| People | Locations | Statistics |
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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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Cinquanta, Eugenio
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (3/3 displayed)
- 2023Blocking wide bandgap mixed halide perovskites’ decomposition through polymer inclusioncitations
- 2022Charge carrier dynamics in 2D materials probed by ultrafast THz spectroscopycitations
- 2022Time-resolved terahertz spectroscopy for probing the effects of low-temperature annealing on CsPbBr<sub>3</sub> evaporated thin-filmscitations
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article
Time-resolved terahertz spectroscopy for probing the effects of low-temperature annealing on CsPbBr<sub>3</sub> evaporated thin-films
Abstract
<jats:title>Abstract</jats:title><jats:p>The fine-tuning of the growth conditions and post-deposition treatments is of fundamental importance to improve the efficiency of photovoltaic devices based on all-inorganic metal halide perovskites like CsPbBr<jats:sub>3</jats:sub>. In this work, we used time-resolved terahertz spectroscopy (TRTS) in combination with optical characterization techniques, x-ray diffraction (XRD), and scanning electron microscopy, to probe the different properties induced by a low-temperature (180 °C) annealing treatment on evaporated CsPbBr<jats:sub>3</jats:sub> thin-films. We observed a faster build-up and relaxation dynamics in the annealed sample, accompanied by a remarkable decrease of the photoluminescence intensity and minor changes in the photoconductivity and XRD measurements as compared to the as-deposited sample. We estimated for both the samples a mobility of <jats:inline-formula><jats:tex-math><?CDATA $ = ( {1.70.5} ){10^2}$?></jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi>μ</mml:mi><mml:mo>=</mml:mo><mml:mfenced close=")" open="("><mml:mrow><mml:mn>1.7</mml:mn><mml:mo>±</mml:mo><mml:mn>0.5</mml:mn></mml:mrow></mml:mfenced><mml:mo>×</mml:mo><mml:mrow><mml:msup><mml:mn>10</mml:mn><mml:mn>2</mml:mn></mml:msup></mml:mrow></mml:math><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="joptac881bieqn1.gif" xlink:type="simple" /></jats:inline-formula> cm<jats:sup>2</jats:sup> V<jats:sup>−1</jats:sup> s<jats:sup>−1</jats:sup>. Our results suggest that the lattice reorganization induced by low-temperature annealing of evaporated CsPbBr<jats:sub>3</jats:sub> could lead to a different charge carrier-phonon coupling and to an increased contribution of non-radiative recombination channels. We found that TRTS can be effectively used to follow the changes induced by post-deposition thermal annealing of CsPbBr<jats:sub>3</jats:sub>.</jats:p>