Transparent Electrodes for Flexible Organic Light-Emitting Diodes and Displays
Organic light-emitting diodes (OLEDs) displays using flexible substrate have many attractive features. One of the key issues in achieving such displays is fabricate flexible transparent electrodes. The search for materials that can replace transparent conductive oxides accelerated significantly in the past few years and several other materials have been proposed. This review summarizes criteria for flexible transparent electrodes and review five different groups of materials: (i) transparent conductive oxides, (ii) nanowires and thin metal films, (iii) carbon nanotubes, (iv) graphene, and (v) conductive polymers. The promises and the remaining challenges for alternatives of transparent conductive oxides in organic light-emitting diodes are discussed.
Keywords: Transparent conductors; organic light-emitting diode; nanowires; carbon nanotubes;, graphene; conductive polymer