| 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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Gao, Feng
University of Huddersfield
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (39/39 displayed)
- 2024How Photogenerated I 2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskitescitations
- 2024Harmonizing organic photovoltaics research and development among academia and industrycitations
- 2024How Photogenerated I2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskitescitations
- 2024Understanding Antiferromagnetic Coupling in Lead-Free Halide Double Perovskite Semiconductorscitations
- 2023Wide‐Bandgap Perovskite‐Inspired Materials: Defect‐Driven Challenges for High‐Performance Optoelectronicscitations
- 2023Wide-bandgap perovskite-inspired materials: defect-driven challenges for high-performance optoelectronicscitations
- 2023How Photogenerated I2 Induces I‐rich Phase Formation in Lead Mixed Halide Perovskitescitations
- 2023Critical Insight into Pretransitional Behavior and Dielectric Tunability of Relaxor Ceramicscitations
- 2023Quantum random number generation based on a perovskite light emitting diodecitations
- 2023How to GIWAXS: Grazing Incidence Wide Angle X-Ray Scattering Applied to Metal Halide Perovskite Thin Filmscitations
- 2023How to GIWAXS: Grazing Incidence Wide Angle X‐Ray Scattering Applied to Metal Halide Perovskite Thin Filmscitations
- 2023Neuromorphic computing based on halide perovskitescitations
- 2023Racial Differences in the Association of Glucagon-like Peptide 1 Agonist Use and the Progression of Monoclonal Gammopathy of Undetermined Significance to Multiple Myeloma in US Veterans with Diabetes Mellituscitations
- 2023On‐Chip Tightly Confined Guiding and Splitting of Surface Acoustic Waves Using Line Defects in Phononic Crystalscitations
- 2023Lattice Dynamics and Electron-Phonon Coupling in Double Perovskite Cs2NaFeCl6citations
- 2022Advances in solution-processed near-infrared light-emitting diodescitations
- 2022Development of a High Perfomance Gas Thermoelectric Generator (TEG) with Possibible Use of Waste Heatcitations
- 2021Advances in solution-processed near-infrared light-emitting diodescitations
- 2021In Situ Optical Studies on Morphology Formation in Organic Photovoltaic Blendscitations
- 2021In Situ Optical Studies on Morphology Formation in Organic Photovoltaic Blendscitations
- 2021In Situ Optical Studies on Morphology Formation in Organic Photovoltaic Blendscitations
- 2021The influence of the chemical structure of selected polymers on the properties of ferroelectric ceramic-polymer compositescitations
- 2021Acoustic-radiation free surface phononic crystal resonator for in-liquid low-noise gravimetric detectioncitations
- 2020Magnetizing lead-free halide double perovskitescitations
- 2020Monolithic integration of up to 40 GHz Ge photodetectors in 3μm SOIcitations
- 2019Pulsed Terahertz Emission from Solution-Processed Lead Iodide Perovskite Filmscitations
- 2019Advanced Lateral High Aspect Ratio Test Structures for Conformality Characterization by Optical Microscopy
- 2018PillarHall LHAR structure for Thin Film Conformality Measurements
- 2018Monitoring Conformality in ALD Manufacturing
- 2018Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-offcitations
- 2018Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-offcitations
- 2016Highly conformal TiN by atomic layer deposition:growth and characterization
- 2016Band structure engineering in organic semiconductorscitations
- 2016Nucleation and conformality of iridium and iridium oxide thin films grown by atomic layer depositioncitations
- 2015Microscopic silicon-based lateral high-aspect-ratio structures for thin film conformality analysiscitations
- 2015Implementation of wavelength scanning interferometry for R2R flexible PV barrier films
- 2013Infrared spectroscopy study of a poly-silicon film for optimizing the boron-implanting dosecitations
- 2011Design of Catalytically Active Cylindrical and Macroporous Gold Microelectrodescitations
- 2010Formation of nanopatterned polymer blends in photovoltaic devicescitations
Places of action
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article
How Photogenerated I2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskites
Abstract
<p>Bandgap tunability of lead mixed halide perovskites (LMHPs) is a crucial characteristic for versatile optoelectronic applications. Nevertheless, LMHPs show the formation of iodide-rich (I-rich) phase under illumination, which destabilizes the semiconductor bandgap and impedes their exploitation. Here, it is shown that how I<sub>2</sub>, photogenerated upon charge carrier trapping at iodine interstitials in LMHPs, can promote the formation of I-rich phase. I<sub>2</sub> can react with bromide (Br<sup>−</sup>) in the perovskite to form a trihalide ion I<sub>2</sub>Br<sup>−</sup> (I<sup>δ−</sup>-I<sup>δ+</sup>-Br<sup>δ−</sup>), whose negatively charged iodide (I<sup>δ−</sup>) can further exchange with another lattice Br<sup>−</sup> to form the I-rich phase. Importantly, it is observed that the effectiveness of the process is dependent on the overall stability of the crystalline perovskite structure. Therefore, the bandgap instability in LMHPs is governed by two factors, i.e., the density of native defects leading to I<sub>2</sub> production and the Br<sup>−</sup> binding strength within the crystalline unit. Eventually, this study provides rules for the design of chemical composition in LMHPs to reach their full potential for optoelectronic devices.</p>