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1. Dye Sensitized solar sell
Using Grape Juice

2. Grape Dye Sensitized Solar Cells
The Grape
based natural
dye was
extracted from
Red Grape using
Grape grains.

3. Basic Construction

4. • A conductive
transparent glass is
used as electrode
• A paste of titanium
dioxide is applied on
it using ‘doctor
blading’ method
Fabrication Process…

5. Electrode glass is put into dye
bath and left overnight
Dye molecules attach toTiO2
via chemical bonds.This is
called the ‘Sensitisation’
process

6.  Another conducting glass
is glued on top using an
easy melt plastic
 Liquid electrolyte is filled
through the drilled holes
 The holes are sealed and
the solar cell is complete.

7. Energy Level Diagram

8.  Original state of Dye is subsequently restored by electron
donation from the electrolyte(Redox iodide/Triodide).
 Iodide is regenerated in turn by the reduction of triiodide at
the counter electrode the circuit being completed via
electron migration through the external load.
 | Redox regeneration at the counter-electrode
(oxidation).
 |Dye regeneration reaction (reduction).
Working Principle

10. * The grape-dye dye shows the broad
absorbance peak over 450-650 nm.
* The absorbance spectrum confirms
the formation of a charge transfer
(CT) complex between grape-dye
molecules andTiO2 nanoparticles.
* The average transmittance of this dye
is around 35%.
Experimental Findings

11. DSSCs show the most promising future due to their independence,
environmentally friendly, low maintenance, and low cost

12. References
 http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6919162&tag=1.
 W. M. Campbell, K.W. Jolley, P. Wagner, K.Wagner, P. J.Walsh, K.
C. Gordon, L. S. Mende, M. K. Nazeeruddin, Q.Wang, M. Grätzel, and D. L.
Officer, Highly Efficient Porphyrin Sensitizers for Dye- Sensitized Solar Cells, J.
Phys. Chem. C Letts.Vol. 111, pp. 11760-11762, 2007.
 B. O’Regan, M. Grätzel, A low-cost, high-efficiency solar cell based on dye
sensitized colloidalTiO2 films, Nature,Vol.353, pp. 737–740, 1991.
 Z.G. Chen, F.Y. Li, C.H. Huang,Organic D-ʌ-A Dyes for Dye-Sensitized Solar
Cell, Curr. Org. Chem.Vol. 11, No. 14, pp. 1241-1258, 2007.

13. THANK YOU !