# US 2018/0026084 A1 · Organic light-emitting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026084 A1 - Document ID: US20180026084A1 - Status: Published application - Kind: A1 - Application number: 15/641,563 - Filed: 2017-07-05 - Published: 2018-01-25 - Earliest claimed: 2016-07-19 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Namsu KANG - Web page: https://patentgrep.com/patent/US20180026084A1 ## CPC - H10K 50/131: {with spacer layers between the electroluminescent layers} - H10K 50/171: {Electron injection layers} - H10K 50/19: Tandem OLEDs - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 85/60: Organic compounds having low molecular weight (H10K85/10 - H10K85/50 take precedence) - H10K 50/15: Hole transporting layers - H10K 50/16: Electron transporting layers - H10K 50/17: Carrier injection layers - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An organic light-emitting device according to an embodiment of the present disclosure includes a first electrode, a second electrode opposite to the first electrode, a first light-emitter on the first electrode to emit first light of a first wavelength range, a second light-emitter between the first light-emitter and the second electrode, to emit second light of a second wavelength range, and a charge generation layer which includes a metal compound having a perovskite structure, is between the first light-emitter and the second light-emitter, and is to generate charges to provide to each of the first light-emitter and the second light-emitter. ## Claims ### Claim 1 An organic light-emitting device, comprising: a first electrode; a second electrode opposite to the first electrode; a first light-emitter on the first electrode to emit first light of a first wavelength range; a second light-emitter between the first light-emitter and the second electrode, the second light-emitter to emit second light of a second wavelength range; and a charge generation layer, which includes a metal compound having a perovskite structure, disposed between the first light-emitter and the second light-emitter, the charge generating layer to generate charges to be provided to each of the first light-emitter and the second light-emitter. ### Claim 2 (depends on 1) The organic light-emitting device as claimed in claim 1, wherein: the charges includes electrons and holes, the charge generation layer includes a first charge generation layer to provide the electrons to the first light-emitter and a second charge generation layer to provide the holes to the second light-emitter, and the metal compound is included in the first charge generation layer. ### Claim 3 (depends on 2) The organic light-emitting device as claimed in claim 2, wherein the first charge generation layer further includes at least one of a metal chelate compound, an oxadiazole dendrimer-based compound, an oxadiazole-based compound, an azole-based compound, a benzimidazole-based compound, a pyridine-based compound, a quinoline-based compound, an anthrazoline-based compound, a silole-based compound, or a cyan-based compound. ### Claim 4 (depends on 2) The organic light-emitting device as claimed in claim 2, wherein the first charge generation layer further includes at least one of magnesium (Mg), aluminum (Al), lithium (Li), calcium (Ca), silver (Ag), gold (Au), CaO, MoOx, TiOx, or ZnOx, wherein x is a natural number selected from 2 and 3. ### Claim 5 (depends on 1) The organic light-emitting device as claimed in claim 1, wherein: the first light-emitter includes a first emission layer to emit the first light, a first hole transport region between the first electrode and the first emission layer, and a first electron transport region between the first emission layer and the charge generation layer, and the second light-emitter includes a second emission layer to emit the second light, a second hole transport region between the charge generation layer and the second emission layer, and a second electron transport region between the second electrode and the second emission layer. ### Claim 6 (depends on 5) The organic light-emitting device as claimed in claim 5, wherein: the first electron transport region includes a first electron injection layer adjacent to the charge generation layer, and a first electron transport layer between the first electron injection layer and the first emission layer, and the second electron transport region includes a second electron injection layer adjacent to the second electrode, and a second electron transport layer between the second electron injection layer and the second emission layer. ### Claim 7 (depends on 6) The organic light-emitting device as claimed in claim 6, wherein the second electron injection layer includes the metal compound. ### Claim 8 (depends on 1) The organic light-emitting device as claimed in claim 1, wherein the metal compound includes at least one of CH3NH3PbBr3, CH3NH3PbI3, CH3NH3RbYbI3, CH3NH3CSRbI3, or CH3NH3CSYbI3. ### Claim 9 (depends on 1) The organic light-emitting device as claimed in claim 1, wherein one layer in at least of the first light emitter and the second light-emitter includes the metal compound. ### Claim 10 An organic light-emitting device, comprising: a first electrode; a second electrode opposite to the first electrode; a first light-emitter on the first electrode, the first light-emitter to emit first light of a first wavelength range; a second light-emitter on the first light-emitter, the second light-emitter to emit second light of a second wavelength range; a third light-emitter between the second light-emitter and the second electrode, the third light-emitter to emit light of a third wavelength range; a first intermediate layer between the first light-emitter and the second light-emitter; and a second intermediate layer between the second light-emitter and the third light-emitter, wherein at least one of the first intermediate layer or the second intermediate layer includes a metal compound having a perovskite structure. ### Claim 11 (depends on 10) The organic light-emitting device as claimed in claim 10, wherein: the first intermediate layer includes a first charge generation layer to generate electrons to be provided to the first light-emitter, and a second charge generation layer to generate holes to be provided to the second light-emitter, the second intermediate layer include a third charge generation layer to generates electron to be provided to the second light-emitter, and a fourth charge generation layer to generate holes to be provided to the third light-emitter, and the metal compound is included in at least one of the first charge generation layer or the third charge generation layer. ### Claim 12 (depends on 10) The organic light-emitting device as claimed in claim 10, wherein the metal compound includes at least one of CH3NH3PbBr3, CH3NH3PbI3, CH3NH3RbYbI3, CH3NH3CSRbI3, or CH3NH3CSYbI3. ### Claim 13 (depends on 10) The organic light-emitting device as claimed in claim 10, wherein both the first intermediate layer and the second intermediate layer include the metal compound. ### Claim 14 (depends on 10) The organic light-emitting device as claimed in claim 10, wherein one layer in at least of the first to third light-emitters includes the metal compound.