Low-cost dopant-free carbazole enamine hole-transporting materials for thermally stable perovskite solar cells
| Autor: | Vygintas Jankauskas, Tadas Malinauskas, Kelly Schutt, Grey Christoforo, Giedre Bubniene, Ashley R. Marshall, James M. Ball, Matas Steponaitis, Vytautas Getautis, Pietro Caprioglio, Henry J. Snaith, Philippe Holzhey, Suer Zhou, Maryte Daskeviciene |
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| Přispěvatelé: | „Wiley' grupė |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
perovskites Energy Engineering and Power Technology 02 engineering and technology chemical oxidation enamines hole transporting materials low-cost synthesis perovskite solar cells 010402 general chemistry Photochemistry 7. Clean energy 01 natural sciences Enamine chemistry.chemical_compound Electrical and Electronic Engineering Perovskite (structure) Dopant Carbazole 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry 0210 nano-technology |
| Zdroj: | Solar RRL, Weinheim : Wiley-VCH, 2021, Early access, art. no. 2100984, p. 1-11 Solar RRL, Weinheim : Wiley-VCH, 2022, vol. 6, iss. 1, art. no. 2100984, p. 1-11 |
| ISSN: | 2367-198X |
| Popis: | Perovskite solar cells deliver high efficiencies, but are often made from high-cost bespoke chemicals, such as the archetypical hole-conductor, 2,2′,7,7′-tetrakis(N,N-di-p-methoxy-phenylamine)-9-9′-spirobifluorene (spiro-OMeTAD). Herein, new charge-transporting carbazole-based enamine molecules are reported. The new hole conductors do not require chemical oxidation to reach high power conversion efficiencies (PCEs) when employed in n-type-intrinsic-p-type perovskite solar cells; thus, reducing the risk of moisture degrading the perovskite layer through the hydrophilicity of oxidizing additives that are typically used with conventional hole conductors. Devices made with these new undoped carbazole-based enamines achieve comparable PCEs to those employing doped spiro-OMeTAD, and greatly enhanced stability under 85 °C thermal aging; maintaining 83% of their peak efficiency after 1000 h, compared with spiro-OMeTAD-based devices that degrade to 26% of the peak PCE within 24 h. Furthermore, the carbazole-based enamines can be synthesized without the use of organometallic catalysts and complicated purification techniques, lowering the material cost by one order of magnitude compared with spiro-OMeTAD. As a result, we calculate that the overall manufacturing costs of future photovoltaic (PV) modules are reduced, making the levelized cost of electricity competitive with silicon PV modules. |
| Databáze: | OpenAIRE |
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