Patent ID: 9748437
Date: 2017-08-29
CPC Classifications: H01L

Claim:
1. A method of making a light emitting device, comprising: providing a growth substrate comprising a growth mask having a plurality of first apertures in a first area and a plurality of apertures in a second area; selectively growing a plurality of first nanostructures through the first apertures and a plurality of second nanostructures through the second apertures in a same nanostructure growth step, wherein the first and the second nanostructures comprise an inner portion or an entirety of respective first and second growth templates; growing first and second active regions on respective first and second growth templates in the same active region growth step; and growing first and second junction forming elements on respective first and second active regions in a same junction forming element growth step to form respective first and second light emitting devices; wherein each first growth template differs from each second growth template such that each second light emitting device has a second peak emission wavelength different from a first peak emission wavelength of each first light emitting device; each first active region comprises at least one first quantum well having a first band gap; each second active region comprises at least one second quantum well having a second band gap different from the first band gap; each first growth template comprises a first nanowire core and at least one first template layer around the first nanowire core, such that the first template layer extends laterally beyond the first aperture over the growth mask; each second growth template comprises a second nanowire core and at least one second template layer around the second nanowire core, such that the second template layer extends laterally beyond the second aperture over the growth mask; each first growth template has a nanopyramid shape; each second growth template has a nanopillar or nanowire shape; each first growth template has a larger p-plane facet area contacting the first active region than a p-plane facet area of the second growth template contacting the second active region; and each first quantum well contains a higher amount of indium and a longer peak emission wavelength than each second quantum well due to the difference in the p-plane facet area between the first and the second growth templates.