Sökning: "Photovoltaics"

Visar resultat 21 - 25 av 136 avhandlingar innehållade ordet Photovoltaics.

1. 21. Deterministic Silicon Pillar Assemblies and their Photonic Applications

   Författare :Bikash Dev Choudhury; Anand Srinivasan; Harish Bhaskaran; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanopillar; nanowires; nanophotonics; nanofabrication; silicon; photovoltaics; second-harmonic generation; top-down approach; colloidal lithography; color filter; biosensor; Fysik; Physics; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : It is of paramount importance to our society that the environment, life style, science and amusement flourish together in a balanced way. Some trends in this direction are the increased utilization of renewable energy, like solar photovoltaics; better health care products, for example advanced biosensors; high definition TV or high resolution cameras; and novel scientific tools for better understanding of scientific observations. LÄS MER

3. 22. Leveraging HVPE for III-V/Si Integration and Mid-Infrared Photonic Device Fabrication

   Författare :Axel Strömberg; Yan-Ting Sun; Sebastian Lourdudoss; Mattias Hammar; Charles Cornet; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; HVPE; III-V Si; Photovoltaics; PEC; MIR; non-linear optics; QPM; QCL; Energiteknik; Energy Technology;

   Sammanfattning : This work covers the implementation of highly specialized epitaxial techniques enabled by the near-equilibrium hydride vapor-phase epitaxy growth process in III-V/Si integration for Si-based tandem solar cells and photoelectrochemical reactions, quasi phase matching GaP structures on GaAs substrates, and regrowth of InP:Fe on quantum cascade lasing structures.III-V/Si integration is an important topic in several fields of research with a significant one being solar energy harvesting. LÄS MER

4. 23. Sputtering-based processes for thin film chalcogenide solar cells on steel substrates

   Författare :Patrice Bras; Charlotte Platzer-Björkman; Eric Jaremalm; Jan Sterner; Veronica Bernudez; Uppsala universitet; []
   Nyckelord :CIGS; CZTS; solar cell; photovoltaics; thin film; sputtering; annealing; gallium grading; blister; uniformity; stainless steel; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

   Sammanfattning : Thin film chalcogenide solar cells are promising photovoltaic technologies. Cu(In,Ga)Se2 (CIGS)-based devices are already produced at industrial scale and record laboratory efficiency surpasses 22 %. Cu2ZnSn(S,Se)4 (CZTS) is an alternative material that is based on earth-abundant elements. LÄS MER

5. 24. Electrical and optical properties of thin film SnO2 and SnO2:F : transparent electrodes in organic photovoltaics

   Författare :Carla Daniele Canestraro; Clas Persson; Jens Tellefsen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material physics with surface physics; Materialfysik med ytfysik;

   Sammanfattning : .... LÄS MER

7. 25. Growth and optical properties of III-V semiconductor nanowires: : Studies relevant for solar cells

   Författare :Vilgaile Dagyte; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanowire; semiconductor; Photovoltaics; Epitaxy; Optoelectronics; GaAs; GaInP; Fysicumarkivet A:2018:Dagyté;

   Sammanfattning : This thesis deals with epitaxial growth and optical properties of semiconductor nanowires with implications and insights about materials for solar cells. The chapters leading up to the papers give a broader background and an introduction to the field and include nanowires and their synthesis, semiconductor properties, solar cell operational principles, light interaction with a nanowire array, and optical characterization of such arrays. LÄS MER