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Showing 1 to 20 of 37 for “"Metal Halide Perovskites"”.
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Local structure of hybrid metal-halide perovskites
… and op- toelectronic properties of the hybrid metal halide perovskite family MAPbX3 (MA+ = methylammonium, CH3NH+3 , X = Cl−, Br−). Static disorder was introduced by halide substitution through solid state synthesis, providing better stoichiometric control compared to solution based techniques. …
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Development of Metal Halide Perovskites for Memristor Applications
… RS devices generally have a two-terminal metal-insulator-metal structure, where a variety of novel materials have been employed as the insulator layer. Among them, halide perovskites have drawn extensive attention owing to their superb physical and electronic properties, including …
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Charge Carrier Localisation in Metal Halide Perovskites for Optoelectronic Applications
… carrier dynamics in semiconductors based on metal-halide perovskites. These materials have shown remarkable performance in optoelectronic applications like solar cells or light-emitting devices. They are solution-processable at low temperature using inexpensive earth-abundant reagents, have …
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Photophysics and optoelectronics of metal halide perovskites and other unconventional semiconductors
Metal Halide perovskites possess a unique set of properties, from the high absorption coefficient, the tunable bandgap and the high mobility to long range diffusion length. Impressive performances in photovoltaic applications, light-emitting diodes, lasers and photodetectors have shown the …
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Lithium-ion Battery Devices as a Method of Doping Metal Halide Perovskites
… in Chapter 4 considers Ruddlesden-Popper 2D/3D perovskites from an energy storage point of view. In doing so, the macroscopic lithiation processes that occur when a perovskite electrode is subjected to galvanostatic cycling are discussed. It is shown that a mixed 2D/3D phase optimises the …
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Pale black dot: a field trip to the multidimensional world of metal halide perovskites
Metal halide perovskites have recently emerged as promising alternatives to conventional semiconductors. However, their insufficient stability against external stressors continues to hinder their commercialisation. Here, we explore an additive-induced self-assembling two-dimensional capping layer …
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High-Throughput Experimentation for the Study of Structure-Property Relationships in Metal Halide Perovskites for Optoelectronic Applications.
North Carolina State University Theses Material Science and Engineering.
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Towards High-Performance Multi-Junction Perovskite Solar Cells: Fabrication, Interlayer Design, and Characterisation
Metal halide perovskites have emerged as a leading class of materials in the development of next-generation optoelectronic technologies. Their exceptional properties, including high absorption coefficients, long carrier diffusion lengths, and tuneable bandgaps, have driven remarkable progress, …
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On-Site Synthesis of Halide Perovskite Nanocrystals with Sub-50 nm Positional Accuracy
Metal halide perovskites comprise a promising class of semiconductors with broad applications ranging from optoelectronics and photovoltaics to photocatalysis. To extend these applications to on-chip devices, on-site growth of perovskite nanocrystals with high positional accuracy must be achieved. …
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The effect of atmosphere on lead halide perovskites
Metal halide perovskites are exciting materials for low-cost optoelectronic devices such as solar cells and LEDs. At present, perovskite materials still suffer from substantial non-radiative decay, particularly under solar illumination conditions, and are therefore yet to reach their full …
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Synthesis of CsPbBr3 Quantum Dots for Photodetectors
Metal halide perovskites (MHP) represent a flourishing area of research, which is driven by both their potential applications in photovoltaics and optoelectronics and by the fundamental science behind their unique optoelectronic properties. we synthesized CsPbBr3 quantum dots (QDs) via the LARP …
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Development and Characterisation of Halide Perovskite Visible Light and X-Ray Detection Devices
… In this thesis, the unique properties of metal halide perovskites are utilised to advance both visible light and Xray detectors. However, other properties of perovskites, such as ion migration, can provide challenges when characterising performance, and so techniques to accurately measure …
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Modelling of Structure-Property Relationships in Perovskites
… this thesis, the electronic properties of cubic metal-halide ABX3 perovskites (A=Cs,MA B=Pb,Sn X=Cl,Br,I) are modelled in order to elucidate phase-dependent electronic properties and systematic accuracy. These materials are of interest for solar cell applications, and are shown to be heavily …
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Spin dynamics of bulk and quasi-two-dimensional metal halide based perovskite semiconductors
… bulk and quasi-two-dimensional (quasi-2d) metal halide perovskites. Specifically, of their spin dependencies on lattice and many-body interactions. Many of these results were obtained in close collaboration with others, as specified throughout the dissertation. First, we report that …
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Device physics of perovskite light-emitting diodes
Metal halide perovskites have emerged as next-generation semiconductors for light emission, owing to their bright luminescence, excellent charge-transport properties, ease of processing and tunable bandgap. In less than a decade, the external quantum efficiency of perovskite light-emitting diodes …
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Approaching Novel Perovskites Photovoltaic Devices through Machine Learning and Interfacial Engineering
Organic metal halide perovskites have shown plenty of extraordinary optoelectronic properties which make them good candidates for various photovoltaic applications [1-5]. The fascinating optoelectronic properties of perovskite largely take credit to their low exciton binding energy, strong light …
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Charge and Thermoelectric Transport in Metal Halide Perovskite Semiconductors
Metal halide perovskites exhibit optoelectronic properties that hold significant potential for applications in photovoltaics, light-emitting diodes, photodetectors, X-ray detectors, and field-effect transistors (FETs). Rapid and substantial enhancements in the performance of perovskite-based …
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Development of detectors for the monitoring of mixed radiation fields
… on a photocurable polymer matrix loaded with metal halide perovskites. The material is fabricated via stereolithography, enabling the realization of complex and patient-specific detector geometries. Optical properties were investigated through spectrofluorimetric analysis and UV–vis …
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Magneto-Optical Effects in Manganese-doped Lead Halide Perovskite
… control over exciton-dopant interactions. Hybrid metal-halide perovskites are a new class of high-performance solution-processable semiconductors which combine remarkable optoelectronic performance with tolerance to structural defects and impurities. This thesis demonstrates magnetic doping of …
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Tracking and Exploiting Charge Carrier Movement and Photochemical Processes in Light-Harvesting Energy Materials
… and efficient sustainable energy solutions. Metal halide perovskites excel in the pursuit of highly efficient thin film photovoltaics and light emitters. Substitution of the monovalent cations has advanced luminescence yields and device efficiencies. In this thesis, the change in photocarrier …
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