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Article: Approaches to low-bandgap polymer solar cells: using polymer charge-transfer complexes and fullerene metallocomplexes.
- Article from:
- Pure and Applied Chemistry
- Article date:
- October 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 International Union of Pure and Applied Chemistry. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract: Polymer solar cells have shown high potential to convert solar energy into electricity in a cost-effective way. One of the basic reasons limiting the polymer solar cell efficiency is insufficient absorption of the solar radiation by the active layer that limits the photocurrent. To increase the photocurrent, one needs low-bandgap materials with strong absorption below 2 eV. In this work, we study two types of low-bandgap materials: ground-state charge-transfer complexes (CTCs) of a conjugated polymer, MEH-PPV (poly[2-methoxy-5-(2'-ethylhexyloxy)1,4-phenylenevinylene]), and an exohedral metallocomplex of fullerene, ([[eta].sup.2]-[C.sub.60])IrH(CO)[(+)DIOP] ...