ppt

1. A Presentation on
Infrared plastic solar cell
Under Guidance of
Prof.Atul .B. Ballal
Department of Electrical Engineering
NBN Sinhgad School of Engineering,Pune
By
Patil Priyanka Devidas
Roll No. 43

2. TITLE: Infrared Plastic Solar Sell
INTRODUCTION
• Solar energy plays a major role in present
days.
• It is renewable source of energy.
• This presentation is about the new type of solar
cell.
• It is 5 times efficient than conventional solar
cells

3. NANOTECHNOLOGY
• Nanotechnology is about building things atom by
atom, molecule by molecule.
• Nanotechnology is billionth of a matter.
• It is defined as the study of functional structures
with dimensions in the range of 1-100 nanometer.

4. Working of solar cell
• These are photovoltaic (PV) cells based on crystalline
silicon.
• It absorbs visible sunlight and transferred to the
semiconductor material.
• This energy knocks electrons to flow freely, which
results current.
• Current is drawn from the metal contacts in PV cell.

5. FIGURE SHOWING THE WORKING OF SOLAR CELL

6. Why Nanotechnology in solar cell
• The conventional solar cells are less efficient.
• Their efficiency is very poor in cloudy days.W
• To overcome above problems, A new type of solar
cell embedded with NANOTECHNOLOGY is
developed, which is INFRARED PLASTIC SOLAR
CELL.

7. Division of sunlight

8. INFRARED PLASTIC SOLAR CELL
• A plastic solar cell can turn the suns power into
electric energy even on a cloudy day.
It uses specially designed nano particles called quantum dots

9. The quantum dots with a polymer to
make the plastic that can detect energy
in the infrared

10. INFRARED PLASTIC SOLAR CELL
• This plastic material can harness the sun’s
invisible infrared rays.
• These plastic solar cells can be taken
everywhere.
• It reduces the need to PLUG IN for power.

11. WORKING OF PLASTIC SOLAR CELL
•It requires semiconductor nanorods (7 nm
by 60nm).
•The heart of a solar cell is a 200-nm-thick film.
•It consists of cadmium
selenide (CdSe) nanorods
and blended with
P3HT(poly-
3hexylthiophene).

12. A layer only 200 nanometers thick is sandwiched
between electrodes
•It can produce 0.7V at present

13. •Aluminium coating acts
as the back electrode .
.
•Electron is collected by alluminium electrode.
•The hole is transferred to the plastic and conveyed to the
electrode, creating a current.
•When nanorods
absorb light
•they generate an
electron and an
electron hole.

14. • These are considered to be 30% more efficient.
• Their efficiency is same even on cloudy days.
• These are very compact and more practical in
application.
• These cells avoids effects like pollution.
• Fabrication is easy.
ADVANTAGES

15. APPLICATIONS
•Telecommunication Systems
Radio transceivers on mountain tops,
or telephone boxes in the country can
often be solar powered.

16. CONCLUSION
• Plastic solar cells help in exploiting the infrared
radiation.
• More effective when compared to conventional
solar cells.
• They can even work on cloudy days.
• Though at present cost is a major drawback, it can be
solved in the near future.

17. REFERENCES
1 The Coming Era of Nanotechnology; 1987. Drexler, K.
Eric, Doubleday; New York
2 A gentle introduction to the next big idea-Mark A.
Ratner, Daniel Ratner.
3 Introduction to nanotechnology- Charles P Poole,
Frank J Owens
4 The clean power revolution- Troy Helming
5 Thin film solar cells next generation photovoltaic and
its application- Y Hamakawa