Lignin-Based Thin Films in Emerging Organic Transistor Devices: Challenges, Strategies, and Applications

Lignocellulosic biomass, a rich and underutilized source of lignin, presents considerable potential for advancing sustainable electronic materials. This review explores the lignin’s role in organic transistor-based devices, considering its integration into various components. It highlights lignin’s structural and chemical characteristics that influence its performance in such devices, along with key factors affecting its processability, interfacial behavior, and compatibility with existing organic electronic materials. By outlining current research directions and emerging applications, this work aims to provide a foundation for further exploration of lignin-based thin films in next-generation, green organic electronics.