Semiconductor materials are materials that conduct electricity between conductors and insulators. They can be pure ele-ments or compounds. Silicone is a pure element that is commonly used as a semiconductor. Gallium arsenide is a com-pound that is second most common semiconductor material after silicon. Semiconductors conduct electricity worse. This is because the increased temperature breaks electronic bands in the crystal lattice. Semiconductors are more sensitive to impurities than conductors. Semicondutors have a negative temperature coefficient of resistance of resistance, meaning their resistance decreases as temperature increases. Semiconductors are sensitive to light which can break electronic bonds and increase conductivity. Dopedsemiconductors generate current when exposed to light. The minimum energy required to promote an electron from the valence band representsband gap. Theband gap varies by material and temperature. Nowa-days 2D materials that are only one atom thick, which can control electricity flow precisely, have been developed and organic materials that can convert biological signal into electronic signals are of great use. Semiconductors are critical components in modern electronics and are essential to many industries. They are used in computing, communications, transportation, healthcare and many more.

Semiconductors, Silicon, Temperature Coefficient, Signal