Patent ID: 9385328
Filing Date: 2016-07-05
CPC Classification: C07F,C09K,H01L,H05B

Claim Text:
1. A light-emitting device comprising a light-emitting element, the light-emitting element comprising: a first electrode; a layer comprising a composite material of a hydrocarbon compound and an inorganic compound over the first electrode; a second electrode over the layer; and a hole transport layer between the layer and the second electrode, wherein the hydrocarbon compound has a skeleton selected from a naphthalene skeleton, a phenanthrene skeleton, and a triphenylene skeleton, wherein the skeleton is bonded to a substituent having one or more rings selected from a benzene ring, a naphthalene ring, a phenanthrene ring, and a triphenylene ring, wherein a molecular weight of the hydrocarbon compound is greater than or equal to 350 and less than or equal to 2000, wherein the hydrocarbon compound has an absorption peak at a shorter wavelength than a visible-light wavelength, and wherein the hole transport layer comprises a compound represented by a structural formula (G6) or (G7):