Patent ID: 6586119
Filing Date: 2003-07-01
Classification: H01L,H05B,Y10S,Y10T

Abstract:
A luminescent device comprising an anode, a cathode, and an organic layer provided therebetween, wherein said organic layer has at least one hole transport layer that is in contact with the anode, wherein the work function of the anode (Wf (anode)) and the Fermi level of said hole transport layer (Ef (anode)) that is in contact with the anode satisfy the following relation:Ef(anode)âˆ’0.2&lE;Wf(anode)&lE;Ef(anode)+0.2[eV]and wherein the work function of the cathode (Wf (cathode)) and the Fermi level of the organic layer (Ef (cathode)) that is in contact with the cathode satisfy the following relation:Wf(cathode)