Nonglossy paint with a relatively high absorptance.

A single photovoltaic device.

A popular term used to describe the heating effect due to the trapping of long wave (length) radiation by greenhouse gases produced from natural and human sources.

Solar radiation reflected from the ground onto a solar collector.

Amorphous silicon with a small amount of incorporated hydrogen. The hydrogen neutralizes dangling bonds in the amorphous silicon, allowing charge carriers to flow more freely.

An energy band in a semiconductor in which electrons can move freely in a solid, producing a net transport of charge.

A method of depositing thin semiconductor photovoltaic) films. With this method, physical processes, such as thermal evaporation or bombardment of ions, are used to deposit elemental semiconductor material on a substrate.

The tank of a water heater.

A power plant that generates power by combusting a fuel.

A chemical used as a preservative and in bonding agents. It is found in household products such as plywood, furniture, carpets, and some types of foam insulation. It is also a by-product of combustion and is a strong-smelling, colorless gas that is an eye ...

A type of building ventilation system that uses fans or blowers to provide fresh air to rooms when the forces of air pressure and gravity are not enough to circulate air through a building.

A commmon term refering to an electricity transmission and distribution system.

The analysis of atmospheric conditions, particularly moisture in the air.

An electric current taking a shorter or different path than intended.

An automatic valve that is opened or closed by an electromagnet.

A type of combustion heating system in which combustion air is drawn directly from outside and the products of combustion are vented directly outside. These features are beneficial in tight, energy-efficient homes because they will not depressurize a home ...

The resistance between metallic contacts and the semiconductor.

A measure of the moisture content of air; may be expressed as absolute, mixing ratio, saturation deficit, relative, or specific.

A chemical element (impurity) added in small amounts to an otherwise pure semiconductor material to modify the electrical properties of the material. An n-dopant introduces more electrons. A p-dopant creates electron vacancies (holes).

A building element that provides protection against the sun, wind, and precipitation.