Organic semiconductor element

Patent metadata

Field	Value
Publication number	US-9312507-B2
Application number	US-201113150564-A
Country	US
Kind code	B2
Filing date	Jun 1, 2011
Priority date	Dec 5, 2001
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

By introducing new concepts into a structure of a conventional organic semiconductor element and without using a conventional ultra thin film, an organic semiconductor element is provided which is more reliable and has higher yield. Further, efficiency is improved particularly in a photoelectronic device using an organic semiconductor. Between an anode and a cathode, there is provided an organic structure including alternately laminated organic thin film layer (functional organic thin film layer) realizing various functions by making an SCLC flow, and a conductive thin film layer (ohmic conductive thin film layer) imbued with a dark conductivity by doping it with an acceptor and a donor, or by the like method.

First claim

What is claimed is:

1. A light-emitting device comprising:
an anode;
a first electroluminescent layer over the anode;
a layer over the first electroluminescent layer, the layer consisting of one of molybdenum oxide, vanadium oxide, and niobium oxide;
a second electroluminescent layer over the layer; and
a cathode over the second electroluminescent layer,
wherein each of the first electroluminescent layer and the second electroluminescent layer comprises a hole transporting layer and an electron transporting layer over the hole transporting layer.

2. The light-emitting device according to claim 1 ,
wherein the layer consists of molybdenum oxide.

3. The light-emitting device according to claim 1 ,
wherein the layer consists of vanadium oxide.

4. The light-emitting device according to claim 1 ,
wherein the light-emitting device is capable of emitting white light.

5. The light-emitting device according to claim 1 ,
wherein the first electroluminescent layer and the second electroluminescent layer emit light with different color so that the light-emitting device is capable of emitting white light.

6. The light-emitting device according to claim 1 ,
wherein at least one of the first electroluminescent layer and the second electroluminescent layer emits light from a triplet excited state.

7. A light-emitting device comprising:
an anode;
a first electroluminescent layer over the anode;
a first layer over the first electroluminescent layer, the first layer comprising an electron transporting material and a donor to the electron transporting material;
a second layer over the first layer, the second layer consisting of one of molybdenum oxide, vanadium oxide, and niobium oxide;
a second electroluminescent layer over the second layer; and
a cathode over the second electroluminescent layer,
wherein each of the first electroluminescent layer and the second electroluminescent layer comprises a hole transporting layer and an electron transporting layer over the hole transporting layer.

8. The light-emitting device according to claim 7 ,
wherein the second layer consists of molybdenum oxide.

9. The light-emitting device according to claim 7 ,
wherein the second layer consists of vanadium oxide.

10. The light-emitting device according to claim 7 ,
wherein the donor is selected from an alkali metal and an alkali earth metal.

11. The light-emitting device according to claim 7 ,
wherein the donor is selected from a Lewis base.

12. The light-emitting device according to claim 7 ,
wherein the light-emitting device is capable of emitting white light.

13. The light-emitting device according to claim 7 ,
wherein the first electroluminescent layer and the second electroluminescent layer emit light with different color so that the light-emitting device is capable of emitting white light.

14. The light-emitting device according to claim 7 ,
wherein at least one of the first electroluminescent layer and the second electroluminescent layer emits light from a triplet excited state.

Assignees

• Tsutsui Tetsuo
• Yamazaki Hiroko
• Seo Satoshi
• Semiconductor Energy Lab

Inventors

• Tsutsui Tetsuo
• Yamazaki Hiroko
• Seo Satoshi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• Y02E10/50

  Photovoltaic [PV] energy · CPC title

• B82Y10/00 Primary

  Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic · CPC title

• H01L51/005

  Electricity · mapped topic

• H01L51/007

  Electricity · mapped topic