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Home > FAQ
1. waht is solar energy?
There are so many other alternative energies out there, so why Solar?
Key Advantages over other Alternative Energy Technologies:
Solar products are fully commercialized
Solar is a renewable, clean energy source
Solar is reliable and maintenance free
Solar does not require new or complex infrastructure
Solar is a distributed form of energy generation
Solar power generation coincides with peak energy demand
Solar energy is attracting fund investing
Solar manufacturing supply is well defined
Solar shares a process improvement road map with the IC industry
2.How does solar power work ?
A solar cell is a device made of semiconductor materials (such as silicon) that converts the energy in sunlight into electricity. Solar cells are manufactured with a built-in electric field, so when sunlight strikes the cell, a portion of the light is absorbed by the semiconductor materials. The solar energy knocks electrons loose from their atoms, allowing electrons to flow freely. The built-in electric field forces electrons freed by light absorption to flow in a certain direction. This flow of electron generates electricity, which can be drawn off to power various objects. The conversion of sunlight (photons) to electricity (voltage) is called the photovoltaic effect.
In a PV system, these semiconductors are produced in the form of cells, which are then assembled in a structural panel. There are many different types of panels available, and each has its particular advantages. Depending on the amount of electricity needed, these panels can then be connected in an array of any size to provide the electricity needed for a home, office, or larger facility.
Solar cells are usually small and only produce a couple of watts of power. To produce usable energy, many cells are strung together to make a module. Multiple modules are connected into an array, which are connected to a load (like a light bulb). Through the wiring the electrons have a chance to flow through the whole loop back to the layer that lost its electrons in the first place.
The electric current, as this flow is called, has done its work, making light and heat in the light bulb.
3. What is an LED?
A light emitting diode (LED) is a semiconductor device that emits visible light when electrical current passes through it, it is a special kind of diode.
4. What color of light can LED emit?
Most LEDs are monochromatic. Light color is associated with the light wavelength. LEDs made with different semiconductor materials emit lights in different wavelengths. LED light wavelengths range from 400 nanometers (blue) to 800 nanometers (red). The colors of popularly available LEDs in the market are red, orange, amber, yellow, green, blue and white.
5. Can LEDs be used to replace conventional incandescent and florescent light bulbs?
Yes and no. LEDs have increasingly been used in many different applications to replace old incandescent light bulbs. Examples include LED indicator lights for all kinds of electronic devices such as cell phone, calculators, automotive dash panel, LCD back-lighting, etc., LED seasonal decoration lights for Christmas and holidays, LED traffic signs and other LED direction signs, LED flashing lights, and so on. As currently available LEDs have limited brightness, in most cases, they can not be used to replace incandescent or florescent light bulbs for general lighting purposes.
6. What are the advantages of LEDs compared with conventional incandescent lights?
There are several obvious advantages LEDs have over traditional incandescent light bulbs, they are as follows:
Low power consumption - energy saving,
Small size and weight,
Fast switch times,
Simple to use.