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.
Results
Showing 1 to 20 of 100 for “"Dye-sensitized"”.
-
Dye sensitized photooxidation of toxic organic wastewaters
Use of dye sensitized photooxidation is potentially a low cost means of degrading many of the hazardous compounds found in wastewaters. This study investigated the use of methylene blue as a sensitizer to degrade ortho-, meta-, and para-cresol, carbofuran and acrylonitrile. Significant reductions …
-
Commercialization potential of dye-sensitized mesoscopic solar cells
… the world's fastest growing energy market. Dye-sensitized solar cells (DSCs) are photoelectrochemical cells which mimic the natural photosynthesis process to generate solar electricity. Typically, a monolayer of dye sensitizer molecules is anchored onto a semiconductor mesoporous film such …
-
Organic Sensitizers for High Efficiency Dye-Sensitized Solar Cells
… sunlight for electricity production with dye-sensitized solar cells (DSCs). DSCs are an attractive solar technology due to processing advantages over traditional solar cells. To improve the stability of DSCs, strong surface binding dyes are important. This work studies the dual anchor dual …
-
Integrated Tandem Dye Sensitized Solar Cell (DSSC)-Lithium Ion Battery
… term photovoltaic (PV) power variability using dye sensitized solar cell (DSSC) in a tandem structure with thin film based lithium-ion battery. As lithium based batteries have been addressed as efficient charge storage system due to its high energy storage density and extended lifecycle …
-
Transparent Platinum Counter Electrode for Building Integrated Dye-sensitized Solar Cells
<p>A new method for fabrication of highly transparent Pt counter electrodes (CE) has been developed based on spray deposition of Pt nanoparticles (Pt-NPs) on hot substrates. The platinum consumption hence the cost of the counter electrode was reduced over 86%, compared to conventional Pt counter …
-
Rhenium(II) Complexes as Potential materials for Dye Sensitized Solar Cells
Tandem dye sensitized solar cells, in which both the anode and cathode are photo sensitive, had been proved to improve the overall efficiency of a DSSC. The compounds [Re(dppe)<sub>2</sub>Cl<sub>2</sub>]Cl and [Re(dppe)<sub>2</sub>O<sub>2</sub>]ClO<sub>4</sub>, where dppe is …
-
Fabricataion of Dye Sensitized Solar Cells With Enhanced Energy Conversion Efficiency
Dye sensitized solar cells (DSSCs) represent a cheap and clean technology that harnesses solar energy efficiently and have been intensively studied. How to further decrease the production cost meanwhile enhance device performance becomes the bottleneck for DSSC commercialization. The thesis focuses …
-
Dye-sensitized cobalt cubane: ultrafast photophysics probed by transient XUV spectroscopy
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
-
Photoanode and counter electrode modification for more efficient dye sensitized solar cells
… fabrication cost limits its broad applications. Dye sensitized solar cell (DSSC) is a promising low-cost alternative to the Si solar cell, but its efficiency is much lower. Improvements in materials and interfaces are needed to increase the DSSC efficiency while maintain the low cost. In this …
-
All-solid-state front-illuminated titania nanotube-based dye-sensitized solar-cells
… front-illuminated titania nanotube-based dye-sensitized solar cells with a focus on all-solid state heterojunction cells. In order to achieve the project goal, I have developed a novel and highly reliable method to transfer nanotubular TiO2 structures onto FTO, and used this unique …
-
Structure-property relationships of dyes as applied to dye-sensitized solar cells
… of structural and photovoltaic properties of dyes used in dye-sensitized solar cells. Experimental methods, including ultraviolet-visible spectroscopy, fluorescence spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy are employed to study optical and electrochemical …
-
Dye regeneration kinetics in dye sensitized solar cells studied by scanning electrochemical microscopy
In dieser Dissertation wird eine Reihe von Experimenten vorgestellt, die sich mit lokalen Messungen der Farbstoffregenrationskinetik befassen. Die Reduktion der intermediär gebildeten photooxidierten Farbstoffmoleküle durch Iodidiionen aus der Lösung wurde mit Hilfe eines elektrochemischen …
-
Dye sensitized solar cells: optimization of Grätzel solar cells towards plasmonic enhanced photovoltaics
… alternative to silicon solar cells is the dye-sensitized solar cell (DSSC) which is based on a wide band gap semiconductor sensitized with a visible light absorbing species. While DSSCs are less expensive, their efficiencies are still quite low compared to silicon. In this thesis, Grätzel …
-
Investigation of dye-sensitized solar cell performance with single chirality semiconducting carbon nanotubes
… electrical transport, and optical properties of dye-sensitized solar cells (DSSCs) assembled with single-walled carbon nanotubes (SWNTs) of a single chirality in the photoanode were investigated. Single-chirality carbon nanotubes (CNTs) allow a selection of band-gap and electron mobility. …
-
High Pressure Effects on the Band Structure and Dye-Sensitized Photospectra of Semiconductors
The effect of high pressure (to 10 kilobars) on the band edge structure of n-TiO(,2), n-CdS, and n-CdSe has been investigated using an electrochemical technique. This study presents a novel method of measuring the energy of the band positions. It was found that the 3 meV/kbar increase in the …
-
Predicting the structure and performance of dye-sensitized solar cells by computational methods.
Dye-sensitized solar cells (DSCs) are a photovoltaic technology based around light-harvesting dye molecules bound to thin semiconductor films of high surface area. Many of the highest-performing DSCs to date incorporate multiple dyes that harvest light from different regions of the solar spectrum …
-
Establishing nanoscopic structure-function relationships in the working electrodes of dye-sensitized solar cells
Dye-sensitized solar cells are a strong contender for next-generation photovoltaic technology with niche applications as solar-powered windows. The performance of a DSSC is particularly susceptible to the dye sensitizer, which is adsorbed onto the surface of a wide-band-gap semiconductor such as …
Page 1 of 5