, Polymer Technology
Stefan Hellström
Chalmers, Chemical and Biological Engineering, Polymer Technology
Ilse Kraetschmer
Linköping University
Fengling Zhang
Linköping University
Wendimagegn Mammo
Chalmers, Chemical and Biological Engineering, Polymer Technology
Addis Ababa University
Olle Inganaes
Linköping University
Mats Andersson
Chalmers, Chemical and Biological Engineering, Polymer Technology
IEEE Journal of Selected Topics in Quantum Electronics
1077-260X (ISSN) 15584542 (eISSN)
Vol. 16 6 1565-1572 5491033Subject Categories
Polymer Chemistry
Areas of Advance
Nanoscience and Nanotechnology
Energy
Materials Science
DOI
10.1109/JSTQE.2010.2049002