Capacitor with insulating nanostructure

• US 7,271,434 B2
• Filed: 12/17/2003
• Issued: 09/18/2007
• Est. Priority Date: 09/20/2002
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Kim, Sarah E., Kellar, Scot A.
• Primary Examiner(s): Wilczewski; Mary
• Assistant Examiner(s): Perkins; Pamela E
• Application Number:
  US10/739,688
• Publication Number:
  US 20040131774A1
• Time in Patent Office: 1,371 Days
• Field of Search: 438/396, 438/399, 977/1, 977/712, 977/720, 977/721, 977/723, 257/296, 257/306, 257/309, 257/313
• US Class Current: 257/309
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: G11C 13/0033 Disturbance prevention or evaluation; Refreshing of disturbed memory data
• CPC Class Codes: G11C 13/025 using fullerenes, e.g. C60, or nanotubes, e.g. carbon or silicon nanotubes
• CPC Class Codes: G11C 2213/16 Memory cell being a nanotube, e.g. suspended nanotube
• CPC Class Codes: G11C 2213/81 Array wherein the array conductors, e.g. word lines, bit lines, are made of nanowires
• CPC Class Codes: H01G 4/008 Selection of materials
• CPC Class Codes: H01G 4/33 Thin- or thick-film capacitors thin- or thick-film circuits H01L27/00; capacitors without a potential-jump or surface barrier specially adapted for integrated circuits, details thereof, multistep manufacturing processes therefor H01L28/40
• CPC Class Codes: H01L 27/0805 Capacitors only
• CPC Class Codes: H01L 28/84 being a rough surface, e.g. using hemispherical grains
• CPC Class Codes: H10B 12/03 Making the capacitor or connections thereto
• CPC Class Codes: Y10S 977/70 Nanostructure
• CPC Class Codes: Y10S 977/72 On an electrically conducting, semi-conducting, or semi-insulating substrate
• CPC Class Codes: Y10S 977/721 On a silicon substrate
• CPC Class Codes: Y10S 977/723 On an electrically insulating substrate
• CPC Class Codes: Y10S 977/902 Specified use of nanostructure
• CPC Class Codes: Y10S 977/963 Miscellaneous
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Abstract

The present invention discloses a method including providing a substrate; forming a lower conductor over the substrate; forming a conducting nanostructure over the lower conductor; forming a thin dielectric over the conducting nanostructure; and forming an upper conductor over the thin dielectric. The present invention further discloses a device including a substrate; a lower conductor located over the substrate; a conducting nanostructure located over the lower conductor; a thin dielectric located over the conducting nanostructure; and an upper conductor located over the thin dielectric.

Claims

1. A device comprising:

a lower conductor;

an insulating nanostructure disposed over said lower conductor, said insulating nanostructure being part of a discontinuous layer, said insulating nanostructure being loosely arranged as discrete insulating nanostructure;

a thin conductor disposed over said insulating nanostructure wherein portions of said thin conductor are disposed in contact with said lower conductor;

a thin dielectric disposed over said thin conductor; and

an upper conductor disposed over said thin dielectric.

2. The device of claim 1 wherein said thin dielectric comprises an insulating nanostructure.

3. The device of claim 1 wherein said thin dielectric comprises a high k value material.

4. The device of claim 1 wherein said upper conductor comprises a material that forms a conductive oxide.