Patent ID: 7045812
Filing Date: 2006-05-16
Classification: B82Y,H01L,H01S

Abstract:
1. A method for producing an opto-electrical device having a spectral bandwidth, the method comprising: stacking a plurality of quantum wells, each having a two-dimensional density of states, on an epitaxial layer, forming at least two of the quantum wells with different widths and barrier heights; arranging a plurality of separate confinement heterostructures amongst the quantum wells, each of the separate confinement heterostructures having a thickness of at least 120 nm; injecting electrons into a first end of a region containing the quantum wells and separate confinement heterostructures; injecting holes into a second, opposite end of the region; and distributing the electrons and holes uniformly within the quantum wells by enabling the electrons to enter the quantum wells before the holes, including selecting a barrier height of the separate confinement heterostructures based on the two-dimensional density of states within the quantum wells, comprising selecting a lesser height to obtain greater uniformity in the electron and hole distribution.