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  • 1
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    Polycrystalline silicon research and development (1986)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The development of fluidized-bed reactor technology for producing silicon by the pyrolysis of silanes is described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: JPL, California Inst. of Tech., Pasadena Proceedings of the 26th Project Integration Meeting; p 687-692
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  • 2
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    A fluidized-bed reactor for silane pyrolysis (1984)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The silane decomposition in a fluidized bed reactor was studied. The process feasibility and operating windows were determined. Long duration tests were conducted and silicon purity was demonstrated. A high purity linear was installed in the fluid bed reactor; the FBR product was melted and single crystallized. Product purity improvements are noted.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: JPL Proc. of the 24th Project Integration Meeting; p 247-249
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  • 3
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    Development of the silane process for the production of low-cost polysilicon (1986)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: It was recognized that the traditional hot rod type deposition process for decomposing silane is energy intensive, and a different approach for converting silane to silicon was chosen. A 1200 metric tons/year capacity commercial plant was constructed in Moses Lake, Washington. A fluidized bed processor was chosen as the most promising technology and several encouraging test runs were conducted. This technology continues to be very promising in producing low cost polysilicon. The Union Carbide silane process and the research development on the fluidized bed silane decomposition are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: JPL Proceedings of the Flat-Plate Solar Array Project Workshop on Low-Cost Polysilicon for Terrestrial Photovoltaic Solar-Cell Applications; p 135-145
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  • 4
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    Heterogeneous decomposition of silane in a fixed bed reactor (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Heterogeneous decomposition of silane in a fluidized bed offers an attractive route for the low-cost production of silicon for photovoltaic application. To obtain design data for a fluid bed silane pyrolysis reactor, deposition experiments were conducted in a small-scale fixed bed apparatus. Data on the decomposition mode, plating rate, and deposition morphology were obtained in the temperature range 600-900 C. Conditions favorable for heterogeneous decomposition with good deposition morphology were identified. The kinetic rate data showed the reaction to be first order with an activation energy of 38.8 kcal/mol, which agrees well with work done by others. The results are promising for the development of an economically attractive fluid bed process.
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: Electrochemical Society; vol. 129
    Format: text
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  • 5
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    Silane pyrolysis in a free-space reactor (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The Union Carbide process for producing silicon for photovoltaic applications proceeds via high purity silane as an intermediate. Decomposition of silane is accomplished in a freespace reactor which utilizes recirculating product hydrogen and silicon to transfer energy from a heated wall to an entering silane jet. Reaction occurs away from the wall, minimizing problems with wall deposition and contamination. A series of long duration and throughput tests has proven the feasibility of this concept. High purity powder can be produced at flows up to 4.5 kg/hr (10 lb/hr) in a 0.2 m (8 inch) diameter reactor with better than 99.99% conversion efficiency. This work is funded by DOE under JPL's Low Cost Solar Array (LSA) program.
    Keywords: ENGINEERING (GENERAL)
    Type: Photovoltaic Specialists Conference; May 12, 1981 - May 15, 1981; Kissimmee, FL
    Format: text
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  • 6
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    Heterogeneous decomposition of silane in a fixed bed reactor (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Heterogeneous decomposition of silane in a fluidized bed offers an attractive route for the low-cost production of silicon for photovoltaic application. To obtain design data for a fluid bed silane pyrolysis reactor, deposition experiments were conducted in a small-scale fixed bed apparatus. Data on the decomposition mode, plating rate, and deposition morphology were obtained in the temperature range 600 900 C. Conditions favorable for heterogenous decomposition with good deposition morphology were identified. The kinetic rate data showed the reaction to be first order with an activation energy of 38.8 kcal/mole, which agrees well with work done by others. The results are promising for the development of an economically attractive fluid bed process.
    Keywords: CHEMISTRY AND MATERIALS (GENERAL)
    Type: Symposium on Materials and New Processing Technologies for Photovoltaics; Oct 01, 1980; Hollywood, FL
    Format: text
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