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Showing 1 to 20 of 70 for “"Metal-Halide"”.
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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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Halogen Nuclear Quadrupole Resonance Studies of Metal Halide Systems
Made available in DSpace on 2015-05-12T21:43:24Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013375.PDF: 5076417 bytes, checksum: 0a24a2ceb36bb3c1ea3c8676f5df2e66 (MD5) Previous issue date: 1969
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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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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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Photoexcitation of rare earth and metal-halide molecules in the ultraviolet
In the search for new sources of light and gain media for lasers, lanthanide fluoride powders and rare earth tri-iodide salts in vapor phase have been studied spectroscopically by photopumping in the ultraviolet. Knowing the spectral response of these molecules with respect to incident light and …
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Chemical Modifications and Passivation Approaches in Metal Halide Perovskite Solar Cells
… of passivated and chemically modified hybrid metal halide perovskite materials and development of highly efficient charge transport layers for perovskite solar cells. We first developed an efficient electron transport layer via modification of titanium dioxide nanostructure followed by a …
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Continuous synthesis of metal halide perovskite nanoparticles with sharp and stable emission
Metal halide perovskite nanoparticles present unique and attractive optical and electronic properties, leading to promising application in optoelectronic devices such as light-emitting diodes and solar cells. The optical properties of metal halide perovskite nanoparticles are tuneable by size, …
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In-Situ and Operando Multimodal Microscopy of Metal Halide Perovskite Optoelectronic Devices
Metal-halide perovskites are materials at the forefront of the next generation of optoelectronic materials. Of particular interest is their remarkable power conversion efficiencies when incorporated into thin film solar cells. The properties of next-generation semiconductors such as perovskites are …
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Lithium-ion Battery Devices as a Method of Doping Metal Halide Perovskites
… the density of electrochemically active lead-halide layers, relative to the electrochemically inactive lithium diffusion pathways through the structure provided by butylammonium organic cations. However, the necessity for aprotic solvents in typical lithium-ion batteries engenders an issue of …
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Cadmium and Zinc Monoiodide: New Discharge Pumped Metal Halide Oscillators and Amplifiers (Lasers)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985.
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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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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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Spatially Resolved Charge Transport and Recombination in Metal-Halide Perovskite Films and Solar Cells
Metal-halide perovskites show great promise as solution-processable semiconductors for efficient solar cells and LEDs. In particular, the diffusion range of photogenerated carriers is unexpectedly long and the luminescence yield is remarkably high. While much effort has been made to improve device …
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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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Interface engineering and multi-modal characterization of co-evaporated metal halide perovskite films for efficient perovskite-silicon tandem solar cells
… deployment, up-scalable deposition methods for metal halide perovskites (MHPs) are essential. Among these, co-evaporation offers conformal coverage of textured silicon, solvent-free processing, and precise thickness control. Despite these advantages, the performance of PSTs with co-evaporated …
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Untersuchungen zur Hochtemperaturchemie quecksilberfreier Metallhalogenid-Entladungslampen mit keramischem Brenner
The development of mercury-free metal halide lamps requires a modification of the burner vessel design and of the metal halide filling, compared to mercury-containing lamp types. Metal halides as NaI, TlI, DyI3 are added to discharge lamps in order to achieve a line-rich emission spectrum, …
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Synthetic Applications of Polar Transition Metal Metallocenes
… structure of ferrocene was elucidated in 1952, metallocenes have generated a vast amount of interest. Transition metal metallocenes have previously been shown to be suitable precursors in the syntheses of novel organometallic and metallo-organic complexes, although the use of metal halide …
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