A solar cell is any device that converts energy into light directly into electricity by the photovoltaic process. The term literally means photovoltaic electricity. This created the first solar cell was made by selenium, but was very inefficient. The silicon solar cell was invented by Bell Labs in the 1950s, half originally designed for their industry. semiconductor . This process was the basis for all solar cell technologies.
In the 1950s, the solar panels were extremely inefficient-less than 2% efficiency rate. Modern systems are currently using photovoltaic thin film processes and technologies to effectively clear the output more than 20% efficiency. Due to the high cost of solar panels in 1960 most Sun products were reserved for the use of satellite technologies, Government, and space exploration. However, solar technology today can be found everywhere in both commercial and residential applications. The following is a list of descriptive based on solar cell technologies.
Polysilicon cells are cut by mudslides from molten Silicon boule and then cooled. Polycrystalline silicon cells are then developed into crystals that grow in different directions. These types of Silicon are slightly less efficient than monocrystalline. They are also considerably less expensive.
Monocrystalline silicon provides maximum efficiency of all kinds available but also the most expensive, therefore, is not necessarily the best choice for all houses. These types of Silicon are among the oldest, most common and most steadfast of technologies. They are visible on rooftops or along roadsides carrying power to isolated areas. Each unit is designed with a single crystal of silicon and tends to be more efficient and more costly than the modern unit of cheaper polysilicon. Ensnaring energy surfaces are silk screened cover of silicon wafer and solar cells are produced from there. Solar panels for homes using cells in monocrystalline silicon provide the highest efficiency available in the market today.
Unclassified Silicon is used to save on materials, but it is a very low quality and unclean and also produces a less-efficient solar panel. This process is widely used in Canada and sold to the United States and European markets.
Ribbon Silicon is created through a process that cost much less manufacturing techniques of traditional. Silicon in this process is made of tiny wafer, which helps to avoid the more expensive process of sawing the silicon to create cells. The growing edge defined film fed method starts with two seed crystals, forming a thin layer of Silicon-Silicon Ribbon. And though much less expensive to produce, the efficiency of the cell is almost always reduced.
Thin film solar panels or amorphous solar panels are not set in any standard precise and sometimes have problems with stability or structure. They are manufactured by spraying Silicon in a liquid on a glass substrate. The movie is far less expensive to produce but it is also less efficient as it degrades a lot when first exposed to light.
Solar technology of cadmium tellurium is another process resulting in less efficient panels that do not use silicon. It is created using a combination of zinc, cadmium and tellurium. Unfortunately the cadmium used is extremely toxic and causes cancer, that elevates concern in circles but is toxic when inhaled powder or cadmium is digested.
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