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Silicon purification technology for solar cells at low costs and medium scale (SPURT)

Objective

Objectives and Problems to be solved :SPURT aims at alleviating the PV industry dependence on scrap from the electronics industry and at the same time at reducing the cost of feedstock. The bottleneck that all producers of sog-Sibased on carbothermic reduction face is to remove carbon (left from the carbon used to reduce the quartz) and metals (present as impurities in the quartz) from the silicon on large-scale in a cost effective and reliable manner. SPURT aims to develop an economically attractive solution for the purification of silicon produced via carbothermic routes. By combining experiments with hydrodynamic and thermo-chemical simulations, relevant parameters will be studied and optimised to enable selection of the most economical large-scale purification technique. Thus, the project will provide the detailed knowledge necessary to make a basis of design for a pilot plant for sag-Si. In SPURT, the purification will be studied on a scale of up to 250 kg/batch. The development of production technology for large quantities of sog-Si will enable the continued growth of the PVsectorat 30% or more per year. This provides an opportunity for the SME's to set up large-scale production of sog-Si. Description of Work :The work is structured in 5 phases: development of Silicon metal (Si) based on a continuous run of the SOLSILC R&D process, development on small-scale of process parameters for the purification process on medium-scale, development of medium-scale process, optimisation of medium-scale process and dissemination and exploitation. The work is divided into 7 work packages, each consisting of a number of interrelated tasks:
1. Silicon metal development.
2. Small scale experiments for purification and directional solidification.
3. Development of medium scale process, both carbon removal as directional solidification.
4. Optimisation through several test runs of the medium scale process.
5. Analysis of the test material and of the solar cells produced from these test materials.
6. Preparation for implementation and dissemination & training.
7. Project management. Expected results and exploitation plans :The project duration is 24 months. After 1 year the feasibility of the small scale process has been assessed, based on the process developed. The consortium is confidant, that by the end of the project, the medium scale process will be made, and the process parameters will be clear. Moreover by then, a basis of design of the process is drawn up, and the technology is ready to be implemented in a 1000 ton/annum sog-Si plant. The project will lead to a basis of design for a sog-Si pilot plant, with a capacity of 1000 t/a. Commercial scale production is envisaged to commence in 2006.

Call for proposal

Data not available

Coordinator

S'ENERGY B.V.
Address
Boompjes 390
Rotterdam
Netherlands
 

Participants (4)

ENERGY RESEARCH CENTRE OF THE NETHERLANDS
Netherlands
Address
Westerduinweg 3
1755 ZG Petten
 
FOUNDATION FOR TECHNICAL AND INDUSTRIAL RESEARCH AT THE NORWEGIAN INSTITUTE OF TECHNOLOGY
Norway
Address
1,Forskningsveien 1
0314 Oslo
 
SCANARC PLASMA TECHNOLOGIES AB
Sweden
Address
Vaernavaegen 7
Hofors
 
SCANWAFER AS
Norway
Address
Oernesveien 3
8160 Glomfjord