Used as a precursor in the production of germanium-based semiconductors for electronics and fiber optics. Commonly applied in the synthesis of high-purity germanium crystals for infrared optics, detectors, and solar cells. Also utilized in doping processes for transistors and in the development of specialized glasses with high refractive index and low dispersion. Plays a role in catalysis and in the fabrication of optoelectronic devices due to its favorable electronic properties.