| abstract |
A light-emitting device includes a first light-emitting element emitting a first light with a first dominant wavelength including a first MQW structure including a first number of MQW pairs; a second MQW structure on the first MQW structure, including a second number of MQW pairs; and a tunneling layer between the first MQW structure and the second MQW structure; and a second light-emitting element emitting a third light with a third dominant wavelength, wherein the first number is different from the second number. |