What Is Diodes

Diodes, also known as crystal diodes, are referred to as diodes. In addition, there are early vacuum electron diodes; It is an electronic device with a one-way conduction current. Inside the semiconductor diode there is a PN junction with two lead terminals. This electronic device has unidirectional current conductivity in the direction of the applied voltage. In general, a crystal diode is a p-n junction formed by the sintering of p-type semiconductors and n-type semiconductors. A space charge layer is formed on both sides of the interface to form a self-built electric field. When the applied voltage is equal to zero, due to the difference in the concentration of carriers on both sides of the p-n Junction, the diffusion current and the drift current caused by the self-built electric field are equal and in equilibrium, which is also the diode characteristic under normal conditions.