Hmm I know that .I was just wondering how the covalent bonds between Si and B- can be broken so the diode would return to its unbiased state.dlgoff said:The depletion region is where charge is concentrated and it can increase or decrease in width depending on the applied voltage. The crystalline material atoms don't get displaced; just the charge gets displaced.
This partCaptainMarvel1899 said:What am I missing?
CaptainMarvel1899 said:Assume we have a closed diode circuit .We connect the n type region of the diode to the positive terminal of the battery.We connect the p type region of the diode to the negative terminal of the battery.The depletion layer is increased.Now we open the circuit.Why the diode returns to its zero bias mode ?The lattice of silicon is more uniform and electrons have created bonds with unpaired electrons from Si atoms so they could not "return". What am I missing?
A diode is an electronic component that allows current to flow in only one direction. It consists of a semiconductor material with two terminals, an anode and a cathode.
A diode operates by allowing current to flow from the anode to the cathode when it is forward biased, meaning the anode is at a higher voltage than the cathode. When reverse biased, with the cathode at a higher voltage, the diode blocks current from flowing.
When a diode is in reverse bias, it acts as an insulator and blocks current from flowing. This is because the majority carriers in the semiconductor material are pushed away from the junction, creating a depletion region that prevents current flow.
Zero bias in diode operation refers to the state where the diode is not forward or reverse biased, meaning there is no external voltage applied across it. In this state, the diode will still have a small leakage current due to thermal energy.
One purpose of using a diode in reverse bias is for protection against reverse voltage. By placing a diode in reverse bias across a circuit, it will prevent any reverse voltage from damaging the components. Another purpose is for signal modulation in electronic devices.