Diode-based devices and methods for making the same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-033/00
출원번호
US-0684797
(2010-01-08)
등록번호
US-8237151
(2012-08-07)
발명자
/ 주소
Lochtefeld, Anthony J.
출원인 / 주소
Taiwan Semiconductor Manufacturing Company, Ltd.
대리인 / 주소
Slater & Matsil, L.L.P.
인용정보
피인용 횟수 :
10인용 특허 :
256
초록▼
In accordance with an embodiment, a diode comprises a substrate, a dielectric material including an opening that exposes a portion of the substrate, the opening having an aspect ratio of at least 1, a bottom diode material including a lower region disposed at least partly in the opening and an upper
In accordance with an embodiment, a diode comprises a substrate, a dielectric material including an opening that exposes a portion of the substrate, the opening having an aspect ratio of at least 1, a bottom diode material including a lower region disposed at least partly in the opening and an upper region extending above the opening, the bottom diode material comprising a semiconductor material that is lattice mismatched to the substrate, a top diode material proximate the upper region of the bottom diode material, and an active diode region between the top and bottom diode materials, the active diode region including a surface extending away from the top surface of the substrate.
대표청구항▼
1. A diode comprising: a substrate;a dielectric material including an opening that exposes a portion of the substrate, the opening having an aspect ratio of at least 1;a bottom diode material including a lower region disposed at least partly in the opening and an upper region extending above the ope
1. A diode comprising: a substrate;a dielectric material including an opening that exposes a portion of the substrate, the opening having an aspect ratio of at least 1;a bottom diode material including a lower region disposed at least partly in the opening and an upper region extending above the opening, the bottom diode material comprising a semiconductor material that is lattice mismatched to the substrate;a top diode material proximate and disposed laterally from a sidewall of the upper region of the bottom diode material; andan active diode region between a sidewall of the top diode material and the sidewall of the upper region of the bottom diode material, the active diode region including a surface extending away from a top surface of the substrate. 2. The diode of claim 1 wherein the active diode region comprises a p-n junction formed by a junction of the top and bottom diode materials. 3. The diode of claim 1 wherein the active diode region comprises a material different from the top and bottom diode materials, and the active diode region forms an intrinsic region of a p-i-n junction formed between the top and bottom diode materials. 4. The diode of claim 1 wherein the active diode region comprises multiple quantum wells formed between the top and bottom diode materials. 5. The diode of claim 1 wherein the substrate is selected from the group consisting of silicon, sapphire, and silicon carbide. 6. The diode of claim 1 wherein the substrate is a single crystal silicon wafer. 7. The diode of claim 1 wherein the opening is a trench, and wherein the upper region of the bottom diode material forms a fin above the trench. 8. The diode of claim 1 wherein the opening is a hole having the aspect ratio in two perpendicular axes, and wherein the upper region of the bottom diode material forms a pillar above the opening. 9. The diode of claim 1 wherein the semiconductor material comprises a material selected from the group consisting essentially of a Group III-V compound, a Group II-VI compound, and a Group IV alloy. 10. The diode of claim 1 wherein the bottom diode material includes an n-type dopant and the top diode material includes a p-type dopant. 11. A diode comprising: a substrate;a bottom diode material that is lattice mismatched to the substrate, the bottom diode material extending above a top surface of the substrate and including a bottom diode section having a width across the top surface and a height above the top surface, the height being greater than the width;a top diode material proximate the bottom diode material; andan active light emitting diode region between the top and bottom diode materials, the active light emitting diode region including a surface at an interface between the active light emitting diode region and the bottom diode material, the surface extending away from the top surface. 12. The diode of claim 11 wherein the active light emitting diode region comprises a p-n junction formed by a junction of the top and bottom diode materials. 13. The diode of claim 11 wherein the active light emitting diode region comprises a material different from the top and bottom diode materials, and the active light emitting diode region forms an intrinsic region of a p-i-n junction formed between the top and bottom diode materials. 14. The diode of claim 11 wherein the active light emitting diode region comprises multiple quantum wells formed between the top and bottom diode materials. 15. The diode of claim 11 wherein the bottom diode material includes an n-type dopant and the top diode material includes a p-type dopant. 16. A structure comprising: a substrate;a dielectric material including an opening to a surface of the substrate;a bottom diode material including a lower region and an upper region, the lower region being disposed at least partly in the opening, and the upper region having a sidewall extending above the opening, the bottom diode material comprising a semiconductor material that is lattice mismatched to the substrate;an active diode region along the sidewall of the upper region of the bottom diode material, the active diode region having a sidewall laterally distal from the sidewall of the upper region of the bottom diode material; anda top diode material along the sidewall of the active diode region. 17. The structure of claim 16, the opening having an aspect ratio of at least 1. 18. The structure of claim 16, wherein the opening is a trench, and wherein the upper region of the bottom diode material forms a fin above the trench. 19. The structure of claim 16, wherein the opening is a hole having a circular cross sectional area in a plane parallel to the surface of the substrate, and wherein the upper region of the bottom diode material forms a pillar above the opening.
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