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Photovoltaics

Photovoltaics. Photovoltaics. Photovoltaics. PV Applications. Photovoltaics. Multicrystalline silicon casting, wafers, and PV cells (. Photovoltaics. PV cells. Photovoltaics. Cross-sectional view of a PV cell, showing the photo-receptive surface and the p/n junction. Photovoltaics.

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Photovoltaics

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  1. Photovoltaics

  2. Photovoltaics

  3. Photovoltaics PV Applications

  4. Photovoltaics Multicrystalline silicon casting, wafers, and PV cells (

  5. Photovoltaics PV cells

  6. Photovoltaics Cross-sectional view of a PV cell, showing the photo-receptive surface and the p/n junction

  7. Photovoltaics An n-type material has an increased number of electrons the p-type material has vacancies as a result of missing electrons (p = positive). The p-n junction is the critical component of a functioning solar cell. The Photovoltaic Principle - Cells

  8. Photovoltaics • The majority of the light is absorbed in the “p-silicon” layer • someelectrons push through the p-n junction into • the n-silicon layer. • The freed electrons flow through the wire grid The Photovoltaic Principle

  9. Photovoltaics • One single-crystal silicon solar cell with a surface area of approximately 100 cm2 (16 in2) generates a current of 3 A at a voltage of 0.5 V when exposed to full sunshine. The Photovoltaic Principle

  10. Photovoltaics Efficiencies

  11. Photovoltaics PV Modules

  12. Photovoltaics Flexible photovoltaic modules made of amorphous silicon (a-Si) on stain - less steel

  13. Photovoltaics

  14. Photovoltaics • The light-generated current flows out of the cell surface and through a metal grid called the front contact. • The cell’s bottom layer is called the back contact and forms a bridge to an external circuit. The Photovoltaic Principle - Modules

  15. Photovoltaics I-V curve and characteristic parameters for a typical module

  16. Photovoltaics • Open circuit voltage (VOC): no current. • Pn under STC: peak power (Vn and In). • Short circuit current (ISC) The Photovoltaic Principle - Modules

  17. Photovoltaics Solar cells 100 mm x 100 mm, 36 in series An example of a typical PV module data sheet

  18. Photovoltaics • Voltage is derated by 0.0022 V/K above STC • In bright sunlight module is 35°F-70°F above the ambient temperature. The Photovoltaic Principle - Modules

  19. Photovoltaics PV System Arrangement

  20. Photovoltaics

  21. Photovoltaics Advantages of PV

  22. Photovoltaics Industry Claim

  23. Photovoltaics *)Assuming volume installations. Individual rooftop systems can be up to twice this price

  24. Photovoltaics More Cautious AEE Assessment

  25. Photovoltaics

  26. Photovoltaics

  27. Photovoltaics

  28. Photovoltaics Holographic PV Planer Concentrator - HPPC

  29. Photovoltaics Holographic PV Planer Concentrator - HPPC

  30. Solar Thermal

  31. Solar Thermal Conventional Flat Plate Collector

  32. Solar Thermal Passive Thermo-siphon Collector

  33. Solar Thermal Evacuated Tube Collector

  34. Solar Thermal Solar Hot Water System

  35. Solar Thermal

  36. Solar Thermal

  37. Solar Thermal

  38. Solar Thermal

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