Light emitting element and light emitting device
First Claim
Patent Images
1. A light emitting element comprising:
- n pieces of light emitting layers between a first electrode and a second electrode, wherein n is a natural number larger than 1; and
a stacked layer provided between the mth light emitting layer and the m+1th light emitting layer, wherein m is a natural number equal to or larger than 1 and smaller than n,wherein the stacked layer comprises a first layer and a second layer which are in contact with each other,wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, andwherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance.
0 Assignments
0 Petitions
Accused Products
Abstract
A light emitting element of the invention includes n pieces of light emitting layers (n is a natural number) between first and second electrodes. A first layer and a second layer are provided between the mth light emitting layer (m is a natural number of 1≦m≦n) and the m+1th light emitting layer. The first and second layers are contacted to each other. The first layer contain a substance that transports holes easily and a substance with an electron accepting property. The second layer contains a substance that transports electrons easily and a substance with an electron donating property. Molybdenum oxide is used as the substance with the electron accepting property.
-
Citations
34 Claims
-
1. A light emitting element comprising:
-
n pieces of light emitting layers between a first electrode and a second electrode, wherein n is a natural number larger than 1; and a stacked layer provided between the mth light emitting layer and the m+1th light emitting layer, wherein m is a natural number equal to or larger than 1 and smaller than n, wherein the stacked layer comprises a first layer and a second layer which are in contact with each other, wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, and wherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A light emitting element comprising:
-
a first light emitting layer and a second light emitting layer which are provided between a first electrode and a second electrode; and a stacked layer provided between the first light emitting layer and the second light emitting layer, wherein the stacked layer comprises a first layer and a second layer which are in contact with each other, wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, and wherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
12. A light emitting element comprising:
-
a first light emitting layer formed over a first electrode; a first stacked layer formed over the first light emitting layer; a second light emitting layer formed over the first stacked layer; a second stacked layer formed over the second light emitting layer; a third light emitting layer formed over the second stacked layer; a second electrode formed over the third light emitting layer, wherein the first stacked layer and the second stacked layer each comprise a first layer and a second layer which are in contact with each other, wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, and wherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. A lighting appliance having a light emitting element, the light emitting element comprising:
-
n pieces of light emitting layers between a first electrode and a second electrode, wherein n is a natural number larger than 1; and a stacked layer provided between the mth light emitting layer and the m+1th light emitting layer, wherein m is a natural number equal to or larger than 1 and smaller than n, wherein the stacked layer comprises a first layer and a second layer which are in contact with each other, wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, and wherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance. - View Dependent Claims (19, 20, 21, 22)
-
-
23. A lighting appliance having a light emitting element, the light emitting element comprising:
-
a first light emitting layer and a second light emitting layer which are provided between a first electrode and a second electrode; and a stacked layer provided between the first light emitting layer and the second light emitting layer, wherein the stacked layer comprises a first layer and a second layer which are in contact with each other, wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, and wherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance. - View Dependent Claims (24, 25, 26, 27, 28)
-
-
29. A lighting appliance having a light emitting element, the light emitting element comprising:
-
a first light emitting layer formed over a first electrode; a first stacked layer formed over the first light emitting layer; a second light emitting layer formed over the first stacked layer; a second stacked layer formed over the second light emitting layer; a third light emitting layer formed over the second stacked layer; a second electrode formed over the third light emitting layer, wherein the first stacked layer and the second stacked layer each comprise a first layer and a second layer which are in contact with each other, wherein the first layer contains both molybdenum oxide and a substance that transports a hole easily, and wherein the second layer contains both a first substance that transports an electron easily and a second substance that has an electron donating property with respect to the first substance. - View Dependent Claims (30, 31, 32, 33, 34)
-
Specification