Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells
In this study, we detailed the fabrication and characterization of photovoltaic structures based on PTB7:ICBA (1:1, wt.%) bulk-heterojunction on optical glass substrates by spin-coating. Some samples were deposited on a flat substrate, and others were placed on a patterned substrate obtained by nano...
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2025-05-01
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| author | Tudor Suteu Vlad-Andrei Antohe Stefan Antohe Ionel Stavarache Maria Cristina Balasin Gabriel Socol Marcela Socol Oana Rasoga Sorina Iftimie |
| author_facet | Tudor Suteu Vlad-Andrei Antohe Stefan Antohe Ionel Stavarache Maria Cristina Balasin Gabriel Socol Marcela Socol Oana Rasoga Sorina Iftimie |
| author_sort | Tudor Suteu |
| collection | DOAJ |
| description | In this study, we detailed the fabrication and characterization of photovoltaic structures based on PTB7:ICBA (1:1, wt.%) bulk-heterojunction on optical glass substrates by spin-coating. Some samples were deposited on a flat substrate, and others were placed on a patterned substrate obtained by nano-imprinting lithography; the induced effects were analyzed. We demonstrated that using a patterned substrate enhanced the maximum output power, primarily because the short-circuit current density increased. This can be considered a direct consequence of reduced optical reflection and improved optical absorption. The topological parameters evaluated by atomic force microscopy, namely, the root mean square, Skewness, and Kurtosis, had small values of around 2 nm and 1 nm, respectively. This proves that the mixture of a conductive polymer and a fullerene derivative creates a thin film network with a high flatness degree. The samples discussed in this paper were fabricated and characterized in air; we can admit that the results are encouraging, but further optimization is needed. |
| format | Article |
| id | doaj-art-594f048f48a14bcb8a5475738dae59ee |
| institution | Kabale University |
| issn | 2571-9637 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Surfaces |
| spelling | doaj-art-594f048f48a14bcb8a5475738dae59ee2025-08-20T03:29:39ZengMDPI AGSurfaces2571-96372025-05-01823010.3390/surfaces8020030Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar CellsTudor Suteu0Vlad-Andrei Antohe1Stefan Antohe2Ionel Stavarache3Maria Cristina Balasin4Gabriel Socol5Marcela Socol6Oana Rasoga7Sorina Iftimie8Faculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Bucharest-Magurele, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Bucharest-Magurele, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Bucharest-Magurele, RomaniaNational Institute of Material Physics, 405A Atomistilor Street, 077125 Magurele, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Bucharest-Magurele, RomaniaNational Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, RomaniaNational Institute of Material Physics, 405A Atomistilor Street, 077125 Magurele, RomaniaNational Institute of Material Physics, 405A Atomistilor Street, 077125 Magurele, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Bucharest-Magurele, RomaniaIn this study, we detailed the fabrication and characterization of photovoltaic structures based on PTB7:ICBA (1:1, wt.%) bulk-heterojunction on optical glass substrates by spin-coating. Some samples were deposited on a flat substrate, and others were placed on a patterned substrate obtained by nano-imprinting lithography; the induced effects were analyzed. We demonstrated that using a patterned substrate enhanced the maximum output power, primarily because the short-circuit current density increased. This can be considered a direct consequence of reduced optical reflection and improved optical absorption. The topological parameters evaluated by atomic force microscopy, namely, the root mean square, Skewness, and Kurtosis, had small values of around 2 nm and 1 nm, respectively. This proves that the mixture of a conductive polymer and a fullerene derivative creates a thin film network with a high flatness degree. The samples discussed in this paper were fabricated and characterized in air; we can admit that the results are encouraging, but further optimization is needed.https://www.mdpi.com/2571-9637/8/2/30photovoltaic structuresnano-imprinting lithographyphoto-generated currentoutput power |
| spellingShingle | Tudor Suteu Vlad-Andrei Antohe Stefan Antohe Ionel Stavarache Maria Cristina Balasin Gabriel Socol Marcela Socol Oana Rasoga Sorina Iftimie Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells Surfaces photovoltaic structures nano-imprinting lithography photo-generated current output power |
| title | Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells |
| title_full | Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells |
| title_fullStr | Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells |
| title_full_unstemmed | Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells |
| title_short | Induced Effects of Nano-Patterned Substrates on the Electrical and Photo-Electrical Properties of PTB7-Th:ICBA (1:1, wt.%) Bulk-Heterojunction Solar Cells |
| title_sort | induced effects of nano patterned substrates on the electrical and photo electrical properties of ptb7 th icba 1 1 wt bulk heterojunction solar cells |
| topic | photovoltaic structures nano-imprinting lithography photo-generated current output power |
| url | https://www.mdpi.com/2571-9637/8/2/30 |
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