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Peripherally and Axially Carboxylic Acid Substituted Subphthalocyanines for Dye‐Sensitized Solar Cells
Author(s) -
Ince Mine,
Medina Anaïs,
Yum JunHo,
Yella Aswani,
Claessens Christian G.,
MartínezDíaz M. Victoria,
Grätzel Michael,
Nazeeruddin Mohammad K.,
Torres Tomás
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201303639
Subject(s) - dye sensitized solar cell , carboxylic acid , axial symmetry , chemistry , energy conversion efficiency , photochemistry , photovoltaic system , conduction band , materials science , organic chemistry , optoelectronics , electron , physics , electrode , electrical engineering , engineering , quantum mechanics , electrolyte
A series of subphthalocyanines (SubPcs) bearing a carboxylic acid group either at the peripheral or axial position have been designed and synthesized to investigate the influence of the COOH group positions on the dye‐sensitized solar cell (DSSC) performance. The DSSC devices based on SubPcs with axially substituted carboxylic acid groups showed low photovoltaic performance, whereas peripherally substituted one exhibited higher power conversion efficiency owing to improved injection from LUMO of SubPcs to the TiO 2 conduction band.