We report on the fabrication of organic light-emitting devices (OLEDs) using double-buffer layers on the indium tin oxide (ITO) anode. Both the luminance and the quantum efficiency of organic light-emitting devices have been improved by inserting double-buffer layers. Using a step-by-step procedure to smooth hole injection and transport, the energy levels introduced by the insertion layers are an effective method of improving the luminance characteristics. (c) 2005 Elsevier B.V. All rights reserved.