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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 20 of 35 for “"Dye-sensitized solar cell"”.
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Integrated Tandem Dye Sensitized Solar Cell (DSSC)-Lithium Ion Battery
… types of energy harvesting technologies such as solar, thermal and wind require excess energy to be stored in batteries, which further adds to the complication and increase in cost to the overall renewable energy system. Integrating the generation and storage of solar energy in a single device …
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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. …
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Urea Pre-treatment of N2-annealed Transition Metal Oxides for Low Cost and Efficient Counter Electrodes in Dye-sensitized Solar Cell
<p>Photovoltaic cells have shown great promise as an alternative to fossil fuel-based energy sources. Dye-sensitized solar cells (DSSCs) have shown potential as low-cost replacement to silicon solar cells owing to their reduced material costs and simple fabrication techniques. Platinum (Pt) was …
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Investigation of flow-limited field-injection electrostatic spraying for nanofabrication and direct-write patterning: Application to dye-sensitized solar cells
… which can enhance the performance of dye-sensitized solar cells (DSCs), due to their promising efficiencies relative to the low cost of materials and manufacturing. Achieving high efficiency DSCs involves optimization of the absorption of light and transport of carriers in the active …
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The applications for 3d inverse opal microstructures
… but also it can be useful in designing a dye-sensitized solar cell (DSSC). The first chapter will demonstrate the properties of these colloidal particles and explain the fabrication process of 2-D and3-D colloidal microstructures. The second and third chapter will focus on the MEMS devices …
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Wearable energy-harvesting micro devices /
… electrode for ZnO/TiO2 core-shell nanoparticle dye-sensitized solar cell. The demand of wearable electronic sensors for health monitoring has been increasing in recent years. However, the primary energy sources for these devices are still batteries that need to be replaced or recharged …
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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 …
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Synthesis and characterization of nanostructured catalysts for photovoltaic applications
… properties and light harvesting potential in a dye sensitized solar cell (DSSC). Particular attention was given to develop synthetic methods to produce metal oxide photocatalysts with similar crystallite size, with different morphologies (spheres, fibers, hierarchical spheres, and globular …
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A Study on the Use of Inverse Opals Composed of Zinc Oxide Aggregate Popcorn Particles to Improve the Efficiency of Dye- Sensitized Solar Cells
… applicable to the working electrode of a dye--‐sensitized solar cell (DSSC) are explored in order to enhance efficiency. Certain compositional and structural changes to the architecture of the electrode are examined. First, the ZnO nanoparticles that are commonly utilized in DSSCs are …
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The synthesis, characterization, and application of carborane-cluster based macrocycles and boron nitride nanosheets in photovoltaics
<p>Chapter 1: Dye-sensitized solar cell (DSSC) efficiencies have not significantly improved in recent years, primarily because of their single band gap design, limitations in dye absorption energies, and the Shockley-Queisser (SQ) limit. DSSCs require incident photon energy in the visible spectrum …
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Dye sensitized solar cells: optimization of Grätzel solar cells towards plasmonic enhanced photovoltaics
… an alternate method of producing energy is using solar cells to convert sunlight into electrical energy through photovoltaic processes. Currently, the most widely commercialized solar cell is based on a single p-n junction with silicon. Silicon solar cells are able to obtain high efficiencies but …
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Investigation of stability, dynamics and scope of application of mycobacterial porin MspA: a highly versatile biomolecular resource
… of MspA by RuC2. Development of a ‘greener’ dye sensitized solar cell with the use of MspA as an electron carrier is investigated for the first time. A series of Ru(II)-phenanthroline-based dyes have been synthesized as non-toxic dyes in this regard. Chemical binding between the dyes and MspA …
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Photoanode and counter electrode modification for more efficient dye sensitized solar cells
… an alternative energy source is critical. Solar energy is one of the most promising energy sources and solar cells are the devices that convert solar radiation into electricity. Currently, the most widely used solar cell is based on p-n junction formed with crystalline silicon materials. …
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Synthesis of heteroaromatic ruthenium dyes for use as electron reservoirs in dye-sensitized solar cells
<p>Increasing the usable portion of solar spectrum is a key factor in increasing the efficiency of modern solar cells. The near-IR region of the solar spectrum is often underutilized as a means of energy production, as the photons in this region do not contain enough energy to promote electrons to …
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From Dye Sensitized Solar Cells to Organic Field Effect Transistors: A Computational Investigation into the Structural and Electronic Properties of Novel Phthalocyanines
… Finally, we propose a completely solid state dye sensitized solar cell (DSSC) design in which these chemically robust modified Pcs are sandwiched between n-TiO<sub>2</sub> and p-NiO, acting as both photosensitizer and electron shuttle. Through analysis of the electronic structure of the …
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Novel Nanostructured Titania and Titania Nanocomposites for Photovoltaics and Photocatalysis
… is becoming more and more pertinent. Demand for solar energy has experienced exponential increase over the last decade. Nanostructured TiO2 has attracted significant attention due to its nontoxicity, low cost and wide applications in photovoltaics and photocatalysis. This research is focused on …
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Photo-electrical conversion efficiency of dye sensitized solar cells prepared from Mopane leaf chlorophyll extract
… solutions is to develop a photovoltaic device (solar cells), since solar energy is abundant. Especially, Namibia receives solar radiation of 5.8 to 6.4 KWh per square meter per day – one of the highest in the world. With 8 to 11 average hours of sunshine per day throughout the year, this offers …
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