We have introduced a new device architecture that combines advantages of double layer and blend devices and opens exciting new possibilities in device design such as selective doping.
In Chapter 8 we describe how the standard solar spectrum can be simulated with a relatively simple setup that can be built in most laboratories for a fraction of the cost of commercial simulators.
We have studied effects of film thickness and have found that those devices that have the thinnest films nm, which is near the estimated exciton diffusion length give the highest currents.
Two laminated devices are discussed in Chapter 6. A method to estimate Solar cell phd thesis optimal thickness has been introduced.
In fact, this Chapter contains a unique compilation and summary of "organic solar cell relevant knowledge" that is consistent with the experience, understanding and view of the author. This is also reflected in the long list of people mentioned in the acknowledgment and consistent with the fact that modern research relies on collaboration and teamwork.
Our results together with the recent literature indicate that heating into the liquid crystalline phase is not necessary.
It also comprises a survey of the interesting transport charge carrier mobility properties of liquid crystalline semiconductors as well as the mesogenic characterization of a series of discotic molecules from which one has been used to fabricate a single layer solar cell.
Two devices even had a clear photo-response down to a wavelength of nm. How solar cell efficiencies can be determined in a reasonable yet practical way either by setting up a solar simulator or numerical simulation is discussed in Solar cell phd thesis 8. However, the following findings may be of particular interest for both experts and newcomers in the field: The more general properties of organic semiconductors can be found in many excellent text books and other references and are only summarized briefly in the first part whereas the second part gives a more comprehensive insight into the important characteristic solar cell parameters and links between them.
The subsequent Chapters deal with the four known device architectures: All devices discussed in the Chapters on double layer, blends and laminated structures show spectral responses covering at least the wavelength range of visible light.
Chapter 7 concerns single layer devices comprising a liquid crystalline semiconductor. Each of them begins with a survey of characteristic parameters of already reported devices - including the results of this thesis - pointing out specific advantages and encountered problems.
Chapter 9 concludes with a summary of the characteristic parameters comprising all four solar cell architecture, an overall assessment, some suggestions for future investigations and a comprehensive bibliography.
However, we have also found that the shunt resistor grows 30 to times faster than the series resistor with increasing film thickness favouring thicker films for larger fill factors. Chapter 2 is aimed to introduce researchers who are planning to work on organic solar cells into this very specialised but also interdisciplinary field.
The outstanding properties of discotic liquid crystals justify the discussion of this device in a Chapter separated from the single layer device Chapter.
In Chapter 7 we have shown that dyes with liquid crystalline properties can be used as active semiconducting components in solar cells. Details of sample preparation and measurements as well as a list of publications by the author and a brief CV can be found in the Appendices in Chapter The single layer device comprising PTV shows a very strong monoton dependency of the EQE on the wavelength so that the device can be used as simple colour - or even - wavelength detector covering the entire visible range.
The object of this thesis was the investigation of various types of organic semiconductors preferably with low bandgaps in different solar cell architectures.Solar Cell Schemata Documents Similar To Solar Cells Thesis. Ames Overview NewSpace.
Space Frontier Foundation. Conjugated Polymer Based Organic Solar Cells. Uploaded by. api Solar Cell. Uploaded by. ANUJ. cosmic vision - space science for europe My PhD Thesis - Detailed Outline.
Chapter 1 of my PhD thesis "Organic Solar Cell Architectures" comprises the motivation (limited oil resources, environmental impact of fossil fuel combustion, status of present inorganic solar cell technology) and outline of the thesis.
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HIGH EFFICIENCY SEMICONDUCTOR BASED SOLAR CELLS Thesis of PhD Dissertation by István Réti Gödöllő, Hungary efficiency of the compound semiconductor solar cell by testing with it each I have arrived at developing the new high efficiency semiconductor based solar cell via high efficiency heterostructure light emitting devices.
Find A PhD. Search Funded PhD Projects, Programs & Scholarships in Solar Cells. Search for PhD funding, scholarships & studentships in the UK, Europe and around the world. Solar cell like the crystalline silicon based solar cell shown in Figure 1 above is a solid state semiconductor p-n junction device that converts sunlight into direct-current electricity through the principle of photo-voltaic effect.Download