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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Turnbull, Graham Alexander
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Manipulation of structure and optoelectronic properties through bromine inclusion in a layered lead bromide perovskitecitations
- 2023Fluorescence lifetime imaging for explosive detectioncitations
- 2021Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communicationscitations
- 2020Correlating Phase Behavior with Photophysical Properties in Mixed‐Cation Mixed‐Halide Perovskite Thin Filmscitations
- 2019Low threshold polariton lasing from a solution-processed organic semiconductor in a planar microcavitycitations
- 2018Improved organic semiconductor explosive sensors for application on minefields
- 2017An investigation of the energy levels within a common perovskite solar cell device and a comparison of DC/AC surface photovoltage spectroscopy Kelvin Probe measurements of different MAPBI3 perovskite solar cell device structurescitations
- 2016Nanoimprinted distributed feedback lasers of solution processed hybrid perovskitescitations
- 2016Self-trapping and excited state absorption in fluorene homo-polymer and copolymers with benzothiadiazole and tri-phenylaminecitations
- 2015Microstructured organic semiconductors
- 2015Solvent immersion nanoimprint lithography of fluorescent conjugated polymerscitations
- 2013LED pumped polymer laser sensor for explosivescitations
- 2009The Development of Luminescent Concentrators for Pumping Organic Semiconductor Laserscitations
- 2005Holographic recording of sub-micron period gratings and photonic crystals in the photoresist SU8citations
- 2003Polymer laser fabricated by a simple micromolding processcitations
- 2002Optical properties of a light-emitting polymer directly patterned by soft lithographycitations
- 2002Index and relief gratings in polymer films for organic distributed feedback laserscitations
- 2002Fabrication of refractive index and relief gratings in polymer films for DFB lasers
- 2002Emission characteristics and photonic band structure of microstructured polymer lasers
- 2002Photonic band structure and emission characteristics of a metal-backed polymeric distributed feedback lasercitations
- 2000Tuneability of amplified spontaneous emission through control of the waveguide-mode structure in conjugated polymer filmscitations
Places of action
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article
Correlating Phase Behavior with Photophysical Properties in Mixed‐Cation Mixed‐Halide Perovskite Thin Films
Abstract
<jats:title>Abstract</jats:title><jats:p>Mixed cation perovskites currently achieve very promising efficiency and operational stability when used as the active semiconductor in thin‐film photovoltaic devices. However, an in‐depth understanding of the structural and photophysical properties that drive this enhanced performance is still lacking. Here the prototypical mixed‐cation mixed‐halide perovskite (FAPbI<jats:sub>3</jats:sub>)<jats:sub>0.85</jats:sub>(MAPbBr<jats:sub>3</jats:sub>)<jats:sub>0.15</jats:sub> is explored, and temperature‐dependent X‐ray diffraction measurements that are correlated with steady state and time‐resolved photoluminescence data are presented. The measurements indicate that this material adopts a pseudocubic perovskite α phase at room temperature, with a transition to a pseudotetragonal β phase occurring at ≈260 K. It is found that the temperature dependence of the radiative recombination rates correlates with temperature‐dependent changes in the structural configuration, and observed phase transitions also mark changes in the gradient of the optical bandgap. The work illustrates that temperature‐dependent changes in the perovskite crystal structure alter the charge carrier recombination processes and photoluminescence properties within such hybrid organic–inorganic materials. The findings have significant implications for photovoltaic performance at different operating temperatures, as well as providing new insight on the effect of alloying cations and halides on the phase behavior of hybrid perovskite materials.</jats:p>