Solar cells convert sunlight into electrical energy using semiconducting materials like silicon. They are made from either monocrystalline or polycrystalline silicon. Monocrystalline solar cells are more efficient because they are made of pure silicon crystals but are more expensive to produce. Polycrsytalline solar cells contain multiple silicon crystals mixed with other materials, making them less efficient but cheaper to manufacture. Solar cells use the photovoltaic effect where light absorption generates voltage across the PN junction of the semiconductor material.

1. SOLAR CELL

2. INTRODUCTION
•We know about solar cell it is a
electronics device which convert sun
energy in to electrical energy.
•It is a natural device which
bethought given any mechanical
energy work . So many process
which we used to generate energy
but it is not pollutants.

3. WHY WE ARE USED
SEMICONDUCTOR
So many reasons why we are used
semiconductor.
If we increases temperature then
resistance is decreases.
Semiconductor material valence cell
electrons are four.
According to asthak rule when any
element have 8 electron then it is more
stable.

4. WORKING
Because of four electron in valence sell
they do not give electron of do not take
electron with any other elements.
Because of this we are doping elements
.
When penta valent impurity is mixed
then it is called n- type material and if
we are used trie valent impurity then it
is called p-type impurity.

5. HISTORY

6. TYPES OF SOLAR CELL
MONOCRYSTALLINE POLYCRYSTALLINE

7. MONOCRYSTALLINE
They are made of
single si crystal and
they give more
efficiency because they
are made of pure si
semiconductor.
But they take more
money to produce
because si is not
enough in the earth
crust.

8. Polycrystalline
Polycrystalline are made
of si and some organic
materials and they are
mixed to each other.
they do not give more
efficiency because this
is the mixer of two or
more materials

9. APPLICATION

12. PHOTOVOLTAIC EFFECT
The generation of voltage
across the PN junction in a
semiconductor due to the
absorption of light radiation is
called photovoltaic effect .the
devices based on this effect is
called photovoltaic device.

13. TYPES OF SOLAR CELL
BASED ON THE CRYSTAL USED SOLAR CELL
CAN BE CLASSIFIED AS.
MONOCRYSTALLINE SILICON CELL
POLYCRYSTALLINE CELLS
AMORPHOUS SILICON CELL