Light-emitting element
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShogo Uesaka, Toshiki Sasaki, Nobuharu Ohsawa
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Abstract
An electrode layer having high reflectance and a light-emitting element having high emission efficiency are provided. The light-emitting element includes a first electrode layer, a second electrode layer, and an EL layer between the first electrode layer and the second electrode layer. The first electrode layer includes a conductive layer and an oxide layer in contact with the conductive layer. The conductive layer has a function of reflecting light. The oxide layer includes In and M (M represents Al, Si, Ti, Ga, Y, Zr, Sn, La, Ce, Nd, or Hf). A content of the M in the oxide layer is higher than or equal to a content of the In.
Claims20
A light-emitting element comprising:
- a first electrode layer;
- a second electrode layer;
- and
- an EL layer between the first electrode layer and the second electrode layer,
- wherein the first electrode layer comprising:
- a conductive layer;
- and
- an oxide layer in contact with the conductive layer,
- wherein the conductive layer has a function of reflecting light,
- wherein the oxide layer includes In and M (M represents Al, Si, Ti, Ga, Y, Zr, Sn, La, Ce, Nd, or Hf), and
- wherein a content of the M in the oxide layer is higher than or equal to a content of the In.
A light-emitting element comprising:
- a first electrode layer;
- an EL layer over the first electrode layer;
- and
- a second electrode layer over the EL layer,
- wherein the first electrode layer comprising:
- a conductive layer;
- and
- an oxide layer on and in contact with the conductive layer,
- wherein the conductive layer has a function of reflecting light,
- wherein the oxide layer includes In and M (M represents Al, Si, Ti, Ga, Y, Zr, Sn, La, Ce, Nd, or Hf), and
- wherein a content of the M in the oxide layer is higher than or equal to a content of the In.
A light-emitting element comprising:
- a first electrode layer;
- an EL layer on and in contact with the first electrode layer;
- and
- a second electrode layer on and in contact with the EL layer,
- wherein the first electrode layer comprising:
- a conductive layer;
- and
- an oxide layer on and in contact with the conductive layer,
- wherein the conductive layer has a function of reflecting light,
- wherein the oxide layer includes In and M (M represents Al, Si, Ti, Ga, Y, Zr, Sn, La, Ce, Nd, or Hf), and
- wherein a content of the M in the oxide layer is higher than or equal to a content of the In.
Dependencies are inferred from the claim text.