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Title: Cast Polycrystalline Silicon Photovoltaic Module Manufacturing Technology Improvements: Semiannual Subcontract Report, 8 December 1993 - 30 June 1994

Abstract

This report describes work done under a 3-year program to advance Solarex`s cast polycrystalline silicon manufacturing technology, reduce module production cost, increase module performance, and expand Solarex`s commercial production capacities. The accomplishments described in this report are as follows: (1) the authors designed modifications to casting stations, ceramic molds, and sizing saws to allow for casting and sizing of larger ingots; (2) they demonstrated the casting of ingots with 17% larger volume; (3) the selected and purchased a new wire saw from HCT Shaping Systems; (4) they demonstrated wafering of eight bricks (2,400 wafers or {approximately}4.4 kilowatts at the cell level) in a 6.5-h run; (5) they demonstrated 14% average cell efficiency in the laboratory using an aluminum paste back surface field; (6) the Automation and Robotics Research Institute (ARRI) completed a modeling study of the Solarex module assembly process; (7) they identified and qualified three new lower-cost back sheet materials through accelerated environmental tests; and (8) they designed and built a test structure for mounting frameless modules, and selected two adhesives and began testing their ability to hold modules to the structure.

Authors:
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
41346
Report Number(s):
NREL/TP-411-7497
ON: DE95004065; TRN: AHC29512%%84
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1995
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; SILICON SOLAR CELLS; FABRICATION; ENERGY EFFICIENCY; SILICON; CASTING; CUTTING; PROGRESS REPORT; SUBSTRATES; MATERIALS TESTING; TEST FACILITIES; CUTTING TOOLS; MANUFACTURING; CHEMICAL VAPOR DEPOSITION; SINTERING; EXPERIMENTAL DATA; photovoltaics; solar cells; silicon; manufacturing; modules

Citation Formats

Wohlgemuth, J. Cast Polycrystalline Silicon Photovoltaic Module Manufacturing Technology Improvements: Semiannual Subcontract Report, 8 December 1993 - 30 June 1994. United States: N. p., 1995. Web. doi:https://dx.doi.org/10.2172/41346.
Wohlgemuth, J. Cast Polycrystalline Silicon Photovoltaic Module Manufacturing Technology Improvements: Semiannual Subcontract Report, 8 December 1993 - 30 June 1994. United States. doi:https://dx.doi.org/10.2172/41346.
Wohlgemuth, J. Wed . "Cast Polycrystalline Silicon Photovoltaic Module Manufacturing Technology Improvements: Semiannual Subcontract Report, 8 December 1993 - 30 June 1994". United States. doi:https://dx.doi.org/10.2172/41346. https://www.osti.gov/servlets/purl/41346.
@article{osti_41346,
title = {Cast Polycrystalline Silicon Photovoltaic Module Manufacturing Technology Improvements: Semiannual Subcontract Report, 8 December 1993 - 30 June 1994},
author = {Wohlgemuth, J.},
abstractNote = {This report describes work done under a 3-year program to advance Solarex`s cast polycrystalline silicon manufacturing technology, reduce module production cost, increase module performance, and expand Solarex`s commercial production capacities. The accomplishments described in this report are as follows: (1) the authors designed modifications to casting stations, ceramic molds, and sizing saws to allow for casting and sizing of larger ingots; (2) they demonstrated the casting of ingots with 17% larger volume; (3) the selected and purchased a new wire saw from HCT Shaping Systems; (4) they demonstrated wafering of eight bricks (2,400 wafers or {approximately}4.4 kilowatts at the cell level) in a 6.5-h run; (5) they demonstrated 14% average cell efficiency in the laboratory using an aluminum paste back surface field; (6) the Automation and Robotics Research Institute (ARRI) completed a modeling study of the Solarex module assembly process; (7) they identified and qualified three new lower-cost back sheet materials through accelerated environmental tests; and (8) they designed and built a test structure for mounting frameless modules, and selected two adhesives and began testing their ability to hold modules to the structure.},
doi = {https://dx.doi.org/10.2172/41346},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {3}
}