Germanium(IV) ethoxide is widely used in the field of materials science, particularly in the synthesis of germanium-based nanomaterials and thin films. It serves as a precursor in chemical vapor deposition (CVD) and sol-gel processes to create high-purity germanium oxide coatings, which are essential in optical applications such as anti-reflective coatings and waveguides. Additionally, it plays a role in the development of advanced ceramics and glass materials, where its reactivity allows for precise control over material properties. In electronics, it is utilized in the fabrication of germanium-containing semiconductors, which are critical for high-performance transistors and sensors. Its application in catalysis is also notable, as it can be used to design catalysts for organic transformations.