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Solar Cell


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SOLAR CELL SEMICONDUCTOR CELLS

Solar Cell is Photovoltaic cell are made of special materials. Silicon is the most widely used in PV cells. The following information illustrates the different types of PV cells created using the Silicon atoms.


SOLAR CELL SEMICONDUCTOR CELLS

LEARN AND BUILD YOUR OWN SOLAR CELL SEMICONDUCTOR CELLS

Solar Cell is Photovoltaic cell are made of special materials.

Silicon is the most widely used in PV cells. The following information illustrates the different types of PV cells created using the Silicon atoms.

Over the years of time research in the labs have have one single topic to explore, how to bring the best of efficency in PV solar cell performance.

The below information will provide an insight how technology is evolving in the design of solar cell performance.

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MONOCRYSTALLINE SOLAR CELL

A single crystal constitutes the entire structure.

This is a homogeneous form where everything is uniformly placed in a lattice-like structure in the crystal.

Moreover, the energy expedition is higher here during the process of fabrication thus affecting the “energy return time” of the solar cell.


SOLAR CELL - SILICON TYPE - MONOCRYSTALLINE

LEARN AND BUILD YOUR OWN MONOCRYSTALLINE SOLAR CELL

Preparation

A single crystal constitutes the entire structure.

This is a homogeneous form where everything is uniformly placed in a lattice-like structure in the crystal. Moreover, the energy expedition is higher here during the process of fabrication thus affecting the “energy return time” of the solar cell.

Ownership Cost

The manufacturing cost of this type of silicon cell is relatively higher.

Efficiency

This uniformity allows the cell to generate more energy and power in comparison to those crystals that have non-uniform structures.

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MULTICRYSTALLINE SOLAR CELL

Various small crystals are put together make this kind of silicon material.


SOLAR CELL - SILICON TYPE - MULTICRYSTALLINE

LEARN AND BUILD YOUR OWN SOLAR CELL SEMICONDUCTOR CELLS MULTICRYSTALLINE SOLAR CELL

Preparation

Various small crystals are put together make this kind of silicon material.

Ownership Cost

In comparison to the other options, it is cheaper and has low “energy return time”.

Efficiency

However, due to these aspects, its efficiency is not as good as the monocrystalline silicon cells.

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AMORPHOUS SILICON SOLAR CELL

AMORPHOUS SILICON SOLAR CELL is a type of silicon that has the capacity to absorb 40 times higher solar radiations in comparison to the single-crystal silicon cells.


SOLAR CELL - SILICON TYPE - AMORPHOUS SILICON SOLAR CELL

LEARN AND BUILD YOUR OWN AMORPHOUS SILICON SOLAR CELL

Preparation

It is a type of silicon that has the capacity to absorb 40 times higher solar radiations in comparison to the single-crystal silicon cells.

Ownership Cost

Due to its improved efficiency, the cost of PV cells can be drastically reduced. Various types of low-cost substrates such as plastics and glass are used to coat the amorphous silicon and thus are a perfect choice for building-integrated photovoltaic products.

Efficiency

The efficiency of such panels are higher

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POLYCRYSTALLINE THIN FILMS SOLAR CELL

POLYCRYSTALLINE THIN FILMS SOLAR CELL Many technological developments are taking place for reducing the quantity of light absorbing material that is needed in the production of solar cells.


SOLAR CELL - SILICON TYPE - POLYCRYSTALLINE THIN FILMS SOLAR CELL

LEARN AND BUILD YOUR OWN POLYCRYSTALLINE THIN FILMS SOLAR CELL

Preparation

Many technological developments are taking place for reducing the quantity of light absorbing material that is needed in the production of solar cells.

A similar thin film technology is the usage of Polycrystalline thin films.

This leads to reducing the costs involved in the entire process of cell processing and reduction in the energy conversion efficiency as well.

Ownership Cost

This leads to reducing the costs involved in the entire process of cell processing and reduction in the energy conversion efficiency as well.

Efficiency

Energy conversion efficiency is average

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COPPER INDIUM DISELENIDE SOLAR CELL

COPPER INDIUM DISELENIDE SOLAR CELL In short called as CIS, Has highest absorbitive ablity.

99% of the light that is illuminated is generally utilized in the first micrometer of the Copper Indium Diselenide.


SOLAR CELL - SILICON TYPE - COPPER INDIUM DISELENIDE SOLAR CELL

LEARN AND BUILD YOUR OWN COPPER INDIUM DISELENIDE SOLAR CELL

Preparation

In short called as CIS, Has highest absorbitive ablity.

