Light-emitting element, light-emitting device, electronic device, and lighting device

摘要

Provided is a light-emitting element which has high emission efficiency and a long lifetime and is driven at low voltage. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes a compound which gives a first peak at a m/z of around 266.10 in a mass spectrum.

主权项

1. A light-emitting element comprising:
a pair of electrodes; and an organic compound between the pair of electrodes, wherein the organic compound gives a first peak at a m/z of 266.10 in a mass spectrum.