Tag Archive | "silicon"

Mono Crystalline Solar Cells

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Mono crystalline solar cells are the earliest form of solar cells. With the growing demand of energy in the world, the concept of renewable energy has attracted the attention of not only the scientists and researchers but also the consumers and common people.

How are mono crystalline solar cells formed?

There are several steps involved in their production and formation. But the basic outline of the procedure involves the following steps.

  • Cylindrical ingots of silicon are used for the preparation of these solar cells.
  • Ingots are long rectangular or oblong blocks of silicon.
  • Thin wafers are cut out of these oblong blocks of silicon.
  • The process of sawing is used the most frequently for cutting of the wafers.
  • Great care has to be taken since the wafers are extremely thin and the dimensions have to be very accurate.
  • Another important thing which is required is a rigid glass substrate.
  • The wafers of silicon are then deposited on the glass substrate.

Appearance of Mono crystalline Solar cells

These cells appear to be polka dotted. They have gaps at all corners of the cell this shape gives them a unique appearance. Among all kinds of solar cells, these cells are the most easy to recognize.

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Benefits Of A Solar Fountain

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Solar fountains are becoming popular nowadays. A garden or a park may look incomplete without a fountain. The fountains are also used in hotels and building fronts to improve the view.The conventional fountains are powered by using electricity form the national power grid or utilizing generators.

But both of these are expensive because of the growing costs of fuel and electricity. Using a solar fountain helps you in improving the view without paying any electricity bill.

Solar Fountains

These are identical to the ordinary fountains available in the market. The only difference is that they have an additional component to power it up. These solar fountains are equipped with solar panels and may also include battery as a back up. These solar panels provide current to the pump that operates the fountain.

Principle Of Operation Of Solar Fountain

A solar fountain operates on the principle of conversion of solar energy into the electrical current. The solar panels are composed of silicon based photovoltaic cells.

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Why You Should Have Solar Energy Kit For Home?

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Solar kits are cost-effective and an economical way to generate power. Why these are so popular and beneficial? There are many reasons for that. These are easy to install and are highly durable. A brief discussion of their great advantages is given here:

Solar kits are environment-friendly

There is no emission of greenhouse gases and other hazardous chemicals in solar power generators. Therefore, all over the world governments are convincing consumers to use solar energy. They also give incentives and make these available to their people.

Residential areas are more likely to suffer from environmental hazards. Solar kits for homes are surely a great way to keep atmosphere clean and pure.

How to install a solar power kit?

Installing a solar power kit is easy. You can do the task yourself after getting full instructions. Reading or watching tutorial videos will help a lot. Illustrations about fitting the supplies are easily understandable.

Alternately, get a professional to do the job. They are trained enough to install the kit properly. It will save time and energy.

What is the total cost for solar power kit?

The initial cost for setting up the system may be high. Thanks to government that offers tax incentives for using various sources of renewable energy. For a ready-made solar system the cost may be $10 per watt. Once you get benefits and convenience of using solar energy, cost does not remain a big issue.

How long will it last?

Solar energy kits are really durable. Their long-lasting feature makes these popular and widely used in the world. These can work for almost twenty-five years or more. In this way, it gives phenomenal money saving.

How solar energy kits work in homes?

Solar energy kits have a grid of photovoltaic cells. These are made from silicon or other semi-conductors. When sunlight strikes the cells, electrons excite.

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Carbon Nano-Tubes Solar Cells

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You must have heard a lot about solar energy. It is creating hype now-a-days due to the latest technologies introduced by different companies regarding solar energy systems. Sunlight can most effectively be converted into electrical and heat energy through a number of methods. Solar cells are the most vital part of the solar energy systems that are used to convert the solar energy into electrical energy.

Photovoltaic solar cells

Photovoltaic solar cells

The name that is often used for solar cells is photovoltaic cells. The material commonly used for the manufacture of solar cells is silicon. Silicon is one of the most reliable semiconductors when it comes to solar cells. However, the latest addition to the materials used in this regard is carbon. The PV cells use carbon nano-tube coatings that are conductive in nature.

Carbon – The best alternative

Carbon circuits are one of the latest alternatives to the PV cells made up of silicon. These alternatives are being researched and monitored. The solar power industry is inclining with the passage of time. Therefore, they are presenting a number of new ideas regarding the designs and textures of the solar cells. There are a number of options available in the market other that the traditional silicon wafer solar cells.

