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

Title: Thin EFG octagons. Semiannual subcontract report, 1 April 1993--30 September 1993

Abstract

This report describes work to advance the manufacturing line capabilities in crystal growth and laser cutting of Mobil Solar`s unique edge-defined film-fed growth (EFG) octagon technology and to reduce the manufacturing costs of 10-cm {times} 10-cm polycrystalline silicon EFG wafers. The report summarizes the significant technical improvements in EFG technology achieved in the first 6 months of the PVMaT Phase 2 and the success in meeting program milestones. Technical results are reported for each of the three main pregrain areas: Task 5 -0 -- Thin octagon growth (crystal growth) -- to reduce the thickness of the octagon to 200 microns; Task 6 -- Laser cutting-to improve the laser cutting process so as to produce wafers with decreased laser cutting damage at increased wafer throughput rates; and Task 7 -- Process control and product specification --to implement advanced strategies in crystal growth process control and productivity designed to increase wafer yields.

Authors:
 [1]
  1. Mobil Solar Energy Corp., Billerica, MA (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab., Golden, CO (United States); Mobil Solar Energy Corp., Billerica, MA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10134916
Report Number(s):
NREL/TP-411-6399
ON: DE94006855; BR: WM1020000
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; SILICON SOLAR CELLS; FABRICATION; PROGRESS REPORT; MANUFACTURING; THIN FILMS; LASER BEAM MACHINING; CRYSTAL GROWTH; 140501; 360601; PHOTOVOLTAIC CONVERSION; PREPARATION AND MANUFACTURE

Citation Formats

Kalejs, J.P.. Thin EFG octagons. Semiannual subcontract report, 1 April 1993--30 September 1993. United States: N. p., 1994. Web. doi:10.2172/10134916.
Kalejs, J.P.. Thin EFG octagons. Semiannual subcontract report, 1 April 1993--30 September 1993. United States. doi:10.2172/10134916.
Kalejs, J.P.. Tue . "Thin EFG octagons. Semiannual subcontract report, 1 April 1993--30 September 1993". United States. doi:10.2172/10134916. https://www.osti.gov/servlets/purl/10134916.
@article{osti_10134916,
title = {Thin EFG octagons. Semiannual subcontract report, 1 April 1993--30 September 1993},
author = {Kalejs, J.P.},
abstractNote = {This report describes work to advance the manufacturing line capabilities in crystal growth and laser cutting of Mobil Solar`s unique edge-defined film-fed growth (EFG) octagon technology and to reduce the manufacturing costs of 10-cm {times} 10-cm polycrystalline silicon EFG wafers. The report summarizes the significant technical improvements in EFG technology achieved in the first 6 months of the PVMaT Phase 2 and the success in meeting program milestones. Technical results are reported for each of the three main pregrain areas: Task 5 -0 -- Thin octagon growth (crystal growth) -- to reduce the thickness of the octagon to 200 microns; Task 6 -- Laser cutting-to improve the laser cutting process so as to produce wafers with decreased laser cutting damage at increased wafer throughput rates; and Task 7 -- Process control and product specification --to implement advanced strategies in crystal growth process control and productivity designed to increase wafer yields.},
doi = {10.2172/10134916},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}