Sökning: "photovoltaic technology"
Visar resultat 1 - 5 av 168 avhandlingar innehållade orden photovoltaic technology.
1. Alternative Energy Harvesting and Conversion Systems Based on Nanostructured Heterostructures
Sammanfattning : Conversion and storage of the solar radiation into applicable forms of energy, using ubiquitous materials is of central importance that quests several disciplinary fields in both applied technology and fundamental science. Harnessing the solar energy received by the earth has the potential to replace the current sources of energy and it is imperative for sustainable development. LÄS MER
2. Growth and Characterization of Tandem-Junction Photovoltaic Nanowires
Sammanfattning : In order to satisfy the growing energy needs of our planet’s population, and at the same time mitigate global warming, sustainable energy sources such as solar energy are indispensable. In addition to conventional silicon-based solar cells, nanotechnology offers interesting approaches for complementary applications. LÄS MER
3. Studies of optical properties of lanthanide upconversion nanoparticles for emerging applications
Sammanfattning : YTTERBY, a small village very close to Stockholm where I live, is the place in the world which has lent its name to the largest number of elements in the periodic table, namely four - YTTRIUM, YTTERBIUM, ERBIUM and TERBIUM. Three more lanthanide elements were discovered from the now empty quarry located in this village. LÄS MER
4. In situ electron microscopy of strain-induced effects on electrical and photovoltaic properties of GaAs nanowires - site specific and quantitative studies
Sammanfattning : Semiconductor nanowires have different physical properties than their bulk counterparts due to their small physical dimensions and high surface-to-volume ratio. The nanowire geometry entails enhanced optical absorption, widened possibilities to grow material heterostructures and ability to withstand high levels of strain. LÄS MER
5. High Quality III-V Semiconductors/Si Heterostructures for Photonic Integration and Photovoltaic Applications
Sammanfattning : This thesis deals with one of the promising strategies to monolithically integrate III-V semiconductors with silicon via epitaxial lateral overgrowth (ELOG) technology and is supported by extensive experimental results. The aimed applications are light sources on silicon for electronics-photonics integration and cost effective high efficiency multijunction solar cells. LÄS MER