Singlet exciton fission is the conversion of a single excited state in organic semiconductors into two excited states of lower energy. We investigate ways to use this process for higher solar cell efficiency.
Luis M Pazos-Outón, Monika Szumilo, Robin Lamboll, Johannes M Richter, Micaela Crespo-Quesada, Mojtaba Abdi-Jalebi, Harry J Beeson, Milan Vrućinić, Mejd Alsari, Henry J Snaith, Bruno Ehrler, Richard H Friend, Felix Deschler. Photon recycling in lead iodide perovskite solar cells Science 351 (6280), 1430-1433 (2016).
Perovskite semiconductors have recently shaken up the solar cell community because no other technology has ever seen such a fast increase in efficiency. We study the fundamental properties of these materials and devices thereof.
Demet Asil, Brian J Walker, Bruno Ehrler, Yana Vaynzof, Alessandro Sepe, Sam Bayliss, Aditya Sadhanala, Philip CY Chow, Paul E Hopkinson, Ullrich Steiner, Neil C Greenham, Richard H Friend. Role of PbSe structural stabilization in photovoltaic cells Advanced Functional Materials 25 (6), 928-935 (2015).
Quantum dots are highly tunable semiconductors with interesting properties. For example, their bandgap depends on their size, and they convert high-energy photons into multiple excitons. We study the physics of quantum dot solar cells.
S.W. Tabernig, B. Daiber, T. Wang and B. Ehrler, Enhancing silicon solar cells with singlet fission: the case for Foerster resonant energy transfer using a quantum dot intermediate, J. Photonics Energy 8, 2, Article number: 022008: 1-12 (2018)
L. Song, T. Wang, V. Koerstgens, W.J. Wang, N. Saxena, C.J. Schaffer, T. Froeschl, N. Huesing and S. Bernstorff, Wet Imprinting of Channel‐Type Superstructures in Nanostructured Titania Thin Films at Low Temperatures for Hybrid Solar Cells, ChemSusChem 11, 7: 1179-1186 (2018)
A. Karani, L. Yang, S. Bai, M. Futscher, H. J. Snaith, B. Ehrler, N. C. Greenham and D. Di, Perovskite/Colloidal Quantum Dot Tandem Solar Cells: Theoretical Modeling and Monolithic Structure, ACS Energy Lett. 3, 869-874 (2018)
J. M. Lee, M. Futscher, L. M. Pazos-Outón and B. Ehrler, Highly transparent singlet fission solar cell with multistacked thin metal contacts for tandem applications, Prog. Photovolt. : Res. Appl. 25, 1-6 (2017)
L. M. Pazos-Outón, J. M. Lee, M. Futscher, A. Kirch, M. Tabachnyk, R. H. Friend and B. Ehrler, A Silicon–Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability, ACS Energy Lett. 2, 2: 476-480 (2017)
T. Wang, B. Daiber, J. M. Frost, S. Mann, E.C. Garnett, A. Walsh and B. Ehrler, Indirect to direct bandgap transition in methylammonium lead halide perovskite, Energy Environ. Sci. 10, 2: 509-515 (2017)