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Solar Panels For Your Home
My name is Neville Pettersson and I have created the this site to help regular home owner’s like me make their own
Photovoltaic cells, also known as solar cells, are the working parts of solar panels. They convert solar energy into electricity through a process known as the "photoelectric effect."
This process happens because the electrons in the silicon atoms that make up the photovoltaic cell exist in various energy states, and at the highest energy state, which is achieved after absorbing energy from sunlight, they become free of the atom and are conducted away from the solar cell as electric current.
Photovoltaic cells are the type of solar power generation that is used in rooftop
solar systems and other small-
There are four types of photovoltaic cells that are commonly manufactured and used: single-
Most photovoltaic cells are single-
Polycrystalline photovoltaic cells are made of a lower grade of silicon than single-
Ribbon silicon cells are produced by forming the molten silicon into a ribbon rather
than an ingot. All three of these types of photovoltaic cell work essentially the
The last type of photovoltaic cell, amorphous silicon cells, is different from the other three in that it has no uniform crystalline structure. Amorphous silicon photovoltaic cells are also known as thin film silicon cells.
Amorphous silicon cells are manufactured by allowing very thin films of silicon to form from silicon vapor onto a base of plastic, glass, or metal in a vacuum.
The energy potential of amorphous silicon cells is less than half that of crystalline silicon cells. Also, the cells undergo a steep drop in efficiency within a few weeks after being first put to use, usually about a 15% decline after six weeks. However, they are potentially much cheaper to manufacture than crystalline cells, so research is in progress to improve the efficiency.
Photovoltaic cells are priced per unit of peak power generation, i.e., per watt, kilowatt, etc. One goal of solar-
In fact, solar power is already very close to being competitive in price with natural
gas, and can be considered competitive with coal power generation once the environmental
cost of the latter is factored in.
The efficiency or conversion efficiency of a photovoltaic cell is the percentage of solar energy hitting the cell which is converted into electricity. The higher the conversion efficiency, the greater the cell's output for a given intensity of sunlight. By increasing the conversion efficiency of solar cells, the cost per kilowatt of solar power can be reduced, given comparable manufacturing costs for the higher-
The earliest solar cells had a conversion efficiency of just one or two percent.
Today's monocrystalline photovoltaic cells are approaching just under 40% in efficiency.
|How Solar Panels Work|
|Flexible Solar Panels|