Patent ID: 8860019
Filing Date: 2014-10-14
Classification: H01L

Abstract:
1. A light-emitting device comprising: a first electrode; a light-emitting layer comprising a light-emitting material over the first electrode; and a second electrode over the light emitting layer, wherein the light-emitting layer comprises a first layer and a second layer, wherein the second layer is over the first layer, wherein the first layer comprises the light-emitting material and a first organic material being capable of transporting hole, wherein the second layer comprises a second organic material being capable of transporting electron, wherein the first organic material is any one of an anthracene derivative, a phenanthrene derivative, a pyrene derivative, a chrysene derivative, and a dibenzo[g,p]chrysene derivative, and wherein the second organic material is any one of an anthracene derivative, a phenanthrene derivative, a pyrene derivative, a chrysene derivative, and a dibenzo[g,p]chrysene derivative.