Black is a color that emits radiation as heat and light, and absorbs radiation from the sun that is visible to the human eye. Black may also be used to absorb, rather than reflect or transmit, light. This article will investigate what black solar panels are and how they work.
Solar panels are devices that convert solar energy into electrical energy. They are made of various semiconducting materials like silicon which absorb sunlight which then generates electric current when an external circuit is connected between their electrodes. Solar panels have special cells that are usually encapsulated in glass or plastic, these encapsulated cells may be made of inorganic materials like silicon, potassium and magnesium but for different reasons the cells commonly used to form a solar panel are based on a type of semiconductor called cadmium telluride (CdTe).
An important property of CdTe is that it does not contain any heavy metals like lead or cadmium. This is because it allows for a continuous process of doping between layers which makes the cell more effective in absorbing light energy. The common semiconductors used as solar panels are silicon and Gallium Arsenide (GaAs).