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.
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.
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.
L.A. Muscarella, E.M. Hutter, F. Wittmann, Y.W. Woo, Y.-K. Jung, L. McGovern, J. Versluis, A. Walsh, H.J. Bakker and B. Ehrler, Lattice Compression Increases the Activation Barrier for Phase Segregation in Mixed-Halide Perovskites, ACS Energy Lett. 5, 3152-3158 (2020)
A.M. Alvertis, R. Pandya, L.A. Muscarella, N. Sawhney, M. Nguyen, B. Ehrler, A. Rao, R.H. Friend, A.W. Chin and B. Monserrat, Impact of exciton delocalization on exciton-vibration interactions in organic semiconductors, Phys. Rev. B 102, 8: 081122(R): 1-7 (2020)
L. McGovern, M.H. Futscher, L.A. Muscarella and B. Ehrler, Understanding the Stability of MAPbBr3 versus MAPbI3: Suppression of Methylammonium Migration and Reduction of Halide Migration, J. Phys. Chem. Lett. 11, 17: 7127-7132 (2020)
E.M. Hutter, L.A. Muscarella, F. Wittmann, J. Versluis, L. McGovern, H.J. Bakker, Y.W. Woo, Y.-K. Jung, A. Walsh and B. Ehrler, Thermodynamic Stabilization of Mixed-Halide Perovskites against Phase Segregation, Cell Rep.Phys.Sci. 1, 100120: 1-11 (2020)
C.D. Dieleman, W. Ding, L. Wu, N. Thakur, I. Bespalov, B. Daiber, Y. Ekinci, S. Castellanos and B. Ehrler, Universal Direct Pattering of Colloidal Quantum Dots by (Extreme) Ultraviolet and Electron Beam Lithography, Nanoscale 12, 20: 11306-11316 (2020)