EX-10.20 31 h00738exv10w20.txt EX-10.20 CONTRACT BETWEEN JIANGSU LINYANG SOLARFUN CO., LTD. AND ISC KONSTANZ Exhibit 10.20 Contract Between Jiangsu Linyang Solarfun Co., Ltd. and ISC Konstanz, dated September 5, 2006 CONTRACT JIANGSU LINYANG SOLARFUN CO. LTD., No.666, Linyang Road, Qidong, Jiangsu Province, 226200, P.R China and ISC KONSTANZ, Rudolf-Diesel-Straae 15, 78467, Konstanz, Germany 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:
------------------------------------------------------------------------------------------------------------------------------------ DELIVERY NO PROCESS REMARK COST [EUR] ------------------------------------------------------------------------------------------------------------------------------------ (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] ------------------------------------------------------------------------------------------------------------------------------------ (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 ------------------------------------------------------------------------------------------------------------------------------------ (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 ------------------------------------------------------------------------------------------------------------------------------------ (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 ------------------------------------------------------------------------------------------------------------------------------------ (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 ------------------------------------------------------------------------------------------------------------------------------------ (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] ------------------------------------------------------------------------------------------------------------------------------------ Wafer size: 125mm 50(euro) for chemicals Target: 15-15,5% efficiency 400(euro) for equipment depreciation ------------------------------------------------------------------------------------------------------------------------------------ (7) Process improvement and troubleshooting at Solarfun on a time and travel cost basis ------------------------------------------------------------------------------------------------------------------------------------ (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. ------------------------------------------------------------------------------------------------------------------------------------ (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 ------------------------------------------------------------------------------------------------------------------------------------ (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 ------------------------------------------------------------------------------------------------------------------------------------ (11) REPORTING Publication only if agreed Included between all parties Summary and recommendation ------------------------------------------------------------------------------------------------------------------------------------ (12) Others on request on a time (and travel cost) basis ------------------------------------------------------------------------------------------------------------------------------------
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). 3 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/ Yonghua Lu /s/ Kristian Peter Yonghua Lu Dr. Kristian Peter Jiangsu Linyang Solarfun Co. Ltd ISC Konstanz 4