Solar cell is the photovoltaic device that convert the light energy ( which come from sun ) into electrical energy. This device work on the principle of photovoltaic effect.

1. Solar Cell Panel
INTRODUCTION

2. What are solar cell panels??
 Solar cell is the photovoltaic device that convert the light energy (
which come from sun ) into electrical energy.
 This device work on the principle of photovoltaic effect.
 Photovoltaic Device – The generation of voltage across the PN
junction in a semiconductor due to the absorption of light
radiation is called photovoltaic effect. The device based on this
effect is called photovoltaic device.

3. CONSTRUCTION OF SOLAR PANEL..
 Solar cell made up from silicon. A simple solar cell
consists of sandwich of ‘ silicon boron layer’ and a ‘ silicon
arsenic layer’.
 The amount of boron and arsenic present in two silicon
layers is, however, very small. The solar cell is covered
with a glass cover or a transparent plastic cover for
protection.
 A single solar cell can produce only a small amount of
electricity. The solar cell panel consists of a large number
of solar cells joined together in a definite pattern.

4. Working of solar cell panel
When a solar
panel exposed to
sunlight, the
light energies are
absorbed by a
semiconductor
materials.
Due to this
absorbed
energy, the
electrons are
liberated and
produce the
external DC
current.
The DC current is
converted into
240- volt AC
current using an
inverter for
different
applications.

5. Advantage &
disadvantage
of solar cell panel

6. .
ADVANTAGES
 It is clean and non polluting.
 It is a renewable energy
 Solar cells do not produce
noise and they are totally
silent.
 They require very little
maintenance.
 They have long life time.
DISADVANTAGES
 Solar cells or solar panels are very
expensive.
 Energy has not be stored in batteries.
 Air pollution and whether can affect the
production of electricity.
 They need large are of land to produce
more efficient power supply.
 Sun does not shine consistently
 Less efficient and costly equipment.

7. APPLICATION
• Domestic power supply.
• Electric power generation in
space.
• Drying agriculture products.
• Solar pumps are used for water
supply.
• Generating electrical power.
• To providing electrical power to
satellites.