Exhibit 10.20
Contract Between Jiangsu Linyang Solarfun Co., Ltd. and ISC Konstanz, dated
September 5, 2006
CONTRACT
JIANGSU LINYANG SOLARFUN CO. LTD.,
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and
ISC KONSTANZ,
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agree to cooperate in order to improve the Solarfun's mc-Si and Cz-Si solar cell
processes. For this end the following work program will be implemented:
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DELIVERY NO PROCESS REMARK COST [EUR]
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(1) VISIT SOLARFUN (August 2006) Travelling: ISC Konstanz 6.750(euro)
co-workers use economy class and
RECORD OF CURRENT PROCESSES cheap flight connections.
Two scientists from ISC Konstanz will visit Solarfun Max. 2500(euro) for travelling and
for one week and analyse the current cell process. accommodation
They will give a first estimation of possible
improvements. 4250(euro) for two person weeks
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DELIVERY NO PROCESS REMARK COST [EUR]
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(2) LOSS ANALYSIS (Start: September 2006) On five Detailed characterization of at 4.500(euro)
typical Si solar cells: least five typical Si solar
cells.
- illuminated and dark IV-characteristics
Determination of electrical and
-IQE (internal quantum efficiency) optical losses of such devices.
-Reflection on cell surface 4250(euro) for two person weeks
-LBIC (light induced current) 25(euro) for chemicals and small
spare parts
-Emitter and BSF profile by ECV
225(euro) for equipment depreciation
-optical inspection of metal fingers
1 person, 2 weeks
-measurement of contact resistivities
-lifetime measurements on wafers
-Computer simulation to determine the further
potential of such devices
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(3) STANDARD CELL PROCESS AT ISC KONSTANZ 4.700(euro)
Standard cell process on 50 monowafers and 4250(euro) for two person weeks
characterisation.
50(euro) for chemicals
Wafer size: 125mm.
400(euro) for equipment depreciation
Target: 16,5-17% efficiency for Cz-Si
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(4) STANDARD CELL PROCESS AT ISC KONSTANZ option
Standard cell process on 50 monowafers and 4250 (euro) for two person
characrerisation of different Solarfun providers. weeks
Wafer size: 125mm 50(euro) for chemicals
Target: 16,5-17% efficiency for Cz-Si 400(euro) for equipment depreciation
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(5) STANDARD CELL PROCESS AT ISC KONSTANZ 4.700(euro)
Standard cell process on 50 mc-wafers and 4250(euro) for two person weeks
characterisation.
50(euro) for chemicals
Wafer size: 125mm
400(euro) for equipment depreciation
Target: 15-15,5% efficiency
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(6) STANDARD CELL PROCESS AT ISC KONSTANZ option
Standard cell process on 50 mc-wafers and 4250 (euro) for two person weeks
characterisation of different Solarfun providers.
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DELIVERY NO PROCESS REMARK COST [EUR]
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Wafer size: 125mm 50(euro) for chemicals
Target: 15-15,5% efficiency 400(euro) for equipment depreciation
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(7) Process improvement and troubleshooting at Solarfun on a time and travel cost basis
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(8) ESTIMATION OF HIGH TEMPERATURE PROCESS STEPS Wafers from different 2.100(euro)
providers react different
High temperature treatment (e.g. 900(0)C/300min) of on high temperature process
Solarfun wafers and wafers from at least two further steps.
providers for comparison
High temp. process are
Lifetime measurements for characterisation necessary for some advanced cell
concepts.
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(9) IMPROVEMENT OF METALLISATION 4250(euro) for two person weeks 4.750(euro)
Solarfun wafers will be metallised with newly 100(euro) for chemicals
developed pastes and screens on improved emitters to
increase the spectral response of the cells 400(euro) for equipment
especially in the short wavelength range. depreciation
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(10) WORKSHOP on a time and travel cost basis
1-2 scientists from ISC Konstanz will held a 3 days
workshop at Solarfun based on the achieved results
and possible implementations
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(11) REPORTING Publication only if agreed Included
between all parties
Summary and recommendation
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(12) Others on request on a time (and travel cost) basis
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It is envisaged to agree a 36 months framework program.
The prices are net. Additional VAT (currently 16%) must be charged for the
person hours spent in Germany (Konstanz).
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Conditions:
1/3 advanced payment
1/3 after mid term when at least half the work has been delivered
1/3 after finalization and reporting
Details of the work program are confidential and must not be disclosed to third
parties or the publicity unless it is agreed by both parties in a written
notice.
Date: 05.09.2006
/s/ ▇▇▇▇▇▇▇ ▇▇ /s/ Kristian ▇▇▇▇▇
▇▇▇▇▇▇▇ ▇▇ Dr. Kristian ▇▇▇▇▇
Jiangsu Linyang Solarfun Co. Ltd ISC Konstanz
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