Q- Would there be any current flow when we connect both ends of a diode and can we measure it using multimeter? Ans: Well when we connect both sides of a diode, it is actually the same case when we connect the n-type and p-type material at the junction. There would be diffusion of charges i.e. […]
Tag: semiconductor
Making a Diode
Now we’ll see how the above described two types are used to manufacture a diode. We have the p-type and n-type semiconductors as follow: Now we combine the two types of materials as follow and we have to observe what would happen when we combine the two: When we combine the two types of material, […]
Mass action law
This law states the relation between concentrations of minority and majority carriers at a constant temperature. It states that product of concentration of majority and minority carrier is constant at fixed temperature. According to the law n * p = ni2 at constant temperature ni2 is the intrinsic concentration given by and is constant at a temperature […]
Atomic structure: Semiconductors
Diode is made by combining different type of semi conducting materials known as p-type semiconductor and n-type semi conductor. We have the pure semi conductor as combinations of silicon atom forming four covalent bonds with other silicon atoms as shown below: P-type semiconductor: This type of semiconducting material is made by defusing impurity of trivalent […]
Effect of temperature on the material
Insulators: With increase in temperature, the conducting property increases. So we call the semi-conductor material have negative temperature coefficient i.e. with increase in temperature, resistance decreases. Semiconductors: With increase in temperature, the conductivity of the semi-conductor material increases. As with increase in temperature, outermost electrons acquire energy and hence by acquiring energy, the outermost electrons leave the […]
Types of material & their comparison
In electronic devices we mainly use 3 types of materials for manufacturing purposes. Conductor Insulator Semiconductor Conducting materials are those materials in which electrons of the outermost shell are weakly bonded with nucleus. Hence as force of attraction between nucleus and the outermost shell electrons is weak, the outermost electrons become free and roam in the […]