This page provides answers on how a solar silicon cell or photovoltaic (PV) modules works.

Solar energy is a renewable energy source that is produced by the sun's rays. The earth receives radiant energy from the sun in the form of electromagnetic waves, which the sun continually emits into space. This energy can be tapped indirectly as wind, biomass and hydroelectric power, and directly as solar energy (thermal and photovoltaic).

Photovoltaics (PV) is the direct conversion of sunlight into electrical current, a process known for many years. With the development of the modern silicon solar cell, light particles that penetrate the cell cause electron activity resulting in the flow of electric current through a circuit.

The greater the intensity of light, the more current a solar cell generates. The current moves through a series of cell, called modules, to a battery where it is stored. Battery storage assures the user of electricity when needed, day or night.

Solar Power and Photovoltaic

Every day, the sun delivers energy to the earth free of charge. People can use this free energy thanks to a technology called photovoltaic, which converts the sun's energy into electricity. Photovoltaic (PV) cells (Solar cells) are made of special materials mainly are semiconductors such as silicon and some metal oxides. The silicon cells convert sunlight directly into electricity. It occurs in the three energy-conversion layers. The first of these three layers necessary for energy conversion in a solar cell is the top junction layer (Negative-type semiconductor). The next layer in the structure is the core of the cell; this is the absorber layer (the P-N junction). The last of the energy-conversion layers is the back junction layer (Positive-type semiconductor).

Electricity was generated as follows:

1. Electrons separate from their atom caused by Sunlight radiation.
2. Electron hole, simply called HOLE, and electron begin to move toward the P-N junction.
3. When hole & electron come together at the P-N junction, voltage is generated. Electricity is generated, when lead wires are connected.

Detailed Description for standard Module

The crystalline silicon solar (or photovoltaic ) module is composed of solar cells with the average conversion efficiency above 16% , EVA sheet, solar glass and tedlar (TPT) back sheet compounded from fluoric-plastic and Dacron. The module adopts reliable welding technology and high-vacuum heating lamination process and is equipped with anticorrosion-treated aluminum alloy frame and watertight terminal box, according with iec61215 and the II grade standard electrically. As a result, it takes on a rational structure, has an ultraviolet aging resistance.

Design characteristics:

1. The efficiency can produce the electricity greatly in the greatest power output.
2. With defended and reflected membrane and high transparent glass, the module can increase the energy greatly.

Firm frame reliability:

1. Only for 46mm thick extremely thin positive pole anticorrosion-treated aluminum frame.
2. Safety glass and protect back sheet can avoid damage and water.
3. Pour into the terminal box that the silicon froze the glue.
4. Utilize EVA and TPT can prevent water entering effectively.

Seamless system conformity:

1. On the frame opens has 4-6 holes, is easy to install in all systems structure.
2. Provides the standard mc attachment and the 1m long electric cable.
3. Has 3 diodes in the joint box, greatly reduced the system power loss which camouflaged from the module. The solar modules are the final solar product, ready to produce electricity, interconnected and inverting the DC power they feed it into the power grid or directly supply it to customers. We are working in favor of this healthy attitude; we mean of maintaining a clean environment that will be worth living in for future generations and with our products we are making a contribution to peaceful development of our planet that will give all regions of the world equal access to energy. With the strength of the energy from the sun available everywhere and in limitless quantities both these things are possible.

Video on The Power of the Sun-The Science of the Silicon Solar Cell





Video on Introduction to Solar Photovoltaics