POLYSACCHARIDE AS ECO-FRIENDLY GATE DIELECTRIC FORORGANIC FIELD EFFECT TRANSISTORS

This article presents a comprehensive literature review on the use of polysaccharides as dielectric materials in organic field-effect transistors (OFETs). The dielectric properties of various polysaccharides-such as cellulose and its derivatives, natural gums, chitosan, and starch are thoroughly examined, with particular emphasis on their polarization behavior, relative permittivity, capacitance density, thermal stability, and film-forming ability. The article also analyses how these properties influence the electrical performance of OFETs, including charge carrier mobility, threshold voltage, operating voltage, leakage current, and hysteresis.Literature findings indicate that polysaccharide-based dielectrics, owing to their biodegradability, natural abundance, and compatibility with low-temperature processing, represent a promising alternative for the development of green, flexible, and sustainable organic electronics. Recommendations are provided to address key technical challenges such as moisture sensitivity and interfacial defects in order to further optimize device performance and support a more sustainable and environmentally friendly technological approach.