Organic Solar Cells: On the Effect of Prevalent Carbazole Homocoupling Defects on the Photovoltaic Performance of PCDTBT:PC71BM Solar Cells (Adv. Energy Mater. 21/2016). Issue 21 (9th November 2016)

• Record Type: Journal Article
• Authors: Lombeck, Florian; Komber, Hartmut; Fazzi, Daniele; Nava, Diego; Kuhlmann, Jochen; Stegerer, Dominik; Strassel, Karen; Brandt, Josef; de Zerio Mendaza, Amaia Diaz; Müller, Christian; Thiel, Walter; Caironi, Mario; Friend, Richard; Sommer, Michael
• Is Part Of: Advanced energy materials. Volume 6:Issue 21(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-11-09
• Subjects: conjugated polymers -- homocoupling defects -- PCDTBT -- organice solar cells -- Suzuki polycondensation; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201670123
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract : Unintentionally formed carbazole homocouplings occur frequently in the photovoltaic material PCDTBT when made by Suzuki polycondensation resulting in significantly lower power conversion efficiency of PCDTBT/fullerene solar cells. A likely loss mechanism that leads to reduced short circuit currents is exciton localization next to the homocoupling defect. This is reported by Michael Sommer and co‐workers in article number 1601232.