Solar Energy ppt Definition Types Working Advantages and disadvantages Applications

1. A
Presentation
on
SOLAR CELL
Submitted By Submitted To
Vishnu Institute of Technology
▪ Ajay Kumar (276)
▪ Pradeep Varma (278)
▪ Siddhi Ganesh (297)
▪ Durga Narendra (2A8)
▪ Rajeswarchowdary (269)
J.Suri Babu,
Assistant Proffesor,
Department of Chemistry

2. Introduction
Principle of Solar Cell
Conststruction of Solar Cell
Working of Solar Cell
Types of Solar Cell
Advantages of Solar Cell
Disadvantages of Solar Cell
Applications of Solar Energy

3. ⮚ Solar cell is also called photo galvanic cell.
⮚ Solar cell is a key device that converts the light energy
into
the electrical energy in photovoltaic energy conversion.
⮚ This device work on the principle of photovoltaic effect.
Introduction

4. 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 Devices based on this effect is called
photovoltaic device.
Principle of Solar Cell

5. Construction of Solar Cell
▪ Mainly Solar cell is constructed using the crystalline Silicon
that consists of a n-type semiconductor.
▪ This is the first or upper layer also known as emitter layer.
The second layer is p-type semiconductor layer known as
base layer.
▪ Both the layers are sandwiched and hence there is formation
of p-n junction between them.
▪ The surface is coated with anti-reflection coating to avoid the
loss of incident light energy due to reflection.
▪ A proper metal contacts are made on the n-type and p-type
slide of the semiconductor for electrical connection.

7. Working of Solar Cell
❖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.

9. Types of Solar Cell
Based on nature of Silicon used, Soar cell can be classified as,
1) Monocrystalline silicon cells
(MCS)
2) Polycrystalline silicon cells (PCS)
3) Amorphous silicon cells (AS)
1) Monocrystalline silicon cells (MCS) : The MCS Cell is produced from
pure silicon (single crystal). Since the MCS is pure and defect free, the
efficiency of cell will be higher.
1) Polycrystalline silicon cells (PCS) : In PCS cell, liquid silicon is used as
raw material and PCS was obtained followed by solidification process. The
materials contain various crystalline sizes. Hence, the efficiency of this
type of cell is less than Mono crystalline .

10. 3) Amorphous silicon cells (AS) : AS was obtained by depositing silicon film
on the substrate like glass plate.

11. Advantages of Solar Cell
1.It is a renewable energy.
1.It is clean and non-polluting.
1.Reduces Electricity Bills.
1.They have long life time.
1.There are no fuel costs or fuel supply problems.

12. Disadvantages of Solar Cell
1.Reliability Depends On Location.
1.Air pollution and whether can affect the production
of electricity.
1.Uses a large area.
1.Easily Damaged.
1.Manufacturing of solar panels can harm the
environment.

13. Applications of Solar Energy
Domestic Power supply Water heating Generating Electrical power
Drying Agricultural products solar pumping system Solar street light