Doping of silicon

Practicality is considered as one of the most significant factors. Therefore more practical designs are being offered to the people. Read the full story

Dye Sensitized Solar Cells

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Solar Energy is one of the most useful forms of energy and it can be produced at a very reasonable price. However the equipment required to generate Solar Power is not always feasible to implement nor affordable. The Solar Energy is quite a useful mean of generating energy and requires Solar Cells. The Solar Cells absorb the Sunlight and convert it into useful Electrical Energy. Solar Power Panels are actually composed of Solar Cells made of Silicon.

Types of Solar Cells

Types of Solar Cells

Monocrystalline and Polycrystalline Solar Cells are the most common and popular type of Solar Cells. They are manufactured by solidifying Silicon. These cells are not very energy efficient and can process only as much as 30% of the total Sunlight that strikes on their surface. These Cells are also not economic and compared to them, Dye-sensitized Solar Cells are much more convenient to use. Solar Energy has never been the better before.

The Dye-sensitized Solar Cells

The Dye-sensitized Solar Cells are very unique and different in nature. These Solar Cells are made up of Silicon as well. The Silicon is the most suitable material which can absorb Sunlight and carry forward it to be processed into Electricity. Read the full story

Features of Different Solar Cells

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A selenium based solar cell was made by Charles Frits in the year 1883. Since that time, these cells are being reproduced and new variety of solar cells is being introduced with time. There are a variety of cells that we are familiar of today. However, selenium is not used as a byproduct for the solar cells anymore.

Silicon – The most popular material for solar cells

Silicon – The most popular material for solar cells

The material that has taken place of selenium is silicon, and is becoming more and more popular with the passage of time. It has been used in the 20th century and is still being used in the various sorts of solar cells that are available today. On the other hand, there are certain materials that are hybrid of silicon and other conductors and semiconductors that are gaining momentum.

Replacement of silicon

The most common materials that are taking the place of pure silicon are cadmium telluride, amorphous silicon, and CIGS. However, there are certain semiconductors that can be used individually to create solar cells, including polymers, plastic, organic monocrystalline silicon, and dye-sensitized.

Plastic solar cells

These solar cells are extremely practical when it comes to large solar panels. They are flexible and reliable solar cells that have a number of universal applications.

Foil solar cells

The interesting thing about these solar cells is that during their manufacture, silicon is replaced by copper. They consist of copper foil instead of silicon or any other semiconductor. Copper foil is much thinner that the aluminum foil that is used in houses. Copper coil is flexible and is becoming more popular alternative to silicon.

Polymers solar cells

The best feature of the polymer solar cells is that they are available at a very reasonable price. Read the full story

Solar Cell’s Material Effects on Efficiency of Solar Cell

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With the passage of time advancements are coming in solar technology. This technology is improving and providing affordable energy. The proof of the advancement is new solar cells, the related industry is expanding and innovations are coming day by day. New one is better from the previous one. Now solar cells are available type of sizes and shapes.

Three generations of the solar cells

Three generations of the solar cells

You will find three generations of the cells which the solar industry has produced, each of them have cells of their own kind. In the very first generation you will find silicon-based cells. In the second generation variety of cells were introduced, these cells were mainly coated with a thin-film moniker and silicon is still used in these cells. To achieve maximum efficiency at low production coast, in the third generation cells the edges of the cells were cut. Every cell coming out of these generations has its own characteristic.

The solar cells are mainly differentiated by their size, shape and their semiconductor material. The solar cells having same material can also be differentiated further on the basis of unique characteristics. This characteristic separates one cell from other and also separates solar modules from one another.

Mono-crystalline solar cells

The mono-crystalline solar cell is known as father of modern solar power system. These cells are single-crystal and are made from a block of silicon known as cylindrical ingot. Read the full story

Solar Cell Elements by Generation

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A photovoltaic (PV) cell or a solar cell is itself an important element of a solar panel or module. Solar or photovoltaic cells are made up of a material (usually silicon). This material functions as a semiconductor.

