Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) is widely used in the field of electronics due to its excellent conductivity, transparency, and flexibility. It is commonly employed 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, flexible displays, and smart windows. It is also applied in energy storage devices such as supercapacitors and batteries owing to its chemical stability and superior electrical performance. Its biocompatibility makes it suitable for bioelectronics applications, including biosensors, neural interfaces, and medical devices that interface with human tissue. Furthermore, it serves as an antistatic coating for photographic films and electronic packaging materials.