ELECTROLUMINESCENCE FROM DOUBLE LAYER ORGANIC LIGHT EMITTING DIODES AT DIFFERENT THICKNESSES OF PVK LAYER
SOFYAN A. TAYA *
Department of Physics, Islamic University of Gaza, Gaza, Palestine
TAHER M. EL-AGEZ
Department of Physics, Islamic University of Gaza, Gaza, Palestine
AHED ALAFGHANI
Department of Physics, Islamic University of Gaza, Gaza, Palestine
*Author to whom correspondence should be addressed.
Abstract
In this work, organic light emitting diodes were fabricated using a double layer device with the general structure ITO/PVK/dye/InGa. Three different dyes were used, namely: Rhodamine B, Crystal violet, and Bromophenol blue. Three different PVK layer thicknesses were used with each dye. The double layer system was sandwiched between indium tin oxide (ITO) and Indium-Gallium alloy (InGa) as anode and cathode, respectively. The J-V characteristic curves and electroluminescence emitted from the devices were investigated in details with the PVK layer thickness. The conduction mechanisms were also studied.
Keywords: PVK;, organic light emitting diode, electroluminescence