A study of oligothiophene–acceptor dyes in p-type dye-sensitized solar cells. Issue 22 (12th February 2016)

• Record Type: Journal Article
• Authors: Sheibani, Esmaeil; Zhang, Lei; Liu, Peng; Xu, Bo; Mijangos, Edgar; Boschloo, Gerrit; Hagfeldt, Anders; Hammarström, Leif; Kloo, Lars; Tian, Haining
• Is Part Of: RSC advances. Volume 6:Issue 22(2016)
• Page Start: 18165
• Page End: 18177
• Publication Date: 2016-02-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra26310g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Two new dyes, E1 andE2, equipped with triphenylamine as the electron donor, oligothiophene as the linker and different electron acceptor groups, have been designed and synthesized as photosensitizers for p-type dye-sensitized solar cells (p-DSCs). Abstract : Two new dyes, E1 andE2, equipped with triphenylamine as the electron donor, oligothiophene as the linker and different electron acceptor groups, have been designed and synthesized as photosensitizers for p-type dye-sensitized solar cells (p-DSCs). A systematic study of the effect of molecular structures on the observed photophysical properties, the electron/hole recombination process, the overall performance and the interfacial charge separation was carried out. Transient absorption spectroscopy (TAS) shows that theE1 dye with a napthoilene-1, 2-benzimidazole (NBI) unit as the acceptor has a longer lifetime in the reduced state than theE2 dye with a malononitrile subunit on the NiO surface.