Enhancing Carrier Mobility in Organic Light Emitting Diode Based Polyfluorene by Self-Assembled Monolayers Technique on Indium Tin Oxide

An organic compound (1'-4-iodophenyl) trihidroxysilane (OH-IPhSi) functionalized as hole transporting material was synthesized and used as interface self-assembled monolayers (SAM) on ITO film. To analyze the effect of a SAM layers on the characteristics an organic light emitting diode (Organic LED), a typical Organic LED device (ITO/OH-IPhSi/polymer/LiF/Al) was fabricated. The SAM-treatment ITO device performed a higher mobility than the bare ITO device. The carrier mobility properties were calculated by space-charge-limited current measurements (SCLC) technique for polyfluorene (PFO) polymer Organic LED devices