LED semiconductor body
View Patent ↗An LED semiconductor body includes a semiconductor layer sequence which comprises a quantum structure which is intended to produce radiation and comprises at least one quantum layer and at least one barrier layer, wherein the quantum layer and the barrier layer are strained with mutually opposite mathematical signs.
1. An LED semiconductor body having a semiconductor layer sequence which comprises a quantum structure which is configured to produce incoherent radiation and comprises at least one quantum layer and at least one barrier layer, wherein the quantum layer and the barrier layer are strained with mutually opposite mathematical signs, wherein the LED semiconductor body is arranged on a carrier, and wherein a growth substrate on which the semiconductor layer sequence is deposited epitaxially has been removed.
2. The LED semiconductor body according to claim 1 , wherein the LED semiconductor body is a thin-film semiconductor body.
3. The LED semiconductor body according to claim 1 , wherein the quantum layer is compressive-strained, and the barrier layer is tensile-strained.
4. The LED semiconductor body according to claim 1 , wherein an absolute value of a strain of the barrier layer is less than a strain of the quantum layer.
5. The LED semiconductor body according to claim 4 , wherein the absolute value of the strain of the barrier layer has a value between 0.2 and 0.67 inclusive of the absolute value of the strain of the quantum layer.
6. The LED semiconductor body according to claim 1 , wherein a ratio of a thickness of the barrier layer to a thickness of the quantum layer is greater than or equal to 1.
7. The LED semiconductor body according to claim 1 , wherein a thickness of the barrier layer is at least 5 nm.
8. The LED semiconductor body according to claim 1 , wherein the quantum layer contains In y Ga 1-y As where 0≦y≦0.5.
9. The LED semiconductor body according to claim 1 , wherein the strained barrier layer contains Al x Ga 1-x As 1-z P z at least one of where 0.01≦x≦1 and where 0.01≦z≦0.5.
10. The LED semiconductor body according to claim 1 , wherein the quantum structure comprises a further quantum layer and a further barrier layer, and the further quantum layer and the further barrier layer are strained with likewise mutually opposite mathematical signs.
11. The LED semiconductor body according to claim 10 , wherein at least one of the further quantum layer is compressive-strained and the further barrier layer is tensile-strained.
12. The LED semiconductor body according to claim 10 , wherein the strained quantum layers and the strained barrier layers are arranged in an alternating sequence on one another in the quantum structure.
13. The LED semiconductor body according to claim 1 , wherein a mean strain of the quantum structure is 2000 ppm or less.
14. The LED semiconductor body according to claim 1 , wherein the carrier mechanically stabilizes the semiconductor body.
15. The LED semiconductor body according to claim 14 , wherein the carrier is different from the growth substrate on which the semiconductor body is deposited epitaxially.
16. The LED semiconductor body according to claim 14 , wherein a mirror layer is arranged between the carrier and the semiconductor body.
17. The LED semiconductor body according to claim 16 , wherein the mirror layer is metallic.
18. The LED semiconductor body according to claim 1 , wherein the quantum structure is configured to produce radiation with a peak wavelength in a wavelength range between 750 nm and 1050 nm inclusive.
19. The LED semiconductor body according to claim 1 , wherein the quantum structure is configured such that a width at half maximum of a spectrum of the radiation produced by the quantum structure is 70 nm or less.
20. The LED semiconductor body according to claim 1 , wherein the quantum structure comprises at least 4 quantum layers.
21. An LED semiconductor body having a semiconductor layer sequence which comprises a quantum structure which is configured to produce incoherent radiation and comprises at least one quantum layer and at least one barrier layer, wherein the quantum layer and the barrier layer are strained with mutually opposite mathematical signs, wherein the LED semiconductor body is arranged on a carrier, wherein a growth substrate on which the semiconductor layer sequence is deposited epitaxially has been removed, wherein the strained barrier layer contains Al x Ga 1-x As 1-z P z at least one of where 0.01≦x≦1 and where 0.01≦z≦0.5, and wherein a metallic mirror layer is arranged between the carrier and the semiconductor body.