Organic compound and light-emitting device

A light-emitting device comprising:

• a cathode;
• and
• a cap layer over the cathode,
• wherein the cap layer comprises an organic compound represented by General Formula (G1):
• wherein each of R1 to R4 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-1),
• wherein each of R5 to R8 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-3),
• wherein at least one of R5 to R8 represents the substituent represented by General Formula (G1-3),
• wherein Ar11 represents a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein Ar12 represents a substituted or unsubstituted monovalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted monovalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein n11 represents an integer greater than or equal to zero and less than or equal to three and n12 represents an integer greater than or equal to one and less than or equal to three,
• wherein each of Ar13, Ar1, and Ar16 independently represents a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein each of Ar14 and Ar17 independently represents a substituted or unsubstituted monovalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted monovalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein at least two of Ar, Ar16, and Ar17 represent a monovalent or divalent bicyclic or tricyclic aromatic hydrocarbon group or a monovalent or divalent aromatic heterocyclic group,
• wherein each of n13, n15, and n16 independently represents an integer greater than or equal to zero and less than or equal to three and each of n14 and n17 independently represents an integer greater than or equal to one and less than or equal to three, and
• wherein n15+n16+n17>n13+n14 is satisfied.

A light-emitting device comprising:

• a cathode;
• and
• a cap layer over the cathode,
• wherein the cap layer comprises an organic compound represented by General Formula (G1):
• wherein each of R1 to R4 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-1),
• wherein each of R5 to R8 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-2),
• wherein at least one of R5 to R8 represents the substituent represented by General Formula (G1-2),
• wherein Ar11 represents a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein Ar12 represents a substituted or unsubstituted monovalent aromatic hydrocarbon group having 14 to 30 carbon atoms or a substituted or unsubstituted monovalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein n11 represents an integer greater than or equal to zero and less than or equal to three and n12 represents an integer greater than or equal to one and less than or equal to three,
• wherein each of Ar13 and Ar15 independently represents a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein each of Ar14 and Ar17 independently represents a substituted or unsubstituted monovalent aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted monovalent aromatic heterocyclic group having 3 to 30 carbon atoms,
• wherein at least one of Ar15 and Ar17 represents phenanthrene,
• wherein when Ar17 represents phenanthrene, a 2-position or a 3-position of the phenanthrene is bonded to another group,
• wherein n13 represents an integer greater than or equal to zero and less than or equal to three and each of n14, n15, and n17 independently represents an integer greater than or equal to one and less than or equal to three, and
• wherein n15+n17>n13+n14 is satisfied.