Basic Materials for Electronics: Conductor, Insulator and Semiconductor Today electronics is very important in our modern life. We are surrounded by electronics devices. From morning to night, every time, every second we use electronic devices to accelerate our daily work, to make our life easier. Computer, TV, mobile and there are thousands of electronic device which are mode of diode, transistor and integrated circuits. To understand how these devices work, we first have to study and understand the semiconductor materials that neither conductors nor insulators. Semiconductor contains some free electrons but these amounts of electrons are not sufficient to use in practical application. Depending on the conductivity or presence of electrons in a material, materials are divided into three categories. 1. Conductor ...