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

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DYE-SENSITIZEDSOLARCELLS
JEFF JOSEPH
S3, EEE

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Preview
 Introduction
 Paths to modern era
 Construction
 Working
 Advantage and disadvantages
 Comparison
 Conclusions

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Introduction
□A solar cell is a device which converts light energy to electrical energy.
□It is not ecofriendly and economic.

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Introduction (Contd…)
□Dss cells are made with organic dyes
□Converts light energy to electric energy
□Eco-friendly and economic

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 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
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□Electrolyte in between anode and cathode
□Tio2 and dies
□External circuit

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Working Schematic representation

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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….

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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),
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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
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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.
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13. Refrences
□ Google
□ Wikipedia
□ Science direct
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14. THANK YOU
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