Beyond PCBM: Understanding the Photovoltaic Performance of Blends of Indene-C60 Multiadducts with Poly(3-hexylthiophene) (pages 4115–4127)
Alexandre M. Nardes, Andrew J. Ferguson, James B. Whitaker, Bryon W. Larson, Ross E. Larsen, Klára Maturová, Peter A. Graf, Olga V. Boltalina, Steven H. Strauss and Nikos Kopidakis
Article first published online: 11 JUN 2012 | DOI: 10.1002/adfm.201200336
Photovoltaic devices based on a bulk heterojunction of bis-indene-C60 with poly(3-hexylthiophene) show enhanced power conversion efficiency due to an improved open circuit voltage. The addition of a third indene unit to form tris-indene-C60 dramatically hinders both the local and bulk electron transport in the tris-indene-C60 phase due to the formation of small, isolated tris-indene-C60 clusters, resulting in poor device performance.