Light-emitting device and display apparatus using the same

摘要

A light-emitting device and a display apparatus using the light-emitting device are provided. The light-emitting device includes: a p-type or n-type substrate (11); and at least one doped region (15) formed to emit light by quantum confinement in a p-n junction (14) between the doped region (15) and the substrate (11). An electrode (17,19) is formed such that the light emitted from the p-n junction of the doped region is externally emitted through both surfaces of the substrate. The light-emitting device has a higher light-emitting efficiency than porous silicon-based and nano-crystal silicon-based light-emitting devices and can externally emit the light generated from the p-n junction in two directions. All of the light emitted in two directions can be utilized, thereby maximizing light-emitting efficiency.