An organic solar cell is a type of photovoltaic that uses organic electronics—a branch that deals with conductive organic polymers or small organic molecules for light absorption and charge transport to produce electricity from sunlight using photovoltaic effect. Organic solar cells are cheap, resulting in low production costs to form large volumes. Due to the high optical absorption coefficient () of organic molecules, large amounts of sunlight can be absorbed easily and efficiently.
The SI (Système International) unit of energy is the JOULE (J) or NEWTON-METER (N*m). The joule is also the SI unit of work.
Photosynthesis is a way to store stable energy.
Ancient bacteria used a thermal-sensing pigment called bacteriochlorophyll to detect the infrared signal generated by heat. These bacteria were the progenitors of descendants that could make chlorophyll. This pigment captures shorter, more energetic light wavelengths from the sun and uses them as a source of power.