Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"photoemission electron microscopy"”.
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Direct ray tracing for low energy electron microscopy
… is concerned with the accurate simulation of electron trajectory paths in electron optics. In particular, it investigates the use of a direct ray tracing method that employs the Cash-Karp 5th order Runge-Kutta technique in combination with a Fourier series fit to axial magnetic/electric field …
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Ground states in artificial spin ice
… is detailed. Finally, I describe real-time photoemission electron microscopy measurements of thermal fluctuations of the nanoisland magnetic moments in another new lattice geometry. All these investigations illustrate the utility of artificial spin ice in bridging the gap between …
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Switching of surface composition and morphology of binary polymer brushes
… with gradually changed selectivity. X-ray Photoelectron Spectroscopy (XPS) shows quantitatively that the top brush layer (1) is dominated by respective favourite polymers after exposure to solvents of opposite selectivity and (2) comprises both brush constituents in almost symmetric ratio after …
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Spin transport in few-layer graphene
… and SrTiO3 (110) were imaged at remanence using photoemission electron microscopy with X-ray magnetic circular dichroism contrast (XMCD-PEEM). For the electrodes on NdGaO3 (001), intermediate magnetic fields yielded domains with opposing magnetisations that formed along the length of each …
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Interface engineering and multi-modal characterization of co-evaporated metal halide perovskite films for efficient perovskite-silicon tandem solar cells
… layers on the morphology, composition, and optoelectronic properties of co-evaporated FA0.8Cs0.2PbI2.7Br0.3 films. While all seed layers reduce band gap variability compared to reference samples, CsCl and CsI promote organic precursor incorporation, yielding large apparent grains and enhanced …
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Tracking and Exploiting Charge Carrier Movement and Photochemical Processes in Light-Harvesting Energy Materials
… explored. Time-resolved optical spectroscopy and microscopy are used to reveal local charge accumulation in mixed cation perovskites, creating p- and n-type photodoped regions, unearthing a strategy for efficient light emission at low charge-injection in solar cells and light-emitting diodes. …