# US 2014/0193936 A1 · Method for fabricating organic light emitting device

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- Number: US 2014/0193936 A1
- Document ID: US20140193936A1
- Status: Published application
- Kind: A1
- Application number: 13/955,569
- Filed: 2013-07-31
- Published: 2014-07-10
- Earliest claimed: 2013-01-04
- Assignees: Samsung Display Co., Ltd.
- Inventors: Hyun Ju CHOI; CHANG HO LEE; ILSOO OH; HeeJoo KO; DAE YUP SHIN; KeonHa CHOI; CHANGMIN LEE; INJAE LEE; Pyungeun JEON; SEJIN CHO; JinYoung YUN; Bora LEE; BEOMJOON KIM; Yeon woo LEE; Ji Hye SHIM; Joongwon SIM
- Web page: https://patentgrep.com/patent/US20140193936A1

## CPC

- H10K 50/15: Hole transporting layers
- H10K 71/191: {characterised by provisions for the orientation or alignment of the layer to be deposited}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A method of fabricating an organic light emitting device includes forming a first electrode layer on a substrate, surface-treating the first electrode layer with CF4 plasma, forming a first common layer containing pentacene on the surface-treated first electrode layer, forming an organic light emitting layer on the first common layer, forming a second common layer on the organic light emitting layer, and forming a second electrode layer on the second common layer. The CF4 plasma treatment enhances the luminous efficiency of the organic light emitting device.

## Claims

### Claim 1

A method of fabricating an organic light emitting device, the method comprising:
forming a first electrode layer on a substrate;
surface-treating the first electrode layer with CF4 plasma;
forming a first common layer containing pentacene on the surface-treated first electrode layer;
forming an organic light emitting layer on the first common layer;
forming a second common layer on the organic light emitting layer; and
forming a second electrode layer on the second common layer.

### Claim 2 (depends on 1)

The method of claim 1, wherein the forming of the first common layer comprises stacking a hole injection layer on the surface-treated first electrode layer.

### Claim 3 (depends on 2)

The method of claim 2, wherein the forming of the first common layer further comprises stacking a hole transport layer on the hole injection layer.

### Claim 4 (depends on 2)

The method of claim 2, wherein the forming of the second common layer further comprises stacking an electron injection layer on the organic light emitting layer.

### Claim 5 (depends on 2)

The method of claim 2, wherein the forming of the second common layer further comprises:
stacking an electron transport layer on the organic light emitting layer; and
stacking an electron injection layer on the electron transport layer.

### Claim 6 (depends on 5)

The method of claim 5, further comprising forming a hole blocking layer blocking movement of holes from the organic light emitting layer to the electron transport layer between the electron transport layer and the organic light emitting layer.

### Claim 7 (depends on 2)

The method of claim 2, further comprising forming a hole blocking layer blocking movement of holes from the organic light emitting layer to the second common layer between the forming of the organic light emitting layer and the forming of the second common layer.

### Claim 8 (depends on 1)

The method of claim 1, wherein the second common layer contains 4,7-diphenyl-1,10-phenanthroline.

### Claim 9 (depends on 1)

The method of claim 1, wherein the first electrode layer contains indium tin oxide.

### Claim 10

A method of fabricating an organic light emitting device, the method comprising:
forming a first electrode layer containing indium tin oxide on a substrate;
surface-treating the first electrode layer with CF4 plasma;
forming a first common layer containing pentacene on the surface-treated first electrode layer;
forming an organic light emitting layer on the first common layer;
forming a hole blocking layer on the organic light emitting layer;
forming a second common layer on the hole blocking layer; and
forming a second electrode layer on the second common layer.

### Claim 11 (depends on 10)

The method of claim 10, wherein the second common layer comprises an electron transport layer and an electron injection layer sequentially stacked.

### Claim 12 (depends on 11)

The method of claim 11, wherein the electron transport layer contains 4,7-diphenyl-1,10-phenanthroline.