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

Atomic force microscopy (AFM)

charge-carrier mobility

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 University of Technology

Addis Ababa University

Olle Inganaes

Linköpings universitet

Mats Andersson

Chalmers, Kemi- och bioteknik, Polymerteknologi

IEEE Journal on Selected Topics in Quantum Electronics

1077-260X (ISSN)

Vol. 16 1565-1572 5491033

Ämneskategorier

Polymerkemi

Styrkeområden

Nanovetenskap och nanoteknik

Energi

Materialvetenskap

DOI

10.1109/JSTQE.2010.2049002