06-05-2019, 10:28 AM
Solid State Lighting LED (LIGHT EMITTING DIODES) light
LEDs are semiconductor diodes, which are electronic devices that permit current to flow in only one direction. The diode is formed by bringing two slightly different materials together to form p-n junction. In a p-n junction, the 'p' type contains excess positive charge (holes, indicating the absence of electrons) while the 'n' type contains excess negative charge (electrons).
When a forward voltage is applied to the semiconducting element forming the p-n junction, electrons move from the 'n' area toward the 'p' area and holes move toward the 'n' area. Near the junction, the electrons and holes combine. As this occurs, energy is released in the form of light that is emitted by the LED
![[Image: image-43.png]](http://frontdesk.co.in/wp-content/uploads/2019/06/image-43.png)
To know more about illumination read .... http://frontdesk.co.in/building-science/illumination-in-architecture/
LEDs are semiconductor diodes, which are electronic devices that permit current to flow in only one direction. The diode is formed by bringing two slightly different materials together to form p-n junction. In a p-n junction, the 'p' type contains excess positive charge (holes, indicating the absence of electrons) while the 'n' type contains excess negative charge (electrons).
When a forward voltage is applied to the semiconducting element forming the p-n junction, electrons move from the 'n' area toward the 'p' area and holes move toward the 'n' area. Near the junction, the electrons and holes combine. As this occurs, energy is released in the form of light that is emitted by the LED
To know more about illumination read .... http://frontdesk.co.in/building-science/illumination-in-architecture/