Search for dissertations about: "active layer morphology"
Showing result 1 - 5 of 39 swedish dissertations containing the words active layer morphology.
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1. Morphology and material stability in polymer solar cells
Abstract : Polymer solar cells are promising in that they are inexpensive to produce, and due to their mechanical flexibility have the potential for use in applications not possible for more traditional types of solar cells. The performance of polymer solar cells depends strongly on the distribution of electron donor and acceptor material in the active layer. READ MORE
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2. Structure and morphology control of organic semiconductors for functional optoelectronic applications
Abstract : The functionality and application of organic semiconductors are largely dependent on their constituent structure and morphology. This thesis presents a number of functional and novel approaches for the control and tuning of structural and morphological features of a variety of organic semiconductor materials, and also demonstrates that these approaches can be utilized for improved device operation of field-effect transistors, organic solar cells and light-emitting electrochemical cells. READ MORE
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3. Thin films of polyfluorene:fullerene blends - Morphology and its role in solar cell performance
Abstract : The sun provides us daily with large quantities of energy in the form of light. With the world’s increasing demand of electrical energy the prospect of converting this solar light into electricity is highly tempting. In the strive towards mass-production and low cost solar cells, new types of solar cells are being developed, e.g. READ MORE
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4. Materials and Device Engineering for Efficient and Stable Polymer Solar Cells
Abstract : Polymer solar cells form a promising technology for converting sunlight into electricity, and have reached record efficiencies over 10% and lifetimes of several years. The performance of polymer solar cells depends strongly on the distribution of electron donor and acceptor materials in the active layer. READ MORE
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5. Synthesis and Characterization of Acceptor Polymers for All-Polymer Solar Cells and Photodetectors
Abstract : The development of polymer semiconductors has become an important topic due to its advantages of low cost, easy fabrication, light weight, and capability to fabricate flexible large-area devices. For example, as the need for new clean energy sources is increasing, polymer solar cells (PSCs) are being developed rapidly and becoming a promising alternative to silicon solar cells. READ MORE