Silicon Solar Cells

Silicon Solar Cells

Usually, silicon is used to produce solar cells. There is wafer-thin sized silicon that absorbs solar heat and generates electricity as either electrical current or free-flowing electrons. These electrons or electrical current is captured by diodes that are connected to the semiconductor.

Other Generations of Solar Cells

Silicon is not the only most popular and sully functional element of solar or photovoltaic cells. It is because there are two other distinct generations of solar or photovoltaic cells. Each of these two generations is having different important elements, but all generations are working to achieve the same goal.

Thin-Film or Second Generation Solar Cells

Thin-film solar or photovoltaic cells make the second generation of solar cell technology. However, the solar cells of second generation may still use the silicon as the main material source (usually amorphous silicon). In addition to this, second generation solar or photovoltaic cells also utilize other materials like copper indium gallium selenide (CIGS) and cadmium telluride (CdTe). Read the full story

Foil-Based Solar Cells

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Solar cell technology is getting more and more advanced, and new changes are being made in this technology every other day. A number of technology companies are working on solar technologies to make it better and more viable for its application. To a great extent, these companies have succeeded to make the adoption of solar technology feasible and easier, but still a long way to go.  In recent years, a new addition has been made in the solar cell technology and that is metal foil designs for the solar cell collection. Foil-based cells, copper and other materials of the same category replace silicon that is used as the semiconductor and are installed into a protective metal foil.

Traditional Solar Cells

Traditional Solar Cells

The problem with most of the conventional solar cells is that they require heavy module packaging for constant protection. However, Solar cells that are placed in stainless steel or flexible titanium foils are resistant and light in weight concurrently. These materials are even thinner than the aluminum foil that is used in household. Moreover, this material is more flexible than the household aluminum and its flexibility allows the solar cells to bend into the surfaces that are curved.

DayStar Technologies Inc.

This company has introduced a new and pioneer version of the foil-based solar cell technology in the starting of the year 2005. This company has introduced product that is called LightFoil, which was originally tailored to meet the challenges that occur to high altitude airships, orbital satellite craft and unmanned aerial vehicles.

Foil-Based Cells by Siemens

Siemens that is a reputable technology company has introduced a new use of foil with the organic solar cells. Just like the DayStar, this company has also replaced the common and popular silicon-based semiconductor. Read the full story

Solar Cells by Generations

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There are four distinct generations or categories of solar photovoltaic (PV) technology, the electricity generating heat of the solar panel and solar cells. These generations or categories represent a kind of timeline of innovations and changes that have been introduced in solar power technology. These generations and categories are separated by characteristics like application, semiconductor material and stage of development.

First Generation of Solar Cells

First Generation of Solar Cells

It is not only the oldest but also the most commercially widespread generation of the solar cells. This generation is characterized by conventional silicon wafer solar cells. These solar cells utilize thinly sliced silicon wafers that act as semiconductor. It is an important part of the solar cell that absorbs photons and by exciting its electrons to generate applicable electric current.  Currently, silicon solar cells are capable of controlling roughly 80 percent of the photovoltaic market due to their higher conversion efficiency. Although, this efficiency is expected to alter as the next generation of solar cells is more efficient and cost effective.

Second Generation of Solar Cells

This generation of solar cells is characterized by thin film and building integrated technology. The solar cells of second generation are thinner, more cost effective and more flexible than their counterparts of first generation. In this generation the types of semiconductor material has broaden. New materials have introduced that include amorphous silicon to calcium telluride and copper indium gallium selenide. It is expected that second generation’s thin-film solar cells will take over the market and eliminate the first generation’s solar cells from the trend within 5 to 10 years, but so far it is just an expectation. Read the full story

Working of Solar Panels

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The working of solar panels is not a complex thing to understand. It is very simple and can easily be understood. In this simple process, sunlight strikes a certain type of material where it excites electrons and generates a current and voltage. That voltage can be utilized to empower devices. Following is the explanation of the working of solar panels.

Silicon as Semiconductor

Silicon as Semiconductor

Silicon is obtained from the earth. It is one of the most abundant elements of the earth. It is readily avoidable in all types of sand and rocks. Silicon is a semi conductor that is used for various purposes. Copper is also used as conductor in copper wires. Rubber is an insulator that is used to coat the copper wire. Silicon is half insulator and half conductor that is why it is known as semi-conductor. Read the full story