High purity Triethylstibane is a supporting material for epitaxial growth using metal organic chemical vapor deposition (MOCVD) technology. It can be used to produce ultra-high brightness LED light-emitting diodes, HEMT high electron mobility transistor devices, semiconductor lasers, infrared detectors, solar cells, etc. It is a key material for the development of the optoelectronic industry, and its purity has a crucial impact on the final optoelectronic devices, especially for the functions of high-power and ultra-high brightness LED chips with high technological content.