Tau qhov twg los: www.ise.fraunhofer.de
Kev siv cov khoom thauj khoom muaj nqi-xaiv cov sib chwv ua kom pom cov txiaj ntsig ntawm lub siab tshaj plaws ntawm lub hnub ci thaum khaws cia cov txheej txheem ua kom tsis muaj txheej txheem. Nrog 25.3% rau n-hom hnub ci xov tooj ntawm tes nrog thaj tsam tus nqi thauj khoom-xaiv sab nraud rov qab sib cuag, Fraunhofer ISE tuav lub ntiaj teb cov ntaub ntawv rau silicon solar cell tiv tauj ob sab. n-hom silicon muaj qhov kom zoo dua ntawm kev ua siab dua rau impurities. Txawm li cas los xij, vim tias qhov qis qis dua cov coefficient piv rau p-type silicon, qhov hloov pauv ntawm lub hauv paus tsis kam nce. Ua tsaug rau cov kev ntsuas ib-seem ntawm cov hnub ci hlwb nrog tus nqi thauj khoom-xaiv cov neeg sib cuag, lub hauv paus tsis kam cuam tshuam rau kev ua haujlwm ntawm tes. Nws tau pom rau thawj zaug uas qhov kev ua tau zoo tshaj 25% tuaj yeem ua tiav rau lub hauv paus resistances ntawm 1 thiab 10Ωcm.
Tus nqi thauj khoom-xaiv sib cuag TOPCon (tunnel oxide passivated contact) tsim ntawm Fraunhofer ISE yog raws li ultra-nyias qhov oxide ua ke nrog ib txheej silicon txheej thiab ua kom zoo rau cov khoom thauj tau zoo. Kev siv qhov no TOPCon sab nraub qaum (tus qauv ntawm tes, Daim Duab 1, 20-20 hli2), cov ua tiav kev ntsuas ntawm qhov ua tau zoo ntawm 25.3% (Voc= 718mV, Js= 42.5 mA / cm2, FF=82.8%) tuaj yeem ua tiav ntawm n-hom silicon rau lub hnub ci xov tooj ntawm tes sib txuas hauv ob sab.
Kev ua tau zoo ntawm silicon wafer yog qhov tseem ceeb rau kev tsim cov hnub ci hlwb zoo. Vim tias muaj kev zam ntau dua rau kev ua kom lub cev puas tsuaj zoo li tsis muaj teeb meem vim tsis muaj teeb meem (LID), tam sim no qib siab tshaj plaws ntawm kev ua tau tiav ntawm n-hom silicon (hauv ib txwm siv thiab hauv kev tsim tawm). Txawm li cas los xij, qis qis sib tshooj coefficient ntawm n-hom silicon piv rau p-hom silicon ua rau muaj qhov sib txawv ntau dua ntawm qhov pib tsis kam thaum lub sijhawm siv lead ua. Rau lub hnub ci hlwb nrog cov qauv tsim tom qab (PERC, IBC), tsuas yog silicon wafers nrog qee qhov kev tawm tsam thiab yog li, tsuas yog ib feem ntawm tag nrho cov siv lead ua pas nrig siv tau. Txawm li cas los xij, vim hais tias ntawm ib-seem tam sim no ntws hauv lub hauv paus ntawm TOPCon solar cell, lub hauv paus tsis kam muaj qhov cuam tshuam tseem ceeb rau lub hnub ci cell kev ua tau zoo. Peb tuaj yeem ua pov thawj tias qhov no tseem tuaj yeem muab coj los siv rau hauv cov ntawv thov siv rau qhov siab tshaj plaws ntawm kev ua haujlwm tau zoo. Peb ua tiav kev ua tiav ≥25% rau lub hauv paus tsis kam ntawm 1 txog 10Ωcm. Voltages qhib-Circuit Court (Voc)> 715 mV thiab qhov muab cais (FF)> 81.5% tau tiav rau txhua lub hauv paus resistances.
