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Showing 1 to 6 of 6 for “"charge carrier relaxation"”.
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Charge carrier relaxation in fluorite-structured oxygen ion conductors /
… of electrical properties, attributed to charge carrier relaxation in electrical field, were observed in the obtained spectra. These data in complex plane plots resulted to depressed semicircles, which was assumed as consequence of existence of a distribution of relaxation times of charge …
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Charge Carrier Relaxation in Halide Perovskite Semiconductors for Optoelectronic Applications
… In this thesis, we study the early-time carrier relaxation and its impact on photoluminescence emission. We first study ultrafast carrier thermalization processes using 2D electronic spectroscopy and extract characteristic carrier thermalization times from below 10 fs to 85 fs. We then …
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Charge Carrier Dynamics of Lead Halide Perovskites Probed with Ultrafast Spectroscopy
In this thesis, we investigate the nature of charge carrier generation, relaxation and recombination in a range of lead halide perovskites. We focus on understanding whether the photophysical behaviour of these perovskite materials is like that of highly-ordered inorganic crystalline semiconductors …
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STM Study of Interfaces and Defects in 2D Materials
… TiSe2 flakes were successfully obtained. A 2 × 2 charge density wave (CDW) was clearly observed on these ultrathin flakes by scanning tunneling microscopy (STM). Accurate CDW phase transition temperature was measured by transport measurements. This work opens up a new approach to synthesize TMDCs. …
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Coupling of the electrical, mechanical and optical response in polymer/liquid-crystal composites
… effect is studied by means of dielectric relaxation spectroscopy. Two dispersion regions are observed in the dielectric spectra of the pure P(VDF-TrFE) film. They are related to the glass transition and to a charge-carrier relaxation, respectively. In PDLC films containing 10 and 60 wt% …
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Structure Characterization and Electronic Properties Investigation of Two-Dimensional Materials
… would provide critical insight into tuning of carrier mobility, charge carrier relaxation, and electron-hole recombination rates by defect engineering or varying growth condition in few-layer 1T-PtSe2 and other related 2D materials. Also, in order to investigate the layer dependency of …