Fotokonduktiivsete

Fotokonduktiivsete is a term of Lithuanian origin, often translated as "photoconductive" in English. It refers to a material that exhibits a change in electrical conductivity when exposed to light. This phenomenon, known as photoconductivity, is a fundamental property utilized in various electronic devices.

When a photon of sufficient energy strikes a photoconductive material, it can excite an electron from a bound state to a free state, or from the valence band to the conduction band in a semiconductor. This creates an electron-hole pair, which increases the number of charge carriers available for electrical conduction. Consequently, the material's resistance decreases, and its conductivity increases. The greater the intensity of the incident light, the more charge carriers are generated, leading to a higher conductivity.

Photoconductive materials are essential components in many technologies. They are used in light sensors, such as those found in digital cameras, solar cells, and light meters. Photocells, which convert light energy into electrical signals, rely on this principle. Furthermore, photoconductive properties are exploited in applications like photocopiers and laser printers, where light is used to transfer images onto paper. The specific material and its properties, such as spectral sensitivity and response time, determine its suitability for different applications.