Metal–organic green dye: chemical and physical insight into a modified Zn-benzoporphyrin for dye-sensitized solar cells
| Autor: | Giuseppe Gigli, Nicola Angelini, Daniela Caschera, Gentilina Rossi, Giuseppe Mattioli, Gloria Zanotti, Anna Maria Paoletti, Luisa De Marco, Giovanna Pennesi |
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| Přispěvatelé: | Zanotti, Gloria, Angelini, Nicola, Mattioli, Giuseppe, Paoletti, Anna Maria, Pennesi, Giovanna, Rossi, Gentilina, Caschera, Daniela, de Marco, Luisa, Gigli, Giuseppe |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
General Chemical Engineering
chemistry.chemical_element energy application 02 engineering and technology General Chemistry Zinc phthalocyanines 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry dyes 01 natural sciences Redox Effective nuclear charge materials 0104 chemical sciences Dye-sensitized solar cell chemistry Ab initio quantum chemistry methods Molecule 0210 nano-technology HOMO/LUMO Visible spectrum |
| Zdroj: | RSC advances 6 (2016): 5123–5133. doi:10.1039/C5RA20945E info:cnr-pdr/source/autori:ZANOTTI GLORIA, Angelini Nicola, Mattioli Giuseppe and Paoletti Anna Maria and Pennesi Giovanna and Rossi Gentilina and Caschera Daniela and De Marco Luisa and Gigli Giuseppe/titolo:Metal-Organic Green Dye: Chemical and Physical Insight Into a Modified Zn-Benzoporphyrin for Dye-Sensitized Solar Cells/doi:10.1039%2FC5RA20945E/rivista:RSC advances/anno:2016/pagina_da:5123/pagina_a:5133/intervallo_pagine:5123–5133/volume:6 |
| DOI: | 10.1039/C5RA20945E |
| Popis: | A new green unsymmetrical zinc triphenyl-tetrabenzoporphyrin compound, i.e. 5,10,15-(triphenyl),20-[ethynyl-(4-carboxy)phenyl]tetrabenzoporphyrinate Zn(II), has been synthesized as the first of a new class of dyes suitable for dye-sensitized solar cells. The molecule shows a hybrid porphyrin–phthalocyanine structure that allows a finer chemical and physical properties tuning with respect to phthalocyanines, by means of substitutions at the meso-positions, and a UV-vis spectrum that shows both an intense Soret band at 456 nm and a detectable Q band at 655 nm. The photophysical and redox properties of the molecule have been studied and show that HOMO and LUMO energy values are properly positioned for an effective charge transfer. DFT-based ab initio calculations have confirmed the energetic position of frontier orbitals and highlight the intricate structure of the visible spectrum and the charge transfer behavior of the molecule seen as a part of a complex device. Finally, dye-sensitized solar cells have been realized and IPCE and photovoltaic parameters have been measured, showing preliminary efficiency values of about 2%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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