Throughout this process, a completely new region is shaped for the interface, called the depletion layer. A PN junction, when enclosed in the protecting casing and it has exterior prospects for electrical connections, kinds a PN junction diode. The phrase very first appeared inside the English language in 1804. At https://www.uk-exhibitionstands.co.uk/product-category/pop-ups-and-banner-stands/banner-stands/double-stand/