99% of the light that is illuminated is generally utilized in the first micrometer of the Copper Indium Diselenide.

Ownership Cost

The PV panels made of CIS are relatively expensive.

Efficiency

To improve its efficiency, a small amount of gallium is added and due to this, the material is also known as copper indium gallium diselenide or CIGS photovoltaic cell.

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CADMIUM TELLURIDE SOLAR CELL

CADMIUM TELLURIDE SOLAR CELL In short called as CIS, It is a commonly used thin-film material in the making of PV cells added to change the basic properties of CdTe.


SOLAR CELL - SILICON TYPE -CADMIUM TELLURIDE SOLAR CELL

LEARN AND BUILD YOUR OWN COPPER CADMIUM TELLURIDE SOLAR CELL

Preparation

It is a commonly used thin-film material in the making of PV cells added to change the basic properties of CdTe.

Ownership Cost

Similar to CIS, CdTe, as it is called, is ideal for keeping the costs low and has a very high level of absorptive behavior. Alloys like mercury and zinc are are added to change the basic properties of CdTe.

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MATERIALS USED IN MAKING THE SINGLE CRYSTALLINE THIN FILMS GALLIUM ARSENIDE (SOURCE:AMARKETRESEARCHGAZETTE,COM)

GALLIUM ARSENIDE GaAs in short which is called as Gallium Arsenide constitutes of an alloy made of gallium and arsenic.

Gallium is an extract from Aluminum and Zinc. Arsenic is commonly available material which is highly poisonous.

The alloy’s ablity to absorb the light is very high, thus enabling even a lower thickness cell to absorb photons.

The cells made of GaAs are heat and radiation resistance. Thus GaAs is widely used in multijunction and efficiency focused solar cells.


SOLAR CELL - SILICON TYPE GALLIUM ARSENIDE

LEARN AND BUILD YOUR OWN GALLIUM ARSENIDE SOLAR CELL

GALLIUM ARSENIDE GaAs in short which is called as Gallium Arsenide constitutes of an alloy made of gallium and arsenic.

Gallium is an extract from Aluminum and Zinc. Arsenic is commonly available material which is highly poisonous. The alloy’s ablity to absorb the light is very high, thus enabling even a lower thickness cell to absorb photons.

The cells made of GaAs are heat and radiation resistance. Thus GaAs is widely used in multijunction and efficiency focused solar cells. Some of the noteworthy properties of GaAs are listed below. For Single-junction solar cells the band gap of 1.43 electron volt is desired, thus GaAs meets the requirement.

GaAs has a very high absorption capacity due to which it can absorb sunlight through a cell that is just a few microns thick. GaAs cells are heat resistant in comparison to silicon cells and work perfectly in the high temperature atmospheres as well.

Flexibility of cell design is very high in the alloys of, phosphorus, antimony, or indium, just like that of the GaAs. GaAs is highly resistant to the damage caused by radiations.

ADVANTAGES OF GALLIUM ARSENIDE

The PV cells made of GaAs has a wide range of design methods to bring the alloy. GaAs provides the flexibility to change the cell structure by adding various alloys and composition of materials.

Thus GaAs brings in highest control to designers and drives better efficiency closer to the hypothetical values. Some of the focus areas one must consider during the Solar Cell development using different materials.

1. MOLECULAR CRYSTAL STRUCTURE

The Crystal structure of the material used plays a vital role in developing the Solar power. The charge conversion ability is decided by the way these crystals are arranged in the molecular platform.

In case of poly crystalline cells or multi crystalline cells the arrangement of these orders are irregular to bring in the imbalance there by the electrons flow through the photons creating the holes. However in the single crystal structure solar cells the design is very uniform and a single material of crystal structure is used throughout the solar cell.

The crystal size and the methods used to grow or deposit such material are also considered as aspects for classifying the materials

2. ABSORPTION

The ability of the solar cell to absorb the light is called as absorption. It can be termed very well if a fallen light on the solar cell absorbs most of it to bring in the highest potential difference creation between the semiconductors.

The ability to absorb light purely depends on the type of material used to build the solar cell and energy of the photons.

3. BAND GAP

Potential difference is created when the electrons move freely between the semiconductor holes. However in order to create this some amount of energy is required to move these electrons.

A lower energy is required for “valence band” electrons movement, and a high energy is required for “conduction band”. The band gap is eventually the potential difference raised between these valence band and conduction band.

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