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Near-infrared absorbing unsymmetrical Zn(II) phthalocyanine for dye-sensitized solar cells
| Content Provider | Semantic Scholar |
|---|---|
| Author | Singh, Varun Kumar Salvatori, Paolo Amat, Anna Agrawal, Saurabh Angelis, Filippo De Nazeeruddin, K. Krishna, Narra Vamsi Giribabu, Lingamallu |
| Copyright Year | 2013 |
| Abstract | Unsymmetrical Zn phthalocyanine consisting of six S-aryl groups at α-positions and a carboxy anchoring group at β-position has been designed and synthesized for dye-sensitized solar cells (DSCs) applications. The unsymmetrical phthalocyanine has been characterized by elemental, MALDI-MS, IR, 1H NMR, UV–Vis, fluorescence (steady-state & lifetime) and electrochemical (including spectroelectrochemical) methods. The Q-band absorption maxima of the unsymmetrical phthalocyanine was red-shifted due to the presence of S-aryl groups, which destabilizes the HOMO level consistent with electrochemical and in situ spectroelectrochemical studies. The redox processes are assigned to the macrocyclic ring-based electron transfer processes, the LUMO of the unsymmetrical phthalocyanines lies above the TiO2 conduction band, and the HOMO is well below the potential of the I−/I3− redox electrolyte. The experimental results are supported by DFT/TD-DFT studies. The new unsymmetrical phthalocyanines was tested in DSCs using I−/I3− redox electrolyte system. |
| Starting Page | 289 |
| Ending Page | 296 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.ica.2013.07.052 |
| Volume Number | 407 |
| Alternate Webpage(s) | http://eprints.bice.rm.cnr.it/8015/1/195.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.ica.2013.07.052 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
