On the Underlying Mechanism of Light-Induced Patterning of N719-Stained Photoanodes for "Photovoltaic Photographs"
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866917140247871488 |
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| author | Robert, Allyson Fransaert, Nico Awouters, Willem Marchal, Wouter Adriaensens, Peter Valcke, Roland Manca, Jean V. |
| author_facet | Robert, Allyson Fransaert, Nico Awouters, Willem Marchal, Wouter Adriaensens, Peter Valcke, Roland Manca, Jean V. |
| contents | Recently, "photovoltaic photographs" were proposed as a creative application of photovoltaic technologies, relevant in fields such as architecture or the automotive industry. In this application an image is created by light-induced patterning of the photoactive layer, causing a local change in the appearance of the solar cell. In order to further develop this concept, it is crucial to elucidate the mechanism underlying these local changes. Here, UV-VIS and infrared spectroscopic techniques, as well as Gas Chromatography - Mass Spectrometry and time-of-flight secondary ion mass spectrometry, have been used to investigate the physico-chemical changes induced by this process in the photoactive layer of proof-of-concept photo-patterned dye-sensitized solar cells. We show that, for N719 photovoltaic photographs, TiO2 plays a crucial role and that the dye undergoes a multi-step chemical degradation, related to its isothiocyanate ligand. These insights are of importance for a better understanding of the photo-induced degradation of N719, a more substantiated control of the light-induced patterning process, and to design appropriate light-induced patterning techniques for other classes of solar cells. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_03008 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the Underlying Mechanism of Light-Induced Patterning of N719-Stained Photoanodes for "Photovoltaic Photographs" Robert, Allyson Fransaert, Nico Awouters, Willem Marchal, Wouter Adriaensens, Peter Valcke, Roland Manca, Jean V. Chemical Physics Materials Science Optics Recently, "photovoltaic photographs" were proposed as a creative application of photovoltaic technologies, relevant in fields such as architecture or the automotive industry. In this application an image is created by light-induced patterning of the photoactive layer, causing a local change in the appearance of the solar cell. In order to further develop this concept, it is crucial to elucidate the mechanism underlying these local changes. Here, UV-VIS and infrared spectroscopic techniques, as well as Gas Chromatography - Mass Spectrometry and time-of-flight secondary ion mass spectrometry, have been used to investigate the physico-chemical changes induced by this process in the photoactive layer of proof-of-concept photo-patterned dye-sensitized solar cells. We show that, for N719 photovoltaic photographs, TiO2 plays a crucial role and that the dye undergoes a multi-step chemical degradation, related to its isothiocyanate ligand. These insights are of importance for a better understanding of the photo-induced degradation of N719, a more substantiated control of the light-induced patterning process, and to design appropriate light-induced patterning techniques for other classes of solar cells. |
| title | On the Underlying Mechanism of Light-Induced Patterning of N719-Stained Photoanodes for "Photovoltaic Photographs" |
| topic | Chemical Physics Materials Science Optics |
| url | https://arxiv.org/abs/2507.03008 |