Sökning: "photovoltaic devices"

Visar resultat 6 - 10 av 87 avhandlingar innehållade orden photovoltaic devices.

1. 6. Advanced Metal Oxide Semiconductors for Solar Energy Harvesting and Solar Fuel Production

   Författare :Pedram Ghamgosar; Alberto Vomiero; Nils Almqvist; Omer Nour; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photovoltaic; Semiconductors; Photoelectrochemical cell; Solar fuel; Water splitting; Hydrogen evolution; Oxygen evolution; Experimentell fysik; Experimental Physics;

   Sammanfattning : Increasing energy consumption and its environmental impacts make it necessary to look for alternative energy sources. Solar energy as huge energy source which is able to cover the terms sustainability is considered as a favorable alternative. LÄS MER

3. 7. Photoelectrochemical studies of dye-sensitized solar cells using organic dyes

   Författare :Tannia Marinado; Anders Hagfeldt; Katoh Ryuzi; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; additive; charge recombination; coadsorbent; conduction band shift; dye-sensitized; electron lifetime; electron-transfer; organic dye; photoelectrochemical; photovoltaic; sensitizer; semiconductor; solar cell; solar cell efficiency; titanium dioxide; Physical chemistry; Fysikalisk kemi;

   Sammanfattning : The dye-sensitized solar cell (DSC) is a promising efficient low-cost molecular photovoltaic device. One of the key components in DSCs is the dye, as it is responsible for the capture of sunlight. State-of-the-art DSC devices, based on ruthenium dyes, show record efficiencies of 10-12 %. LÄS MER

4. 8. Alternative Energy Harvesting and Conversion Systems Based on Nanostructured Heterostructures

   Författare :Mojtaba Gilzad Kohan; Alberto Vomiero; Andrea Li Bassi; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; light harvesting; solar supercapacitors; energy conversion; Photovoltaic; energy storage; metal oxide semiconductors; Experimentell fysik; Experimental Physics;

   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

5. 9. A molecular guide to efficient charge transport : Coordination materials for photovoltaic cells

   Författare :Hannes Michaels; Marina Freitag; Aldo Di Carlo; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coordination chemistry; energy conversion; photovoltaics; charge transport;

   Sammanfattning : Emerging solar energy conversion and energy storage technologies play a vital role in solving the present energy crisis and achieving carbon net zero. Currently, they are limited by the use of inefficient, unstable and expensive charge transport materials. LÄS MER

7. 10. Advanced Organic Hole Transport Materials for Solution-Processed Photovoltaic Devices

   Författare :Xu Bo; Sun Licheng; Karl Leo; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

   Sammanfattning : Solution-processable photovoltaic devices (PVs), such as perovskite solar cells (PSCs) and solid-state dye-sensitized solar cells (sDSCs) show great potential to replace the conventional silicon-based solar cells for achieving low-cost and large-area solar electrical energy generation in the near future, due to their easy manufacture and high efficiency. Organic hole transport materials (HTMs) play important roles in both PSCs and sDSCs, and thereby can well facilitate the hole separation and transportation, for obtaining high performance solar cells. LÄS MER