Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) is widely used in the field of organic electronics due to its excellent electrical conductivity and transparency. It is commonly applied as a hole transport layer in organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs), enhancing device efficiency. Additionally, it is utilized in the fabrication of transparent conductive films for touchscreens and flexible displays. Its biocompatibility also makes it suitable for use in biosensors and bioelectronics, where it can interface with biological systems. The material is further employed in antistatic coatings and electrochemical sensors, leveraging its stability and conductive properties.