Conductive material

Patent metadata

Field	Value
Publication number	US-9159463-B2
Application number	US-201213625194-A
Country	US
Kind code	B2
Filing date	Sep 24, 2012
Priority date	Sep 30, 2011
Publication date	Oct 13, 2015
Grant date	Oct 13, 2015

Abstract

According to one embodiment, a conductive material includes a carbon substance and a metallic substance mixed with and/or laminated to the carbon substance. The carbon substance has at least one dimension of 200 nm or less. The carbon substance includes a graphene selected from single-layered graphene and multi-layered graphene, a part of carbon atoms constituting the graphene is substituted with a nitrogen atom. The metallic substance includes at least one of a metallic particle and a metallic wire.

First claim

What is claimed is:

1. A conductive material comprising:
a carbon substance having at least one dimension of 200 nm or less, the carbon substance comprising a graphene selected from a single-layered graphene and a multi-layered graphene, a part of carbon atoms constituting the graphene being substituted with a nitrogen atom; and
a metallic substance mixed with and/or laminated to the carbon substance, the metallic substance comprising at least one of a metallic particle and a metallic wire.

2. The conductive material according to claim 1 , the transmittance of the conductive materials at 550 nm wavelength is 60% or more.

3. The conductive material according to claim 1 , wherein the metallic substance comprises the metal particle having at least one dimension of 200 nm or less.

4. The conductive material according to claim 1 , wherein the metallic substance comprises the metal wire having at least one dimension of 200 nm or less.

5. The conductive material according to claim 1 , wherein the carbon substance has an atomic ratio of nitrogen to carbon (N/C) of from 1/5 to 1/1000.

6. The conductive material according to claim 1 , wherein I 401.2 representing an intensity at 401.2 eV is higher than I 398.5 representing an intensity at 398.5 eV in X-ray photoelectron spectrum with a 1 s electron of the nitrogen atom.

7. The conductive material according to claim 1 , further comprising an electron injection material mixed and/or laminated with the conductive material.

8. The conductive material according to claim 7 , wherein the electron injection material has electron injection performance and is selected from the group consisting of alkali metal salt, alkaline earth metal salt, an n-type oxide semiconductor, an oligomer having a π electron system substituted with an electron withdrawing group, and a polymer having a π electron system substituted with an electron withdrawing group.

9. The conductive material according to claim 1 , wherein a ratio of I O1s /I C1s is 1/10 or less, where I O1s is a peak intensity at 530 eV of oxygen atoms and I C1s is a peak intensity of C1s at 285 eV of carbon atoms in X-ray photoelectron spectrum.

10. The conductive material according to claim 1 , wherein the carbon substance has a thickness of 100 nm or less.

11. The conductive material according to claim 1 , wherein the metallic substance is selected from Ag, Al, Cu, Au, W, Mo, and an alloy thereof.

12. A conductive material which is transparent comprising:
a carbon substance having a graphene selected from a single-layered graphene and a multi-layered graphene, and a part of carbon atoms constituting the graphene being substituted with a nitrogen atom; and
a metallic substance laminated to the carbon substance, the metallic substance comprising a metallic wire of which diameter is 200 nm or less.

13. An electric device comprising:
a pair of electrodes; and
a functional layer sandwiched between the electrodes,
one of the pair of electrodes being a transparent electrode made from a conductive material comprising a carbon substance and a metallic substance mixed with and/or laminated to the carbon substance, the carbon substance having at least one dimension of 200 nm or less and comprising a graphene selected from single-layered and multi-layered graphenes, a part of carbon atoms in the graphene being substituted with a nitrogen atom, the metallic substance comprising at least one of a metallic particle and a metallic wire.

14. An electric device cording to claim 13 , wherein the metallic substance comprises the metal particle having at least one dimension of 200 nm or less.

15. An electric device cording to claim 13 , wherein the metallic substance comprises the metal wire having at least one dimension of 200 nm or less.

16. The electric device according to claim 13 , wherein the functional layer generates photovoltaic power and the transparent electrode is positioned at a light incidence side receiving light.

17. The electric device according to claim 13 , wherein the functional layer is divided into pixels configured to display an image and the transparent electrode is opposed to a display side displaying image.

18. The electric device according to claim 13 , wherein the functional layer emits light and the transparent electrode is positioned at a side for taking out light.

19. The electric device according to claim 13 , wherein the pair of electrodes are transparent.

20. The electric device according to claim 13 , further comprising an electron injection layer.

Assignees

• Naito Katsuyuki
• Yoshinaga Norihiro
• Nakano Yoshihiko
• Akasaka Yoshihiro
• Matake Shigeru
• Toshiba Kk

Inventors

• Naito Katsuyuki
• Yoshinaga Norihiro
• Nakano Yoshihiko
• Akasaka Yoshihiro
• Matake Shigeru

Classifications

• H10D64/205

  Nanosized electrodes, e.g. nanowire electrodes · CPC title

• H10D62/882

  Graphene · CPC title

• H10F77/244

  made of transparent conductive layers, e.g. transparent conductive oxide [TCO] layers · CPC title

• H10F77/211

  for photovoltaic cells · CPC title

• H01L31/022425

  Electricity · mapped topic