857 citations · 2.5k across the 14 of their papers we have counts for
14 papers
More is Different: Mobile Ions Improve the Design Tolerances of Perovskite Solar Cells
Lucy J. F. Hart, Fraser J. Angus, Yin Li +5
Many recent advances in metal halide perovskite solar cell (PSC) performance are attributed to surface treatments which passivate interfacial trap states, minimise charge recombina…
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…
The dynamics of internal electric field screening in hybrid perovskite solar cells probed using electroabsorption
Davide Moia, Ilario Gelmetti, Philip Calado +7
Electric fields arising from the distribution of charge in metal halide perovskite solar cells are critical for understanding the many weird and wonderful optoelectronic properties…
Driftfusion: An open source code for simulating ordered semiconductor devices with mixed ionic-electronic conducting materials in one-dimension
Philip Calado, Ilario Gelmetti, Benjamin Hilton +3
The recent emergence of lead-halide perovskites as active layer materials for thin film semiconductor devices including solar cells, light emitting diodes, and memristors has motiv…
Design and evaluation of conjugated polymers with polar side chains as electrode materials for electrochemical energy storage in aqueous electrolytes
Davide Moia, Alexander Giovannitti, Anna A. Szumska +7
We report the development of redox-active conjugated polymers with potential application to electrochemical energy storage. Side chain engineering enables processing of the polymer…
Is it possible for a perovskite p-n homojunction to persist in the presence of mobile ionic charge?
Philip Calado, Piers RF Barnes
Recently Cui et al. reported on the fabrication a p-n homojunction perovskite solar cell (PSC) using stoichiometric control of sequentially-deposited perovskite layers. The authors…
Ionic-to-electronic current amplification in hybrid perovskite solar cells: ionically gated transistor-interface circuit model explains hysteresis and impedance of mixed conducting devices
Davide Moia, Ilario Gelmetti, Phil Calado +9
Mobile ions in hybrid perovskite semiconductors introduce a new degree of freedom to electronic devices suggesting applications beyond photovoltaics. An intuitive device model desc…
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…
A salt water battery with high stability and charging rates made from solution processed conjugated polymers with polar side chains
Davide Moia, Alexander Giovannitti, Anna A. Szumska +6
We report a neutral salt water based battery which uses p-type and n-type solution processed polymer films as the cathode and the anode of the cell. The specific capacity of the el…
Influence of water intercalation and hydration on chemical decomposition and ion transport in methylammonium lead halide perovskites
Un-Gi Jong, Chol-Jun Yu, Gum-Chol Ri +4
The use of methylammonium (MA) lead halide perovskites \ce{CH3NH3PbX3} (X=I, Br, Cl) in perovskite solar cells (PSCs) has made great progress in performance efficiency during recen…
Dynamic disorder, phonon lifetimes, and the assignment of modes to the vibrational spectra of methylammonium lead halide perovskites
Aurélien M. A. Leguy, Alejandro R. Goñi, Jarvist M. Frost +11
We present Raman and terahertz absorbance spectra of methylammonium lead halide single crystals (MAPbX3, X = I, Br, Cl) at temperatures between 80 and 370 K. These results show goo…
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…
Lattice dynamics and vibrational spectra of the orthorhombic, tetragonal and cubic phases of methylammonium lead iodide
Federico Brivio, Jarvist M. Frost, Jonathan M. Skelton +7
The hybrid halide perovskite CH3NH3PbI3 exhibits a complex structural behaviour, with successive transitions between orthorhombic, tetragonal and cubic polymorphs at ca. 165 K and…