Sökning: "Quantum dot solar cells"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden Quantum dot solar cells.

1. 1. Quantum Dot Solar Cells: Towards Environmentally Friendly Materials

   Författare :Viktor A. Öberg; Erik Johansson; Muhammet S. Toprak; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum dots; Nano-crystals; Energy conversion; Solar cells; Quantum dot solar cells; Low toxicity; Silver Sulfide; Silver Bismuth Sulfide; Lead Sulfide; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Sammanfattning : To decrease the world’s energy dependence on fossil fuels, energy production and specifically electricity production needs to shift to more sustainable alternatives. One such alternative is solar cells as they directly convert energy emitted from the sun into electricity. LÄS MER

3. 2. Development of Nanoparticle Sensitized Solar Cells

   Författare :Chunze Yuan; Hans Ågren; Anders Hagfeldt; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum dots; quantum rods; nanoparticles; solar cells; colloidal; type-II; electron extraction; alloy; organic electrolyte; energy relay; upconversion.;

   Sammanfattning : In this thesis, I have been working with the development of nanoparticle sensitized solar cells. In the subarea of quantum dot sensitized solar cells (QDSCs), I have investigated type-II quantum dots (QDs), quantum rods (QRs) and alloy QDs, and developed novel redox couples as electrolytes. LÄS MER

4. 3. Strategies for Performance Improvement of Quantum Dot Sensitized Solar Cells

   Författare :Jing Huang; Hans Ågren; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quantum dot sensitized solar cells; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

   Sammanfattning : Quantum dot sensitized solar cells (QDSCs) constitute one of the most promising low-cost solutions that are explored for the world’s needs of clean and renewable energy. Efficient, low-toxic and stable QDSCs for large-scale applications have formed the subject for the solar cell research during recent years. LÄS MER

5. 4. Luminescent Silicon Nanocrystals: From Single Quantum Dot to Light-harvesting Devices

   Författare :Jingjian Zhou; Ilya Sychugov; Jan Linnros; Peter Schall; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; silicon quantum dots; photoluminescence; quantum yield; internal quantum efficiency; luminescent solar concentrator; Optics and Photonics; Optik och fotonik;

   Sammanfattning :       Silicon (Si) serves as the basic material of the system-on-a-chip industry and photovoltaic panels nowadays. This is mostly thanks to its high abundance in the earth’s crust, thereby low cost, virtually non-toxicity, and superior stability. LÄS MER

7. 5. Spectroscopy on the Dot : Photoelectron Spectroscopy and Time-Resolved Studies of Lead Sulfide Quantum Dots for Solar Cells

   Författare :Tamara Sloboda; Ute B. Cappel; Andreas Lindblad; Lars Kloo; Regan Wilks; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

   Sammanfattning : Renewable energy is an important topic as global energy consumption continues to rise. Because the sun emits an enormous amount of energy, solar energy is a promising source. However, most of the commercial solar cell technology is manufactured in an energy demanding process and there is a need for new, easily processed materials. LÄS MER