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Light-Emitting Element, Light-Emitting Device, Electronic Device, Lighting Device, and Organic Compound

  • US 20160028022A1
  • Filed: 07/23/2015
  • Published: 01/28/2016
  • Est. Priority Date: 07/25/2014
  • Status: Active Grant
First Claim
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1. A light-emitting element comprising:

  • an EL layer between an anode and a cathode,wherein the EL layer includes a light-emitting layer,wherein the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance,wherein a combination of the first organic compound and the second organic compound forms an exciplex,wherein a HOMO level of the first organic compound is lower than a HOMO level of the second organic compound, andwherein a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

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