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Peripherally and Axially Carboxylic Acid Substituted Subphthalocyanines for Dye‐Sensitized Solar Cells |
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| Authors: | Dr. Mine Ince Dr. Anaïs Medina Dr. Jun‐Ho Yum Dr. Aswani Yella Dr. Christian G. Claessens Dr. M. Victoria Martínez‐Díaz Prof. Michael Grätzel Dr. Mohammad K. Nazeeruddin Prof. Tomás Torres |
| Affiliation: | 1. Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid (Spain), Fax: (+34)?914973966;2. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, 1015 Lausanne (Switzerland), Fax: (+41)?21693‐4111;3. IMDEA Nanociencia, C/Faraday, 9, Cantoblanco, 28049 Madrid (Spain) |
| Abstract: | 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 TiO2 conduction band. |
| Keywords: | dye‐sensitized solar cells photosensitizers porphyrinoids subphthalocyanines |