solar tree using nano wire solar cells
TRANSCRIPT
Now a days with the growing population and
energy demand will increases we have the present
energy resources are fossil fuels such as coal,
oil, natural gases,wood. but even this stock may
not longer than a few decadesSo what is our future energy sources..those are
Renewable energy Resources
INTRODUCTION
solar cell (photovoltaic cell)
convert light into a small electrical output -milliwatts output.Si wafer
Cell is thin Si wafer
Thickness is in fractions of mm
need a bank/array of cells for useful output.
cost of cells is high but reducing.
efficiency of cells is up to 10-14%/ improving
Problems faced with
current solar cell
technology
soooo......
• Different kinds of solar cells
Monocrystalline: made of single crystalline silicon of high purity. Efficiency :15-17
Polycrystalline:, made up polycrystalline siliconEffcicency : 13-15
Thin film: Made of several thin layers of semiconductor material. Effciency : 12-15
Figure A
Figure B
Figure C
Sliced into Nano-scale
Diameters from 1 to 50nm
Nano scale Silicon has a color difference
Quantum Confinement
Nano sized Silicon shows:
Physical
Optical
Electronics properties change
Electrons occupy different energy levels
NANOWIRES TO THE RESCUE
• Use Nanowires!
• Very small, increases surface area for light
absorption
• Great potential
• Nanowires in solar cells
• Increased efficiency
WHAT IS SOLAR TREE
TREE stands for
T=TREE GENERATIING
R=RENEWABLE
E=ENERGY and
E=ELECTRICITY
This is like a tree in a structure and the panels are like leaves of the tree which produces Energy.
COMPONENTS OF SOLAR TREE
The solar tree consists of manly five parts to design.
Solar Panel.
Long tower.
LEDs.
Batteries.
Stems.
WHY WE CALL IT AS SOLAR TREE
Tree can produce their own food material for human beings by the process
called PHOTOSYNTHESIS.
Likewise in solar tree solar plates are producing energy for the society.
ADVANTAGES
No air pollution.
We wouldn’t have to worry as much about future energy sources.
low maintenance
Land requirement is very less.
CONCLUSION
Saving of land, this project is very successful one.
Incresses the effciency of solar cell using nanowires
The main aim of this project is upliftting the public
opinion on R E S