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Generalised Framework for Controlling and Understanding Ion Dynamics with Passivated Lead Halide Perovskites
Tomi K. Baikie, Philip Calado, Krzysztof Galkowski +11
Metal halide perovskite solar cells have gained widespread attention due to their high efficiency and high defect tolerance. The absorbing perovskite layer is as a mixed electron-i…
The Validity Window of Space-Charge-Limited Current Measurements of Metal Halide Perovskite Devices
William R. Fisher, Philip Calado, Jason A. Röhr +5
Space-charge-limited current (SCLC) measurements are used to estimate charge carrier mobilities and electronic trap densities of semiconductors by analysing the current density-vol…
Mapping Microstructural Dynamics up to the Nanosecond of the Conjugated Polymer P3HT in the Solid State
Anne A. Y. Guilbert", Mohamed Zbiri", Peter A. Finn +6
We present a detailed study of the structure-dynamics relationship of regio-regular and regio-random PEHT using different neutron scattering techniques. Deuteration is employed to…
Identifying dominant recombination mechanisms in perovskite solar cells by measuring the transient ideality factor
Phil Calado, Dan Burkitt, Jizhong Yao +7
The ideality factor determined by measuring the open circuit voltage (VOC) as function of light intensity is often used as a means to identify the dominant recombination mechanism…
Evidence for ion migration in hybrid perovskite solar cells with minimal hysteresis
Philip Calado, Andrew M. Telford, Daniel Bryant +4
Ionic migration has been proposed as a possible cause of photovoltaic current-voltage hysteresis in hybrid perovskite solar cells. However, a major objection to this hypothesis is…
Do ultrafast exciton-polaron decoherence dynamics govern photocarrier generation efficiencies in polymer solar cells?
E. Vella, H. Li, P. Gregoire +7
All-organic-based photovoltaic solar cells have attracted considerable attention because of their low-cost processing and short energy payback time. In such systems the primary dis…
Two-dimensional coherent photocurrent excitation spectroscopy in a polymer solar cell
Eleonora Vella, Pascal Grégoire, Hao Li +6
In high-performance solar cells based on polymeric semiconductors, the mechanism of photocarrier generation on -fs timescales is yet to be unravelled. In particular the dynam…
Charge mobility of discotic mesophases: A multiscale quantum/classical study
J. Kirkpatrick, V. Marcon, J. Nelson +2
A correlation is established between the molecular structure and charge mobility of discotic mesophases of hexabenzocoronene derivatives by combining electronic structure calculati…