A Schottky Barrier is a metal-semiconductor junction that forms when a metal contacts a semiconductor, creating a potential energy barrier. This barrier allows current to flow in one direction more easily than the other, making it useful in electronic devices like diodes and transistors. The height of the barrier depends on the materials used, influencing the device's performance. The Schottky Barrier is named after the physicist Walter H. Schottky, who studied these junctions in the early 20th century. This type of barrier is important in applications such as solar cells and high-speed electronics, where efficient charge transport is essential.