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Title: Improvements in cast polycrystalline silicon PV manufacturing technology

Abstract

The objectives of this NREL sponsored Photovoltaic Manufacturing Technology (PVMaT) Program are to advance Solarex{close_quote}s cast polycrystalline silicon manufacturing technology, reduce module production cost in half, increase module performance and expand Solarex{close_quote}s commercial production capacity by a factor of three. To meet these objectives Solarex has: (1) Modified the casting process and stations and is now casting larger ingots in production; (2) Developed wire saw technology to cut wafers with less kerf loss and has transferred this technology to production; (3) Developed a laboratory process to increase cell efficiencies using back surface fields, mechanical texturing and gettering; (4) Modified the casting, wires saw and cell processes in order to fabricate larger (15.2 cm by 15.2 cm) wafers and cells; (5) Improved the automated assembly of modules, reducing labor requirements and increasing throughput; and (6) Developed a frameless module with a lower cost backsheet and a simple, low cost electrical termination system. Solarex is now in the process of developing the equipment necessary for automated handling of thin 15.2 cm by 15.2 cm wafers and cells. This paper will discuss the efforts during the first two and a half years of the program. {copyright} {ital 1997 American Institute of Physics.}

Authors:
 [1]
  1. Solarex, A Business Unit of Amoco/Enron Solar, Frederick, Maryland (United States)
Publication Date:
OSTI Identifier:
564858
Report Number(s):
CONF-961178-
Journal ID: APCPCS; ISSN 0094-243X; TRN: 9722M0036
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 394; Journal Issue: 1; Conference: National Renewable Energy Laboratory (NREL)/Sandia National Laboratories (SNL) photovoltaics program review meeting, Lakewood, CO (United States), 18-22 Nov 1996; Other Information: PBD: Feb 1997
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PHOTOVOLTAIC CELLS; MANUFACTURING; SILICON; COST ESTIMATION; PERFORMANCE; CAST METHOD; GETTERING; FABRICATION

Citation Formats

Wohlgemuth, J H. Improvements in cast polycrystalline silicon PV manufacturing technology. United States: N. p., 1997. Web. doi:10.1063/1.52857.
Wohlgemuth, J H. Improvements in cast polycrystalline silicon PV manufacturing technology. United States. doi:10.1063/1.52857.
Wohlgemuth, J H. Sat . "Improvements in cast polycrystalline silicon PV manufacturing technology". United States. doi:10.1063/1.52857.
@article{osti_564858,
title = {Improvements in cast polycrystalline silicon PV manufacturing technology},
author = {Wohlgemuth, J H},
abstractNote = {The objectives of this NREL sponsored Photovoltaic Manufacturing Technology (PVMaT) Program are to advance Solarex{close_quote}s cast polycrystalline silicon manufacturing technology, reduce module production cost in half, increase module performance and expand Solarex{close_quote}s commercial production capacity by a factor of three. To meet these objectives Solarex has: (1) Modified the casting process and stations and is now casting larger ingots in production; (2) Developed wire saw technology to cut wafers with less kerf loss and has transferred this technology to production; (3) Developed a laboratory process to increase cell efficiencies using back surface fields, mechanical texturing and gettering; (4) Modified the casting, wires saw and cell processes in order to fabricate larger (15.2 cm by 15.2 cm) wafers and cells; (5) Improved the automated assembly of modules, reducing labor requirements and increasing throughput; and (6) Developed a frameless module with a lower cost backsheet and a simple, low cost electrical termination system. Solarex is now in the process of developing the equipment necessary for automated handling of thin 15.2 cm by 15.2 cm wafers and cells. This paper will discuss the efforts during the first two and a half years of the program. {copyright} {ital 1997 American Institute of Physics.}},
doi = {10.1063/1.52857},
journal = {AIP Conference Proceedings},
number = 1,
volume = 394,
place = {United States},
year = {1997},
month = {2}
}