skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, 1 January 1996--31 December 1996

Abstract

This report describes Solarex`s accomplishments during this phase of the Photovoltaic Manufacturing Technology (PVMaT) program. During this reporting period, Solarex researchers converted 79% of production casting stations to increase ingot size and operated them at equivalent yields and cell efficiencies; doubled the casting capacity at 20% the cost of buying new equipment to achieve the same capacity increase; operated the wire saws in a production mode with higher yields and lower costs than achieved on the ID saws; purchased additional wire saws; developed and qualified a new wire-guide coating material that doubles the wire-guide lifetime and produces significantly less scatter in wafer thickness; ran an Al paste back-surface-field process on 25% of all cells in manufacturing; completed environmental qualification of modules using cells produced by an all-print metallization process; qualified a vendor-supplied Tedlar/ethylene vinyl acetate (EVA) laminate to replace the combination of separate sheets of EVA and Tedlar backsheet; substituted RTV adhesive for the 3M Very High Bond tape after several field problems with the tape; demonstrated the operation of a prototype unit to trim/lead attach/test modules; demonstrated the use of light soldering for solar cells; demonstrated the operation of a wafer pull-down system for cassetting wet wafers; and presentedmore » three PVMaT-related papers at the 25th IEEE Photovoltaic Specialists Conference.« less

Authors:
 [1]
  1. Solarex Corp., Frederick, MD (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab., Golden, CO (United States); Solarex Corp., Frederick, MD (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
541852
Report Number(s):
NREL/SR-520-23623
ON: DE98000764; TRN: AHC29723%%71
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Oct 1997
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; FABRICATION; SILICON SOLAR CELLS; PROGRESS REPORT; AUTOMATION; RELIABILITY; CAPACITY

Citation Formats

Wohlgemuth, J. Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, 1 January 1996--31 December 1996. United States: N. p., 1997. Web. doi:10.2172/541852.
Wohlgemuth, J. Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, 1 January 1996--31 December 1996. United States. doi:10.2172/541852.
Wohlgemuth, J. Wed . "Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, 1 January 1996--31 December 1996". United States. doi:10.2172/541852. https://www.osti.gov/servlets/purl/541852.
@article{osti_541852,
title = {Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, 1 January 1996--31 December 1996},
author = {Wohlgemuth, J},
abstractNote = {This report describes Solarex`s accomplishments during this phase of the Photovoltaic Manufacturing Technology (PVMaT) program. During this reporting period, Solarex researchers converted 79% of production casting stations to increase ingot size and operated them at equivalent yields and cell efficiencies; doubled the casting capacity at 20% the cost of buying new equipment to achieve the same capacity increase; operated the wire saws in a production mode with higher yields and lower costs than achieved on the ID saws; purchased additional wire saws; developed and qualified a new wire-guide coating material that doubles the wire-guide lifetime and produces significantly less scatter in wafer thickness; ran an Al paste back-surface-field process on 25% of all cells in manufacturing; completed environmental qualification of modules using cells produced by an all-print metallization process; qualified a vendor-supplied Tedlar/ethylene vinyl acetate (EVA) laminate to replace the combination of separate sheets of EVA and Tedlar backsheet; substituted RTV adhesive for the 3M Very High Bond tape after several field problems with the tape; demonstrated the operation of a prototype unit to trim/lead attach/test modules; demonstrated the use of light soldering for solar cells; demonstrated the operation of a wafer pull-down system for cassetting wet wafers; and presented three PVMaT-related papers at the 25th IEEE Photovoltaic Specialists Conference.},
doi = {10.2172/541852},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {10}
}