Thieno[3,2-b]thiophene-diketopyrrolopyrrole Containing Polymers for Inverted Solar Cells Devices with High Short Circuit Currents (pages 5647–5654)
Hugo Bronstein, Elisa Collado-Fregoso, Afshin Hadipour, Ying W. Soon, Zhenggang Huang, Stoichko D. Dimitrov, Raja Shahid Ashraf, Barry P. Rand, Scott E. Watkins, Pabitra S. Tuladhar, Iain Meager, James R. Durrant and Iain McCulloch
Article first published online: 17 JUN 2013 | DOI: 10.1002/adfm.201300287
Four diketopyrrolopyrrole containing polymers are synthesized and evaluated for use in organic solar cells. Heteroatomic substitution allows precise control over the polymer energy levels with minimal disruption to the solid state properties. Variations in the short circuit current are linked to the energetic offset between polymer and fullerene.