Efficient perovskite photovoltaic devices using chemically doped PCDTBT as a hole-transport material. Issue 30 (21st July 2017)

• Record Type: Journal Article
• Authors: Wong-Stringer, Michael; Bishop, James E.; Smith, Joel A.; Mohamad, David K.; Parnell, Andrew J.; Kumar, Vikas; Rodenburg, Cornelia; Lidzey, David G.
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 30(2017)
• Page Start: 15714
• Page End: 15723
• Publication Date: 2017-07-21
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta03103c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : PCDTBT conductivity is 10 5 times higher when doped with LITFSI & TBP, perovskite devices employing doped PCDTBT achieve 15.9% PCE. Abstract : It is shown that by chemically doping the carbazole-based conjugated polymer PCDTBT using the molecular materials TBP, LiTFSI and FK209, its conductivity can be increased by a factor of 10 5 times. Such doped PCDTBT films are used as a hole transport material (HTM) for standard architecture (CH(NH2 )2 PbI3 )0.85 (CH3 NH3 PbBr3 )0.15 perovskite solar cells (PSCs). We show that devices with optimised PCDTBT thickness and doping level achieve a peak power conversion efficiency (PCE) of 15.9%. We expect a number of related doped conjugated polymers to also be capable of acting as efficient HTMs for PSCs.