Patent ID: 7301167

Claim:
An organic light emitting device, comprising: an anode and a cathode; a plurality of organic light emitting units disposed between the anode and the cathode; and at least one charge transfer layer disposed between adjacent organic light emitting units, wherein the charge transfer layer comprises fullerene, FeCl 3 , SbCl 5 , 7,7,8,8-tetracyanoquinodimethane (TCNQ), 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), lithium (Li), sodium (Na), potassium (K), cesium (Cs), magnesium (Mg), calcium (Ca), silver (Ag), aluminum (Al), nickel (Ni), tetrathiafulvalenes (TTF), bis(ethylenedithio)tetrathiafulvalenes (BEDT-TTF) or combinations thereof.