Large-Scale PV Module Manufacturing Using Ultra-Thin Polycrystalline Silicon Solar Cells: Annual Subcontract Report, 1 October 2003--30 September 2004

Wohlgemuth, J. ; Narayanan, M.

National Renewable Energy Laboratory (U.S.)

关键词: Large-Scale;    Wafer Thickness;    14 Solar Energy;    Pv;    Capacity;   

DOI  :  10.2172/15011485
RP-ID  :  NREL/SR-520-37738
RP-ID  :  AC36-99-GO10337
RP-ID  :  15011485

美国|英语

来源: UNT Digital Library

【 摘 要 】

The major objectives of this program are to continue the advancement of BP Solar polycrystalline silicon manufacturing technology. The program includes work in the following areas: Efforts in the casting area to increase ingot size, improve ingot material quality, and improve handling of silicon feedstock as it is loaded into the casting stations; developing wire saws to slice 100- m-thick silicon wafers on 290- m centers; developing equipment for demounting and subsequent handling of very thin silicon wafers; developing cell processes using 100- m-thick silicon wafers that produce encapsulated cells with efficiencies of at least 15.4% at an overall yield exceeding 95%; expanding existing in-line manufacturing data reporting systems to provide active process control; establishing a 50-MW (annual nominal capacity) green-field Mega-plant factory model template based on this new thin polycrystalline silicon technology; facilitating an increase in the silicon feedstock industry's production capacity for lower-cost solar-grade silicon feedstock.