Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

Dye sensitised solar cells

•Download as PPTX, PDF•
•

This is an effective method of solving energy crisis in a low cost method other than photo-voltaic cell. This DSSC are more efficient and economic than traditional solar cells

1 of 14
1 DYE-SENSITIZEDSOLARCELLS JEFF JOSEPH S3, EEE
2 Preview  Introduction  Paths to modern era  Construction  Working  Advantage and disadvantages  Comparison  Conclusions
3 Introduction □A solar cell is a device which converts light energy to electrical energy. □It is not ecofriendly and economic.
4 Introduction (Contd…) □Dss cells are made with organic dyes □Converts light energy to electric energy □Eco-friendly and economic
5  Invented in 1988 by Michael Grätzel and Brian O'Regan  Michael Grätzel has been awarded the 2010 Millennium Technology prize for this invention  in the beginning the efficiency was up to 9%  At present efficiency improved to 11%  Mncs aiming to launch commercial products in future  The research is going on……. Paths to modern era
construction 6 □Electrolyte in between anode and cathode □Tio2 and dies □External circuit
7 Working Schematic representation
8 working  Dye absorbs light and covert it into electrons  Electrons moves to the anode through tio2  Electron passes through external circuit to cathode  This electron reduces triiodide to iodide-ion in the electrolyte  Iodide-ion transfers electrons to the dye  The process continuous….
9
Advantages and Disadvantages Advantages □ Ability to Work at Wider Angles and in Low Light □ Long Life □ Good Price/Performance Ratio □ Low Cost □ Mechanical Robustness □ Ability to Operate at Lower Internal Temperatures □ Lowering the electricity bills Disadvantages □ DSSC design is the use of the liquid electrolyte □ which has temperature stability problems □ costly ruthenium (dye), platinum(catalyst) □ the electrolyte solution contains volatile organic compounds (or VOC's), 10
comparison DSS Cells □ Less cost □ Flexible □ A very low sunlight is needed for the conversion □ Less efficient □ Efficiency upto 10% □ Fabrication is simple PHOTOVOLATILE CELLS □ More cost □ Not flexible □ Need a minimum sunlight for the conversion □ More efficient □ Efficiency upto 25% □ Fabrication is complex 11
Conclusion □ Good for environment □ Development of this technology is essential □ Large investments leads to a solution for country’s energy crisis □ Need of Governments direct involvement to generalise this idea □ Large change in economy. 12
Refrences □ Google □ Wikipedia □ Science direct 13
THANK YOU 14

More Related Content

Dye sensitised solar cells

  • 2. 2 Preview  Introduction  Paths to modern era  Construction  Working  Advantage and disadvantages  Comparison  Conclusions
  • 3. 3 Introduction □A solar cell is a device which converts light energy to electrical energy. □It is not ecofriendly and economic.
  • 4. 4 Introduction (Contd…) □Dss cells are made with organic dyes □Converts light energy to electric energy □Eco-friendly and economic
  • 5. 5  Invented in 1988 by Michael Grätzel and Brian O'Regan  Michael Grätzel has been awarded the 2010 Millennium Technology prize for this invention  in the beginning the efficiency was up to 9%  At present efficiency improved to 11%  Mncs aiming to launch commercial products in future  The research is going on……. Paths to modern era
  • 6. construction 6 □Electrolyte in between anode and cathode □Tio2 and dies □External circuit
  • 8. 8 working  Dye absorbs light and covert it into electrons  Electrons moves to the anode through tio2  Electron passes through external circuit to cathode  This electron reduces triiodide to iodide-ion in the electrolyte  Iodide-ion transfers electrons to the dye  The process continuous….
  • 9. 9
  • 10. Advantages and Disadvantages Advantages □ Ability to Work at Wider Angles and in Low Light □ Long Life □ Good Price/Performance Ratio □ Low Cost □ Mechanical Robustness □ Ability to Operate at Lower Internal Temperatures □ Lowering the electricity bills Disadvantages □ DSSC design is the use of the liquid electrolyte □ which has temperature stability problems □ costly ruthenium (dye), platinum(catalyst) □ the electrolyte solution contains volatile organic compounds (or VOC's), 10
  • 11. comparison DSS Cells □ Less cost □ Flexible □ A very low sunlight is needed for the conversion □ Less efficient □ Efficiency upto 10% □ Fabrication is simple PHOTOVOLATILE CELLS □ More cost □ Not flexible □ Need a minimum sunlight for the conversion □ More efficient □ Efficiency upto 25% □ Fabrication is complex 11
  • 12. Conclusion □ Good for environment □ Development of this technology is essential □ Large investments leads to a solution for country’s energy crisis □ Need of Governments direct involvement to generalise this idea □ Large change in economy. 12