Led Roadway Lighting

When night falls, street lights are always needed in the lanes to ensure pedestrian safety. This solar lamp product has light-controlled induction, automatically lights up when it is dark, and does not light during the day. Absorbing solar energy to supplement electricity and saving electricity costs.

Product Details

Led Roadway Lighting

Led Roadway LightingLed Roadway Lighting

N-type semiconductor and donor level

Doped Semiconductors Because intrinsic semiconductors do not transport electron carriers at room temperature, semiconductor devices cannot be fabricated. Thus, a substance having a different valence is used to replace an atom constituting a semiconductor, and a carrier is introduced. Such a semiconductor is called a doped semiconductor.

The n-type semiconductor and the donor level are in a doped semiconductor, and the substance that uses electrons as a main carrier is referred to as an n-type semiconductor. In the n-type silicon semiconductor, as shown in the field 1a, impurities of Group V (P, arsenic, etc.) are added. When a silicon atom is replaced with a group V atom, there is one more electron than silicon, so there appears to be a positive charge at that position.

Copyright © 2017 Nuusolar