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The ratio of the electric power produced by a photovoltaic device to the power of the sunlight incident on the device.
Industry:Energy
The period of time, at a specified temperature, that a charged battery can be stored before its capacity falls to an unusable level.
Industry:Energy
A solid-state electrical device that converts light directly into direct current electricity of voltage-current characteristics that are a function of the characteristics of the light source and the materials in and design of the device. Solar photovoltaic devices are made of various semiconductor materials including silicon, cadmium sulfide, cadmium telluride, and gallium arsenide, and in single crystalline, multicrystalline, or amorphous forms.
Industry:Energy
The voltage(s) at which a charge controller will take action to protect the batteries.
Industry:Energy
The phenomenon that occurs when photons, the "particles" in a beam of light, knock electrons loose from the atoms they strike. When this property of light is combined with the properties of semiconductors, electrons flow in one direction across a junction, setting up a voltage. With the addition of circuitry, current will flow and electric power will be available.
Industry:Energy
A feature allowing the user to adjust the voltage levels at which a charge controller will become active.
Industry:Energy
The total of all PV strings of a PV power supply system, which are electrically interconnected.
Industry:Energy
A type of electrical current, the direction of which is reversed at regular intervals or cycles. In the United States, the standard is 120 reversals or 60 cycles per second. Electricity transmission networks use AC because voltage can be controlled with relative ease.
Industry:Energy
The smallest environmentally protected, essentially planar assembly of solar cells and ancillary parts, such as interconnections, terminals, (and protective devices such as diodes) intended to generate direct current power under unconcentrated sunlight. The structural (load carrying) member of a module can either be the top layer (superstrate) or the back layer (substrate).
Industry:Energy
A dopant material, such as boron, which has fewer outer shell electrons than required in an otherwise balanced crystal structure, providing a hole, which can accept a free electron.
Industry:Energy
