HIGH-TECH PRODUCTION OF PHOTO-ENERGY IN KAZAKHSTAN BASED ON THE SARYKOL QUARTZ DEPOSIT
Ключевые слова:solar grade silicon, silicon purification, monolike technology, solar cell.
The technology of silicon purification to solar grade silicon for metallurgical silicon obtained from
the Sarykol quartz deposit by carbothermic reduction is presented. This technology is based on metallurgical
methods of purification, namely gas-slag refining and directional crystallization. Silicon ingots are grown from the
solar grade silicon using "monolike" technology. Photovoltaic converters are manufactured and investigated. Solar
cells from "monolike" silicon have a higher efficiency of 17-18.4%, in comparison with solar cells made from
multicrystalline silicon. Converters with high efficiency were tested for the light-induced degradation effect.