All Outputs (10)

From generation to collection – impact of deposition temperature on charge carrier dynamics of high-performance vacuum-processed organic solar cells (2024)
Journal Article
Pacalaj, R. A., Dong, Y., Ramirez, I., MacKenzie, R. C. I., Hosseini, S. M., Bittrich, E., Heger, J. E., Kaienburg, P., Mukherjee, S., Wu, J., Riede, M., Ade, H., Müller-Buschbaum, P., Pfeiffer, M., & Durrant, J. R. (2024). From generation to collection – impact of deposition temperature on charge carrier dynamics of high-performance vacuum-processed organic solar cells. Energy & Environmental Science, 9215-9232. https://doi.org/10.1039/d4ee03623a

Vacuum-processed organic solar cells (VP-OSCs) possess many advantages for scalability. However, as the academic community focusses on high performing solution-processed OSCs, detailed studies about the relation between morphology and device characte... Read More about From generation to collection – impact of deposition temperature on charge carrier dynamics of high-performance vacuum-processed organic solar cells.

Roadmap on established and emerging photovoltaics for sustainable energy conversion (2024)
Journal Article
Blakesley, J. C., Bonilla, R. S., Freitag, M., Ganose, A., Gasparini, N., Kaienburg, P., Koutsourakis, G., Major, J. D., Nelson, J., Noel, N. K., Roose, B., Yun, J. S., Aliwell, S., Altermatt, P., Ameri, T., Andrei, V., Armin, A., Bagnis, D., Baker, J., Beath, H., …Hoye, R. (2024). Roadmap on established and emerging photovoltaics for sustainable energy conversion. JPhys Energy, 6(4), Article 041501. https://doi.org/10.1088/2515-7655/ad7404

Photovoltaics (PVs) are a critical technology for curbing growing levels of anthropogenic greenhouse gas emissions, and meeting increases in future demand for low-carbon electricity. In order to fulfill ambitions for net-zero carbon dioxide equivalen... Read More about Roadmap on established and emerging photovoltaics for sustainable energy conversion.

The physical meaning of time-delayed collection field transients from disordered devices (2024)
Journal Article
Hußner, M., Deibel, C., & MacKenzie, R. C. I. (2024). The physical meaning of time-delayed collection field transients from disordered devices. Journal of Applied Physics, 135(12), Article 125502. https://doi.org/10.1063/5.0187323

Charge carrier mobility and recombination determine the performance of many opto-electronic devices such as solar cells, sensors, and light-emitting diodes. Understanding how these parameters change as a function of material choice, charge carrier de... Read More about The physical meaning of time-delayed collection field transients from disordered devices.

Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors (2023)
Journal Article
Galán-González, A., Pander, P., MacKenzie, R. C. I., Bowen, L., Zeze, D. A., Borthwick, R. J., …Chaudhry, M. U. (2023). Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors. ACS Photonics, 10(12), 4315-4321. https://doi.org/10.1021/acsphotonics.3c01080

We report on the mechanism of enhancing the luminance and external quantum efficiency (EQE) by developing nanostructured channels in hybrid (organic/inorganic) light-emitting transistors (HLETs) that combine a solution-processed oxide and a polymer h... Read More about Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors.

Machine Learning for Ultra High Throughput Screening of Organic Solar Cells: Solving the Needle in the Haystack Problem (2023)
Journal Article
Hußner, M., Pacalaj, R. A., Olaf Müller‐Dieckert, G., Liu, C., Zhou, Z., Majeed, N., Greedy, S., Ramirez, I., Li, N., Hosseini, S. M., Uhrich, C., Brabec, C. J., Durrant, J. R., Deibel, C., & MacKenzie, R. C. I. (2023). Machine Learning for Ultra High Throughput Screening of Organic Solar Cells: Solving the Needle in the Haystack Problem. Advanced Energy Materials, 14(3), Article 2303000. https://doi.org/10.1002/aenm.202303000

Over the last two decades the organic solar cell community has synthesized tens of thousands of novel polymers and small molecules in the search for an optimum light harvesting material. These materials are often crudely evaluated simply by measuring... Read More about Machine Learning for Ultra High Throughput Screening of Organic Solar Cells: Solving the Needle in the Haystack Problem.

