Transcript
Welcome toOur Presentation About
Solar Cell
Submitted by
Totan Banik
Overview….# Introduction
# History
# Activation
# Application
# Benefit
# Future
Solar Cell
• A solar cell is an electrical device that converts the energy of light directly into electricity.
• It product electricity
from sun light.
History of Solar Cell• The photovoltaic effect was first
experimentally demonstrated by French physicist Edmond Becquerel, In 1839.
• Albert Einstein explained the
underlying mechanism of light
instigated carrier excitation—
the photoelectric effect—in 1905.
• The first practical photovoltaic
cell was publicly demonstrated on
April 25, 1954 at Bell Laboratories.
From 2002 we can see the
modern solar cell.
Activation
• Photons bombard and penetrate the cell.• They activate electrons, knocking them loose in
both silicon layers.• Some electrons in the bottom layer sling-shot to
the top of the cell.• These electrons flow into metal contacts as
electricity, moving into a circuit throughout a 60-cell module.
• Electrons flow back into the cell via a solid contact layer at the bottom, creating a closed loop or circuit.
Activation
Uses of Solar Cell
• Solar cell is popular to use
home Power service.
Solar cells are very useful in
powering space vehicles such
as satellites.
Uses of Solar Cell
• Solar powered cars, waterbus which are powered by solar cells.
Uses of Solar Cell
• Some modern calculator & cell phone powered by solar cell.
Benefit• It’s environment-friendly.
• It save our fuel cost.
• It is portable .
• Solar energy is renewable.
Future• In future solar cell & solar power will be see
we in every where.
• We will see solar cell electric Note-book.
Conclusion
• Solar cell is very useful, particularly in a time when we are concerned about greenhouse gas emissions from other energy sources.
• It will be make our goal decrease our dependence on fossil fuel
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