P–n junction
SEMICONDUCTOR–SEMICONDUCTOR JUNCTION, FORMED AT THE BOUNDARY BETWEEN A P-TYPE AND N-TYPE SEMICONDUCTOR
P-N junction; Reverse bias; Reverse-biased; Idiot Diode; P–N junction; PN junction; Pn junction; Pn-junction; Single-junction cell; P-n; Semiconductor junction; Pn Junction; Formation of a p-n Junction; P-n junction
A p–n junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor. The "p" (positive) side contains an excess of holes, while the "n" (negative) side contains an excess of electrons in the outer shells of the electrically neutral atoms there.