Beyond the 2D Field‐Effect Charge Transport Paradigm in Molecular Thin‐Film Transistors (2022)
Journal Article
Benvenuti, E., Portale, G., Brucale, M., Quiroga, S. D., Baldoni, M., MacKenzie, R. C., Mercuri, F., Canola, S., Negri, F., Lago, N., Buonomo, M., Pollesel, A., Cester, A., Zambianchi, M., Melucci, M., Muccini, M., & Toffanin, S. (2023). Beyond the 2D Field‐Effect Charge Transport Paradigm in Molecular Thin‐Film Transistors. Advanced Electronic Materials, 9(1), Article 2200547. https://doi.org/10.1002/aelm.202200547

Organic field-effect transistors (OFETs) are considered almost purely interfacial devices with charge current mainly confined in the first two semiconducting layers in contact with the dielectric with no active role of the film thickness exceeding si... Read More about Beyond the 2D Field‐Effect Charge Transport Paradigm in Molecular Thin‐Film Transistors.

Traps and transport resistance are the next frontiers for stable non-fullerene acceptor solar cells (2022)
Journal Article
Wöpke, C., Göhler, C., Saladina, M., Du, X., Nian, L., Greve, C., Zhu, C., Yallum, K. M., Hofstetter, Y. J., Becker-Koch, D., Li, N., Heumüller, T., Milekhin, I., Zahn, D. R., Brabec, C. J., Banerji, N., Vaynzof, Y., Herzig, E. M., MacKenzie, R. C., & Deibel, C. (2022). Traps and transport resistance are the next frontiers for stable non-fullerene acceptor solar cells. Nature Communications, 13(1), Article 3786. https://doi.org/10.1038/s41467-022-31326-z

Stability is one of the most important challenges facing material research for organic solar cells (OSC) on their path to further commercialization. In the high-performance material system PM6:Y6 studied here, we investigate degradation mechanisms of... Read More about Traps and transport resistance are the next frontiers for stable non-fullerene acceptor solar cells.

Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology (2022)
Journal Article
Zhu, L., Zhang, M., Xu, J., Li, C., Yan, J., Zhou, G., Zhong, W., Hao, T., Song, J., Xue, X., Zhou, Z., Zeng, R., Zhu, H., Chen, C.-C., MacKenzie, R. C., Zou, Y., Nelson, J., Zhang, Y., Sun, Y., & Liu, F. (2022). Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology. Nature Materials, 21, 656–663. https://doi.org/10.1038/s41563-022-01244-y

In organic photovoltaics, morphological control of donor and acceptor domains on the nanoscale is the key for enabling efficient exciton diffusion and dissociation, carrier transport and suppression of recombination losses. To realize this, here, we... Read More about Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology.

In Situ Visualization and Quantification of Electrical Self‐Heating in Conjugated Polymer Diodes Using Raman Spectroscopy (2022)
Journal Article
Maity, S., Ramanan, C., Ariese, F., MacKenzie, R. C., & von Hauff, E. (2022). In Situ Visualization and Quantification of Electrical Self‐Heating in Conjugated Polymer Diodes Using Raman Spectroscopy. Advanced Electronic Materials, 8(7), Article 2101208. https://doi.org/10.1002/aelm.202101208

Self-heating in organic electronics can lead to anomalous electrical performance and even accelerated degradation. However, in the case of disordered organic semiconductors, self-heating effects are difficult to quantify using electrical techniques a... Read More about In Situ Visualization and Quantification of Electrical Self‐Heating in Conjugated Polymer Diodes Using Raman Spectroscopy.

Using Ligand Engineering to Produce Efficient and Stable Pb–Sn Perovskite Solar Cells with Antioxidative 2D Capping Layers (2022)
Journal Article
Wang, G., Wang, C., MacKenzie, R. C., Zhu, Z., Chen, Y., Ruan, S., & Wen, S. (2022). Using Ligand Engineering to Produce Efficient and Stable Pb–Sn Perovskite Solar Cells with Antioxidative 2D Capping Layers. ACS Applied Materials and Interfaces, 14(12), 14729-14738. https://doi.org/10.1021/acsami.1c24763

Pb–Sn binary halide perovskites are a promising photovoltaic material due to their low toxicity and optical absorption spectrum well matched to the solar spectrum. However, the ready oxidation of Sn2+ to Sn4+ makes the material system currently too u... Read More about Using Ligand Engineering to Produce Efficient and Stable Pb–Sn Perovskite Solar Cells with Antioxidative 2D Capping Layers.