Tandem Solar Cells from Accessible Low Band-Gap Polymers Using an Efficient Interconnecting Layer
| Autor: | Benjamin J. Leever, Santanu Bag, Caroline Grand, Matthew J. Dalton, Romesh J. Patel, John R. Reynolds, J. Daniel Berrigan, Michael F. Durstock, Ajaykumar Bunha |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Fabrication Tandem Band gap Solar spectra Nanotechnology 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polymer solar cell 0104 chemical sciences chemistry General Materials Science 0210 nano-technology Realization (systems) Layer (electronics) |
| Zdroj: | ACS Applied Materials & Interfaces. 8:16-19 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Tandem solar cell architectures are designed to improve device photoresponse by enabling the capture of wider range of solar spectrum as compared to single-junction device. However, the practical realization of this concept in bulk-heterojunction polymer systems requires the judicious design of a transparent interconnecting layer compatible with both polymers. Moreover, the polymers selected should be readily synthesized at large scale (1 kg) and high performance. In this work, we demonstrate a novel tandem polymer solar cell that combines low band gap poly isoindigo [P(T3-iI)-2], which is easily synthesized in kilogram quantities, with a novel Cr/MoO3 interconnecting layer. Cr/MoO3 is shown to be greater than 80% transparent above 375 nm and an efficient interconnecting layer for P(T3-iI)-2 and PCDTBT, leading to 6% power conversion efficiencies under AM 1.5G illumination. These results serve to extend the range of interconnecting layer materials for tandem cell fabrication by establishing, for the first time, that a thin, evaporated layer of Cr/MoO3 can work as an effective interconnecting layer in a tandem polymer solar cells made with scalable photoactive materials. |
| Databáze: | OpenAIRE |
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