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Process feasibility study in support of silicon material, Task I. Quarterly technical progress report (XVIII), December 1, 1979-February 29, 1980

Description: Analyses of process system properties were continued for important chemical materials involved in the several processes under consideration for semiconductor and solar cell grade silicon production. Major activities were devoted to physical, thermodynamic and transport property data for silicon. Property data are reported for vapor pressure heat of vaporization, heat of sublimation, liquid heat capacity and solid heat capacity as a function of temperature to permit rapid usage in engineering. C… more
Date: March 1, 1980
Creator: Yaws, C.L. & Li, K.Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material task 1. Quarterly technical progress report (XX), June 1-August 31, 1980

Description: Analyses of process system properties were continued for chemical materials important in the production of silicon including compilation and collection activities of the property data for use in the final report. Major efforts in chemical engineering analysis centered on the DCS process - Case A which involves production of dichlorosilane (DCS) as a silicon source material for polysilicon production in the Hemlock Semiconductor Corporation program. The preliminary process design of a plant to p… more
Date: September 1, 1980
Creator: Yaws, C.L. & Li, K.Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material Task I. Quarterly technical progress report (XIX), March 1-May 31, 1980

Description: Analyses of process system properties were continued for chemical materials important in the production of silicon. Major physical, thermodynamic and transport property data are reported for silicon including critical constants, vapor pressure, heat of vaporization, heat of sublimation, heat capacity, density, surface tension, viscosity and thermal conductivity. The property data covers both liquid and solid phases and are reported as a function of temperature for rapid engineering usage. Major… more
Date: June 1, 1980
Creator: Yaws, C.L. & Li, K.Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material task 1. Quarterly technical progress report (XVII), September-November 1979

Description: Analyses were continued for process system properties of chemical materials important in the production of silicon. Primary activities were initiated for physical, transport and thermodynamic property data of silicon. Progress and status including preliminary data collection and analysis results are reported for the primary activities of data collection (90%), data analysis (80%), estimation (70%), and correlation (60%). Process design results for BCL process-Case A (two deposition reactors and… more
Date: December 1, 1979
Creator: Li, K. Y.; Hansen, K. C. & Yaws, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material, Task 1. Quarterly technical progress report (XVI), June-August, 1979

Description: During this reporting period, primary efforts were expended on process system properties, chemical engineering and economic analysis. Analysis of process system properties was continued for silicon source materials under consideration for producing silicon. The following property data are reported for dichlorosilane which is involved in processing operations for silicon: critical constants, vapor pressure, heat of vaporization, heat capacity, density, surface tension, thermal conductivity, heat… more
Date: September 1, 1979
Creator: Li, K. Y.; Hansen, K. C. & Yaws, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material Task I. Quarterly technical progress report (XIV), January-March 1979

Description: Analyses of process system properties was continued for materials involved in the alternate processes under consideration for solar cell grade silicon. The following property data are reported for silicon tetrafluoride: critical constants, vapor pressure, heat of vaporization, heat capacity, density, surface tension, viscosity, thermal conductivity, heat of formation, and Gibb's free energy of formation. In the viscosity investigation, experimentally determined values for gas viscosity of trich… more
Date: March 1, 1979
Creator: Li, K. Y.; Hansen, K. C. & Yaws, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material task 1. Quarterly technical progress report (XIII), September--December 1978

Description: Major activities during this reporting period centered on process system properties, chemical engineering and economic analyses. Analyses of process system properties was continued for materials involved in the alternate processes under consideration for solar cell grade silicon. The following property data are reported for trichlorosilane: critical constants, vapor pressure, heat of vaporization, gas heat capacity, liquid heat capacity, density, surface tension, viscosity, thermal conductivity… more
Date: December 1, 1978
Creator: Li, K. Y.; Hansen, K. C. & Yaws, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process feasibility study in support of silicon material Task I. Final report, October 1, 1975-February 6, 1981

Description: The Low-Cost Solar Array (LSA) Project is directed toward effective cost reduction in the production of silicon for solar cells. Results are presented for process system properties, chemical engineering and economic analyses of the new technologies and processes being developed for the production of lower cost silicon for solar cells. Major physical, thermodynamic and transport property data are reported for the following silicon source and processing chemical materials: silane, silicon tetrach… more
Date: February 6, 1981
Creator: Yaws, C. L.; Li, K. Y.; Hopper, J. R.; Fang, C. S. & Hansen, K. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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