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A molecularly engineered hole-transporting material for efficient perovskite solar cells
Open accessAbstract
Solution-processable perovskite solar cells have recently achieved certified power conversion efficiencies of over 20%, challenging the long-standing perception that high efficiencies must come at high costs. One major bottleneck for increasing the efficiency even further is the lack of suitable hole-transporting materials, which extract positive charges from the active light absorber and transmit them to the electrode. In this work, we present a molecularly engineered hole-transport material with a simple dissymmetric fluorene–dithiophene (FDT) core substituted by N,N-di-p-methoxyphenylamine donor groups, which can be easily modified, providing the blueprint for a family of potentially low-cost hole-transport materials. We use FDT on state-of-the-art devices and achieve power conversion efficiencies of 20.2% which compare favourably with control devices with 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD). Thus, this new hole transporter has the potential to replace spiro-OMeTAD. The efficiency of perovskite solar cells is limited by the performance of the hole-transport material, which extracts charges from the active layer. Here, a molecularly engineered hole transporter with performance comparable to spiro-OMeTAD is demonstrated.
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Metadata
- Authors
- Saliba, M., Orlandi, S., Matsui, T., Aghazada, S., Cavazzini, M., Correa-Baena, J.-P., Gao, P., Scopelliti, R., Mosconi, E., Dahmen, K.-H., De Angelis, F., Abate, A., Hagfeldt, A., Pozzi, G., Graetzel, M., & Nazeeruddin, M. K.
- Venue
- Nature Energy
- Published
- 2016-01-18
- Volume
- 1
- Issue
- 2
- ISSN
- 2058-7546 (ISSN-L)
- OpenAlex
- W2335170602
- Cited by
- 944
- References
- 4
- FWCI
- 82.78
- Type
- journal article
- Language
- en
- Open access
- green
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- Saliba, M., Orlandi, S., Matsui, T., Aghazada, S., Cavazzini, M., Correa-Baena, J.-P., Gao, P., Scopelliti, R., Mosconi, E., Dahmen, K.-H., De Angelis, F., Abate, A., Hagfeldt, A., Pozzi, G., Graetzel, M., & Nazeeruddin, M. K. (2016). A molecularly engineered hole-transporting material for efficient perovskite solar cells. Nature Energy. https://doi.org/10.1038/nenergy.2015.17
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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