Surface-emitting light emitting device

Details Surface-emitting light emitting device Surface-emitting light emitting device

H - Electricity

01

S

345/32

H01S 5/183 (2006.01) H01L 33/00 (2006.01)

Patent

CA 1238973

A SURFACE-EMITTING LIGHT EMITTING DEVICE Abstract of the Disclosure A surface-emitting, light emitting device has a columnar active region of one direct bandgap semiconductor and a surrounding confining region of a higher bandgap semiconductor. Contacts are made to the active and confining regions and a window is formed in the device in alignment with the active region to permit light emission from the device. The semiconductors are doped to establish a pn junction within a carrier diffusion length of the heterojunction between the active and confining regions, the pn junction extending the length of the active region. In use, light is emitted along the axis of the columnar active region in response to current passing radially across the pn junction. -i-

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