1. Introduction Since the industrial revolution, we have attempted to use electrical energy to satisfy our needs. This enormous energy consumption rules over the performance of our companies and our economy in general. For this, we tried to find other sources that can serve our industry with less wastes and less pollution. Among these sources, there is the photovoltaic energy, which was discovered in 1839 and it represents the most suitable energy sources in our days. So what is photovoltaic energy? What are its scientific bases? Moreover, what are its effects on our economy? 2. Definition and physical Phenomenon What is solar energy? Solar energy is an energy source, which depends on the sun .This energy enables the production of electricity from photovoltaic panels or solar thermal power plants, with sunlight captured by solar panels. What is a photovoltaic solar panel? The photovoltaic effect was discovered in 1839 by the French physicist "Antoine Becquerel". A solar panel operates by the photovoltaic, which consist of creating an electromotive force due to the absorption of light energy in a solid object.This is the only way presently known to directly convert light into electricity. The photovoltaic cell is the basic element of solar photovoltaic panels. This is a silicon-based semiconductor device supplying a voltage of the order of ? 0.5 to 0.6 V.
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Transcript
1. Introduction
Since the industrial revolution, we have attempted to use electrical energy to satisfy our
needs. This enormous energy consumption rules over the performance of our companies and
our economy in general. For this, we tried to find other sources that can serve our industry
with less wastes and less pollution. Among these sources, there is the photovoltaic energy,
which was discovered in 1839 and it represents the most suitable energy sources in our days.
So what is photovoltaic energy? What are its scientific bases? Moreover, what are its effects
on our economy?
2. Definition and physical Phenomenon
What is solar energy?
Solar energy is an energy source, which depends on the sun .This energy enables the
production of electricity from photovoltaic panels or solar thermal power plants, with sunlight
captured by solar panels.
What is a photovoltaic solar panel?
The photovoltaic effect was discovered in 1839 by the French physicist "Antoine Becquerel".
A solar panel operates by the photovoltaic, which consist of creating an electromotive force
due to the absorption of light energy in a solid object.This is the only way presently known to
directly convert light into electricity. The photovoltaic cell is the basic element of solar
photovoltaic panels. This is a silicon-based semiconductor device supplying a voltage of the
order of ? 0.5 to 0.6 V.
Antoine Becquerel
1788 - 1878
1. Photons in sunlight hit the solar panel and semiconducting materials, such as silicon, absorb them.
2. Electrons (negatively charged) are knocked loose from their atoms, allowing them to flow through the material to produce electricity.
3. An array of solar cells converts solar energy into a usable amount Of direct current