Semiconductor on insulator structure comprising a buried high resistivity layer

Patent metadata

Field	Value
Publication number	US-10622247-B2
Application number	US-201716077176-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Feb 19, 2016
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A cost effective process flow for manufacturing semiconductor on insulator structures is parallel is provided. Each of the multiple semiconductor-on-insulator composite structures prepared in parallel includes a charge trapping layer (CTL).

First claim

What is claimed is:

1. A multilayer structure comprising:
a single crystal semiconductor handle substrate comprising two major, generally parallel surfaces, one of which is a front surface of the single crystal semiconductor handle substrate and the other of which is a back surface of the single crystal semiconductor handle substrate, a circumferential edge joining the front and back surfaces of the single crystal semiconductor handle substrate, a central plane between the front surface and the back surface of the single crystal semiconductor handle substrate, and a bulk region between the front and back surfaces of the single crystal semiconductor handle substrate;
a handle dielectric layer in interfacial contact with the front surface of the single crystal semiconductor handle substrate;
a high resistivity single crystal semiconductor layer in interfacial contact with the handle dielectric layer, wherein the high resistivity single crystal semiconductor layer has a minimum bulk resistivity of at least about 500 ohm-cm and further comprises a roughened front surface having a surface roughness of at least about 0.1 micrometers as measured according to the root mean square method over a surface area of at least 30 micrometers by 30 micrometers;
a charge trapping layer in interfacial contact with the roughened front surface of the high resistivity single crystal semiconductor layer, the charge trapping layer comprising polycrystalline silicon, the polycrystalline silicon comprising grains having a plurality of random crystal orientations and having a grain size between about 10 nanometers and about 3 micrometers;
a device dielectric layer in interfacial contact with the charge trapping layer, and
a single crystal semiconductor device layer in interfacial contact with the device dielectric layer, wherein the single crystal semiconductor device layer comprises electronic circuits.

2. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer comprises silicon.

3. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer comprises a silicon wafer sliced from a single crystal silicon ingot grown by the Czochralski method or the float zone method.

4. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 1000 Ohm-cm and about 100,000 Ohm-cm.

5. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 1000 ohm cm and about 10,000 Ohm-cm.

6. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 2000 Ohm cm and about 10,000 Ohm-cm.

7. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 3000 Ohm-cm and about 10,000 Ohm-cm.

8. The multilayer structure of claim 1 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 3000 Ohm cm and about 5,000 Ohm-cm.

9. The multilayer structure of claim 1 wherein the surface roughness of the roughened front surface of the high resistivity single crystal semiconductor layer substrate is between about 0.1 micrometer and about 1 micrometer as measured according to the root mean square method over a surface area of at least 30 micrometers by 30 micrometers.

10. The multilayer structure of claim 1 wherein the polycrystalline silicon comprising grains having a plurality of crystal orientations comprise at least two orientations selected from the group consisting of (111), (100), and (110).

11. The multilayer structure of claim 1 wherein each of the handle dielectric layer and the device dielectric layer independently comprises a material selected from the group consisting of silicon dioxide, silicon nitride, hafnium oxide, titanium oxide, zirconium oxide, lanthanum oxide, barium oxide, and a combination thereof.

12. The multilayer structure of claim 1 wherein both of the handle dielectric layer and the device dielectric layer comprise a buried oxide layer having a thickness of at least about 10 nanometer.

13. The multilayer structure of claim 1 wherein the charge trapping layer has a resistivity between about 1000 Ohm-cm and about 100,000 Ohm-cm.

14. The multilayer structure of claim 1 wherein the charge trapping layer further comprises carbon at a concentration between about 1% on an atomic basis and about 10% on an atomic basis.

15. A multilayer structure comprising:
a high resistivity single crystal semiconductor layer, wherein the high resistivity single crystal semiconductor layer has a minimum bulk resistivity of at least about 500 ohm-cm and further comprises a roughened front surface having a surface roughness of at least about 0.1 micrometers as measured according to the root mean square method over a surface area of at least 30 micrometers by 30 micrometers;
a charge trapping layer in interfacial contact with the roughened front surface of the high resistivity single crystal semiconductor layer, the charge trapping layer comprising polycrystalline silicon, the polycrystalline silicon comprising grains having a plurality of random crystal orientations and having a grain size between about 10 nanometers and about 3 micrometers;
a device dielectric layer in interfacial contact with the charge trapping layer, and
a single crystal semiconductor device layer in interfacial contact with the device dielectric layer, wherein the single crystal semiconductor device layer comprises electronic circuits.

16. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer comprises silicon.

17. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer comprises a silicon wafer sliced from a single crystal silicon ingot grown by the Czochralski method or the float zone method.

18. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 1000 Ohm-cm and about 100,000 Ohm-cm.

19. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 1000 ohm cm and about 10,000 Ohm-cm.

20. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 2000 Ohm cm and about 10,000 Ohm-cm.

21. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 3000 Ohm-cm and about 10,000 Ohm-cm.

22. The multilayer structure of claim 15 wherein the high resistivity single crystal semiconductor layer has a bulk resistivity between about 3000 Ohm cm and about 5,000 Ohm-cm.

23. The multilayer structure of claim 15 wherein the surface roughness of the roughened front surface of the high resistivity single crystal semiconductor layer substrate is between about 0.1 micrometer and about 1 micrometer as measured according to the root mean square method over a surface area of at least 30 micrometers by 30 micrometers.

24. The multilayer structure of claim 15 wherein the polycrystalline silicon comprising grains having a plurality of crystal orientations comprise at least two orientations selected from th

Assignees

• Sunedison Semiconductor Ltd
• Globalwafers Co Ltd

Inventors

• Peidous Igor
• Jones Andrew M
• Kommu Srikanth
• Mendez Horacio Josue

Classifications

• H01L21/76243

  Electricity · mapped topic

• H01L29/7824

  Electricity · mapped topic

• H01L29/7812

  Electricity · mapped topic

• H01L21/2007

  Electricity · mapped topic

• H01L29/045

  Electricity · mapped topic