Chlorine Free Technology for Solar-Grade Silicon Manufacturing: Preprint

Conference · Sun Aug 01 00:00:00 EDT 2004

OSTI ID:15009895

Strebkov, D S; Pinov, A P; Zadde, V V; Lebedev, E N; Belov, E P; Efimov, N K; Kleshevnikova, S I; Touryan, K; Bleak, D

Due to the development of the solar energy industry, a significant increase of polysilicon feedstock (PSF) production will be required in near future. The creation of special technology of solar grade polysilicon feedstock production is an important problem. Today, semiconductor-grade polysilicon is mainly manufactured using the trichlorosilane (SiHCl3) distillation and reduction. The feed-stock for trichlorosilane is metallurgical-grade silicon, the product of reduction of natural quartzite (silica). This polysilicon production method is characterized by high energy consumption and large amounts of wastes, containing environmentally harmful chlorine based compounds. In the former USSR the principles of industrial method for production of monosilane and polycrystalline silicon by thermal decomposition of monosilane were founded. This technology was proved in industrial scale at production of gaseous monosilane and PSF. We offered new chlorine free technology (CFT). Originality and novelty of the process were confirmed by Russian and US patents.

• Research Organization: National Renewable Energy Lab., Golden, CO (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC36-99-GO10337
• OSTI ID: 15009895
• Report Number(s): NREL/CP-520-36750; TRN: US200430%%1578
• Resource Relation: Conference: Prepared for the 14th Workshop on Crystalline Silicon Solar Cells and Modules, Winter Park, CO (US), 08/08/2004--08/11/2004; Other Information: PBD: 1 Aug 2004
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
36 MATERIALS SCIENCE
42 ENGINEERING
CHLORINE
DISTILLATION
ENERGY CONSUMPTION
MANUFACTURING
PRODUCTION
PYROLYSIS
QUARTZITES
SILICA
SILICON
SILICON SOLAR CELLS
SOLAR ENERGY
WASTES
IMPURITIES
CRYSTAL GROWTH
PASSIVATION
MICROELECTRONICS
PV
PHOTOVOLTAICS
SOLAR CELLS
CRYSTALLINE SILICON
MATERIALS AND PROCESSES
MODULE
DEVICE PROCESS
DEFECT
SOLAR ENERGY - PHOTOVOLTAICS