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Showing 1 to 20 of 33 for “"Organic solar cell"”.
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Exciton behaviour at organic solar cell interfaces
Organic photovoltaics (OPVs) have emerged as a promising class of materials in the production of flexible and cheap solar cells. Polymer OPVs are typically composed of a blend of a semiconducting electron donating poly- mer with an electron accepting fullerene derivative. This blend leads to a high …
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Optimization of PEDOT: PSS thin film for organic solar cell application
… renewable energy source, the development of the organics solar cells is very promising due to the inorganic solar cell inconvenient production process and material shortness. In this work, P3HT: PCBM bulk-heterojunction devices were produced by spin coating organic layers onto ITO coated glass in …
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Titanium dioxide (TiO2) as buffer layer in organic solar cell device
Organic solar cell device has become one of the most promising ways to tackle today's energy issue by offering low production cost, light weight, mechanically flexible and possibility of large area fabrication. Poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) …
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Singlet Fission Organic Solar Cell with Long-Wavelength Absorption Using Non-fullerene Acceptors
Organic solar cells made with singlet exciton fission materials are able to convert a single photon into two charges. Paired with a long-wavelength absorbing acceptor material, singlet fission materials enable solar cells that exhibit the quantum efficiency benefits of a multi-junction solar cell, …
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Impact of polymer solution aggregation and assembly on organic solar cell morphology and device properties
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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Enhanced Charge Transport and Cell Performance of an Inverted Organic Solar Cell Via UV-ozone Treatment of ZnO
… part of the global energy demand. Silicon based solar cells have dominated the photovoltaic industry but production cost is of major concern. An alternative to silicon solar cells is organic solar cells which are cheaper, lighter, flexible and more applicable to real life situations like low …
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Optimization of gadolinium-doped zinc oxide films for diluted magnetic semiconductor and its effects on organic solar cell performance
… demonstrated by fabricating the Spin-Polarized Organic Solar Cell (Spin-OSC). It was found that the ferromagnetic Zn0.92Gd0.08O film contributed immensely to the performance of OSC. The result showed that the efficiency of Spin-OSC (0.16 %) was higher than conventional-OSC (0.04 %). Thus, this …
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Limitation of lithium fluoride (LiF) properties for passivation layer in organic solar cells application
Organic solar cell (OSC) is a low cost renewable energy. Instead of semiconductor silicon solar cell; it is a device that converts the energy of light into electrical energy using photovoltaic effect. Nowadays, global warming and emission of greenhouse effect are the sources of the destruction of …
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Optische und elektrische Spektroskopie an alternativen Absorbermaterialien für organische Solarzellen
In this thesis several issues dealing with organic photovoltaics are discussed. Optical measurements on polymers and polymer-fullerene blends are shown to demonstrate, in principle, if these materials and material combinations are suitable for organic solar cell applications. An optimal post-heat …
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Charge recombination in organic small-molecule solar cells by Jiye Lee.
To enhance the power conversion efficiency in organic solar cells, charge recombination loss needs to be minimized. First, we perform transient absorption spectroscopy to study the charge recombination dynamics of thin film bulk heterojunction of the archetype organic solar cell molecules, copper …
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Characteristics of a New Copolymer For Bulk Heterojunction Solar Cells
<p>Organic solar cells have attractive aspects like flexibility, light-weight, environment-friendliness and low-cost due to manufacturing-ease on large area substrates using roll-to-roll processing, solution casting or screen printing. Most high performance organic solar cells utilize tandem …
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Nanocomposites for Enhancing Current in Organic Solar Cells
The enhancement of charge collection in organic photovoltaics by using nanocomposite materials is investigated. Two such approaches are detailed in this thesis. Chapter 1 addresses the addition of metal nanorods to the PEDOT layer of an organic solar cell in an attempt to focus incident light for …
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Barium Oxide as an Intermediate Layer for Polymer Tandem Solar Cell
Polymer solar cells (PSCs), a member of organic solar cell family, have attracted increasing research interest. PSCs possess significant advantages over their inorganic solar cell counter parts: mechanical flexibility, light weight, low expense, and the potential to achieve roll-to-roll large-scale …
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The functionalization of fullerenes and nanocarbon materials for photovoltaics and other applications
… potential applications in photovoltaics and fuel cells. Chapter 1 gives an introduction to the chemistry and applications of fullerenes. In Chapter 2, the syntheses of cyclobutadiene-functionalized fullerenes are described, and the influence of intramolecular a-interaction on the electronic energy …
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Development of Solution-Processed Stable Silver Nanowire Networks for Transparent Electrodes
… as a back-contact for a semitransparent organic solar cell, leading to a longer device lifetime. A second process is developed towards forming a conformal coating on AgNWs based on nanosized RGO, leading to enhanced all-around stability. A flexible transparent film heater was thus made, …
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Green Organic Solar Cells from a Water Soluble Polymer and Nancrystalline TiO2
The cost of the present generation of inorganic silicon solar cells is very high and further breakthroughs in cost and efficiency using traditional materials are becoming less and less likely after over 50 years of development. Next generation organic solar cells offer a solution to the limitations …
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Influence of Solvent Additives on Stability, Performance and Morphology of Conjugated Polymer/Fullerene Based Organic Bulk Heterojunction Solar Cells
<p>Organic bulk heterojunction solar cells use polymer thin film technology which is cost effective, flexible and easily processable. P3HT:PCBM bulk heterojunction solar cell is most widely studied organic solar cell. Solvent additives have been shown to enhance power conversion efficiency, but its …
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Fundamental investigations on periodic nano- and microstructured organic solar cells
Using organic semiconducting materials in solar cells is a new approach with <br>promising possibilities. The great potential of low cost production combined <br>with mechanical flexibility gives rise to new applications. Due to the relatively simple fabrication process from solution and the …
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A parallel branch-and-bound algorithm for thin-film optical systems, with application to realizing a broadband omnidirectional antireflection coating for silicon solar cells
… antireflection coating for silicon solar energy. The design is experimentally validated using RF sputtering, and shows performance that is competitive with existing solutions based on impractical sophisticated nano-deposition techniques, as well as the more practical but also more …
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