solar tree using nano wire solar cells
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This document discusses using nanowires to improve the efficiency of solar cells. Current solar cell technology faces problems with efficiency around 10-14% for silicon wafer cells. Nanowires can increase the surface area for light absorption and have great potential to enhance efficiency. A "solar tree" design is proposed that would use panels like leaves on a tower structure to generate renewable energy from the sun similar to how trees produce food through photosynthesis. The solar tree could power street lights, homes, industries, and save land while raising public support for renewable energy resources.
solar tree using nano wire solar cells
- 1. SOALR TREE USING NANOWIRE SOALR CELLS
- 2. 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 decades So what is our future energy sources..those are Renewable energy Resources INTRODUCTION
- 3. Renewable energy Resources solar pv wind GeothermalTidal Power hydro power
- 4. 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
- 5. 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 silicon Effcicency : 13-15 Thin film: Made of several thin layers of semiconductor material. Effciency : 12-15 Figure A Figure B Figure C
- 6. 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
- 7. NANOWIRES TO THE RESCUE • Use Nanowires! • Very small, increases surface area for light absorption • Great potential • Nanowires in solar cells • Increased efficiency
- 8. 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.
- 9. COMPONENTS OF SOLAR TREE The solar tree consists of manly five parts to design. Solar Panel. Long tower. LEDs. Batteries. Stems.
- 10. 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.
- 11. WHY IT IS BETTER THAN TRADITIONAL SYSTEMS
- 12. APPLICATIONS Street Light. House Supply. Industrial Power Supply.
- 13. ADVANTAGES No air pollution. We wouldn’t have to worry as much about future energy sources. low maintenance Land requirement is very less.
- 14. DISADVANTAGES Costly. Hazards to eyesight form solar reflectors.
- 15. 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