title: PCDTBT based solar cells: one year of operation under real-world conditions.
abstract: We present measurements of the outdoor stability of PCDTBT:PC71BM based bulk heterojunction organic solar cells for over the course of a year. We find that the devices undergo a burn-in process lasting 450 hours followed by a TS80 lifetime of up to 6200 hours. We conclude that in the most stable devices, the observed TS80 lifetime is limited by thermally-induced stress between the device layers, as well as materials degradation as a result of edge-ingress of water or moisture through the encapsulation.
authors: Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, UK.
authors: Yiwei
authors: Y
authors: Zhang
authors: Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, UK.
authors: Edward
authors: E
authors: Bovill
authors: Ossila Ltd, Kroto Innovation Centre, Broad Lane, Sheffield, S3 7HQ, UK.
authors: James
authors: J
authors: Kingsley
authors: Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, UK.
authors: Alastair R
authors: AR
authors: Buckley
authors: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
authors: Hunan
authors: H
authors: Yi
authors: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
authors: Ahmed
authors: A
authors: Iraqi
authors: School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China.
authors: Tao
authors: T
authors: Wang
authors: Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, UK.
authors: David G
authors: DG
authors: Lidzey