Improving the Fabrication of OLEDs to Increase Light Emission

Abstract

Our research focuses on the fabrication of organic light emitting diodes (OLEDs). To produce efficient OLEDs, charges must be injected into the active organic layer where they can recombine to emit light. In our project, we focused on three ways to improve this process. A nitrogen glovebox with an oxygen sensor was designed and built to slow the oxidation process of the active organic layer and to provide an oxygen-sparse environment to store OLEDs. An additional layer (the polymer PEDOT) was introduced into our fabrication process to assist with the injection of charge carriers. Finally, a plasma cleaner was employed in our sample preparation. This both helps remove unwanted material from substrates and improves the work function of the device’s anode to aid in charge injection. With the implementation of these processes, we expect an improvement in OLED light emission, and a more favorable magnetoresistance.