# US 2021/0242409 A1 · Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242409 A1 - Document ID: US20210242409A1 - Status: Published application - Kind: A1 - Application number: 17/160,658 - Filed: 2021-01-28 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Semiconductor Energy Laboratory Co., Ltd. - Inventors: Satoshi Seo; Tsunenori SUZUKI; Naoaki HASHIMOTO - Web page: https://patentgrep.com/patent/US20210242409A1 ## CPC - H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole} - H10K 85/615: {Polycyclic condensed aromatic hydrocarbons, e.g. anthracene} - H10K 85/626: {containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene} - H10K 85/654: {comprising only nitrogen as heteroatom (H10K85/652 takes precedence)} - H10K 50/11: characterised by the electroluminescent [EL] layers - H10K 85/311: {Phthalocyanine} - H10K 85/636: {comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom} - H10K 2101/20: Delayed fluorescence emission - H10K 2101/90: {Multiple hosts in the emissive layer} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first layer. The first layer contains a light-emitting material, a first material, and a second material. The first material has a first anthracene skeleton and a first substituent. The first substituent is bonded to the first anthracene skeleton and includes a heteroaromatic ring. The second material has a second anthracene skeleton, a second substituent, and a third substituent. The second substituent is bonded to the second anthracene skeleton and includes an aromatic ring whose ring structure is composed of carbon. The third substituent is bonded to the second anthracene skeleton and includes an aromatic ring whose ring structure is composed of carbon. The third substituent has a different structure from the second substituent. ## Claims ### Claim 1 A light-emitting device comprising: a first electrode; a second electrode; and a first layer, wherein the first layer comprises a region sandwiched between the first electrode and the second electrode, wherein the first layer comprises a light-emitting material, a first material, and a second material, wherein the first material comprises a first anthracene skeleton and a first substituent, wherein the first substituent is bonded to the first anthracene skeleton, wherein the first substituent comprises a heteroaromatic ring, wherein the second material comprises a second anthracene skeleton, a second substituent, and a third substituent, wherein the second substituent is bonded to the second anthracene skeleton, wherein the second substituent comprises an aromatic ring whose ring structure is composed of carbon, wherein the third substituent is bonded to the second anthracene skeleton, wherein the third substituent comprises an aromatic ring whose ring structure is composed of carbon, and wherein the third substituent has a different structure from the second substituent. ### Claim 2 (depends on 1) The light-emitting device according to claim 1, wherein the first substituent comprises a carbazole skeleton. ### Claim 3 (depends on 1) The light-emitting device according to claim 1, wherein the first substituent comprises a dibenzo[c,g]carbazole skeleton and is represented by a general formula (R11), wherein in the general formula (R11), R111 to R122 independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cyclic hydrocarbon group having 3 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted aromatic hydrocarbon group having 6 to 60 carbon atoms. ### Claim 4 (depends on 1) The light-emitting device according to claim 1, wherein at least one of the second substituent and the third substituent comprises a naphthalene ring. ### Claim 5 (depends on 1) The light-emitting device according to claim 1, wherein both the second substituent and the third substituent comprise a naphthalene ring. ### Claim 6 (depends on 2) The light-emitting device according to claim 2, wherein the first material is represented by a general formula (H11), wherein in the general formula (H11), R101 to R129 independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cyclic hydrocarbon group having 3 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted aromatic hydrocarbon group having 6 to 60 carbon atoms. ### Claim 7 (depends on 6) The light-emitting device according to claim 6, wherein the first material is 7-[4-(10-phenyl-9-anthryl)phenyl]-7H-dibenzo[c,g]carbazole represented by a structural formula (H12): ### Claim 8 (depends on 1) The light-emitting device according to claim 1, wherein the second material has a lower electron-transport property than the first material. ### Claim 9 (depends on 1) The light-emitting device according to claim 1, wherein the second material is represented by a general formula (H21), wherein in the general formula (H21), R202 represents hydrogen or a substituent comprising an aromatic ring whose ring structure is composed of carbon, R210 represents a substituent comprising an aromatic ring whose ring structure is composed of carbon, at least one of R202 and R210 comprises a naphthalene ring, R201 to R218 except R202 and R210 independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cyclic hydrocarbon group having 3 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted aromatic hydrocarbon group having 6 to 60 carbon atoms. ### Claim 10 (depends on 9) The light-emitting device according to claim 9, wherein the second material is one selected from 9-(1-naphthyl)-10-[4-(2-naphthyl)phenyl]anthracene represented by a structural formula (H22) and 2,9-di(1-naphthyl)-10-phenylanthracene represented by a structural formula (H23): ### Claim 11 (depends on 1) The light-emitting device according to claim 1, wherein the light-emitting material emits blue fluorescence. ### Claim 12 (depends on 11) The light-emitting device according to claim 11, wherein the light-emitting material is aromatic diamine or heteroaromatic diamine. ### Claim 13 (depends on 1) A light-emitting apparatus comprising: the light-emitting device according to claim 1; and a transistor. ### Claim 14 (depends on 13) An electronic device comprising: the light-emitting apparatus according to claim 13; and at least one of a sensor, an operation button, a speaker, and a microphone.