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 15 of 15 for “"photoelectrochemical cell"”.
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An engineering analysis of natural and biomimetic self-repair processes for solar energy harvesting
… lifetimes. We demonstrate the first synthetic photoelectrochemical cell capable of mimicking key aspects of the self-repair process. Surfactant addition and removal was used to signal between the disassembly and re-assembly of a photoactive complex demonstrating photo-conversion efficiencies of …
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Layer-by-layer assembly of conducting membranes for photoelectrochemical cells
… above 0.1 mS/cm are highly desirable for photoelectrochemical cell membrane applications. Mixed conducting polymer composite PEDOT:sPPO was incorporated into LbL films and the composition ratio of the film components was varied to generate a series of films with tunable transparency and …
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Fabrication and optimization of N-Cu2O thin film using electrodeposition method for homojunction solar cell
… attention as the alternative material for solar cell application. It is abundant, low cost and non-toxic to the environment. A homojunction Cu2O is said to provide high conversion efficiency for solar cell. However, as Cu2O is a natural p-type semiconductor, it is a challenge to make an n-type …
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Developing cuprous oxide thin film characterization techniques to illuminate efficiency-limiting mechanisms in photovoltaic applications
… Hall Effect mobility measurement, and photoelectrochemical cell techniques are used in succession to determine the absorption and transport properties. The films are found to have a direct forbidden bandgap of 1.93 eV, with an absorption coefficient of greater than 10⁵ cm-¹ for photons …
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Exploring and exploiting charge-carrier confinement in semiconductor nanostructures : heterodimensionality in sub-monolayer InAs in GaAs and photoelectrolysis using type-II heterojunctions
… semiconductor-electrolyte interface (SEI) in a photoelectrochemical cell (PEC) is proposed to help increase the maximum potential that can be photo-generated, thus increasing the likelihood of a given PEC being able to split water. By solving the Schrödinger, Poisson and drift-diffusion …
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Thin film solar cells using all-electrodeposited ZnS, CdS and CdTe materials.
… research on the development of thin-film solar cells since the past few decades. This has necessitated the search for low-cost, scalable and manufacturable thin-film semiconductor deposition techniques which in turn has led to the research on electrodeposition technique as a possible candidate …
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Engineering of electroplated materials for multilayer next generation graded bandgap solar cells
… conversion efficiency of CdS/CdTe-based solar cells using multilayer graded bandgap configurations. To effect economic viability, electroplating technique was utilised as the low-cost semiconductor deposition technique. CdS and CdTe are the primary materials grown and explored in this thesis. …
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Solar water splitting for hydrogen production: development of photocatalysts based on earth abundant and biocompatible materials (TiO2 and Fe2O3)
… as photo-electrodes in a photo-electrochemical cell must fulfil a variety of thermodynamic and kinetic requirements to ensure good efficiency and durability. Since there is no material in nature satisfying all these requirements, tailoring the optical, electrical, and morphological properties of …
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Tailored diketopyrrolopyrrole-based organic dyes in photoelectrochemical cells for solar fuel synthesis
… energy to chemical feedstocks in dye-sensitised photoelectrochemical cells functionalised with molecular catalysts offers an attractive route to mitigate the current energy crisis and reduce global CO₂ emissions. However, most reports currently focus on precious metal-based light absorbers, thus …
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Investigation of a novel high temperature solid oxide electrolyzer for solar hydrogen production
… proposes and investigates a new generation of photoelectrochemical cells for solar hydrogen production based on high temperature Solid Oxide Electrolysis Cells. Therefore, a set of experiments are designed to develop and select the most promising materials and configurations. Furthermore, the …
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Spectroscopic Studies of Abiotic and Biological Nanomaterials: Silver Nanoparticles, Rhodamine 6G Adsorbed on Graphene, and c-Type Cytochromes and Type IV Pili in Geobacter sulfurreducens
… nanomaterial. And although bacterial cells are on the order of 1 µm in size, the type IV pili and multiheme c-type cytochromes produced by G. sulfurreducens can be considered to be one- and zero-dimensional nanomaterials respectively. A further connection between these systems is their …
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Aerosol Processes Enabling Solar Energy Applications
… were used to fabricate metal oxide-based solar cell devices. Aerosol-chemical vapor deposition: ACVD), a simple, one-step process operating at atmospheric pressure, was developed to deposit nanostructured metal oxide films with controlled morphologies. The as-synthesized nanostructured thin …
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Nanostructured nitrogen and carbon codoped TiO2 thin films: synthesis, structural characterization and optoelectronic properties
… applications like photocatalysis, sensors, solar cells, and memory devices because it is inexpensive, abundant, nontoxic and stable in aqueous solution. Another exciting application where TiO 2 has the potential to be a very useful catalyst is the clean hydrogen generation using solar radiation. …
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Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes
… Inspired by natural processes, dye-sensitised photoelectrochemical cells provide a platform for H2 generation from water. Fuel-forming photocathodes are currently limited by the small range of wide-bandgap p-type semiconductors available. The majority of previous reports have employed NiO, …