Txoj Kev Taw Qhia Ntawm Photovoltaic Silver Paste Hloov
Hloov cov nyiaj paste tej zaum yuav yog lub ntsiab lus tseem ceeb ntawm kev txo nqi. Txij li thaum muab tshuaj txhuam nyiaj rau ib qho kev faib ua feem ntau ntawm cov nqi uas tsis yog-silicon ntawm cov roj teeb, txo cov nqi ntawm cov nyiaj paste ib txwm yog qhov tseem ceeb ntawm kev txo nqi ntawm cov roj teeb txuas. Yav dhau los, kev txo nqi yog ua tiav los ntawm ob txoj hauv kev:
(1) Txo qhov dav ntawm daim phiaj zoo
(2) Txhim kho cov kab sib chaws loj. Thaum daim phiaj tseem ceeb yog nce, qhov dav yuav thinner thiab cov nyiaj noj yog txo.
Nyob rau hauv cov nyiaj system, kev txo qis hauv kev siv paste yog txwv, feem ntau vim tias qhov ua tau zoo ntawm cov roj teeb tam sim no siab dua, thiab lub luag haujlwm ntawm cov tshuaj txhuam hniav yog khaws cov tam sim no. Nws yog ib qho nyuaj mus txuas ntxiv txo tus nqi ntawm daim ntawv thov txheeb ze. Yog li ntawd, kev hloov cov nyiaj nrog cov hlau tsis tshua muaj nqi yuav yog qhov tseem ceeb ntawm kev txo nqi.
Aluminium paste tau siv ua ntej, tab sis muaj qee qhov kev sib tw hauv daim ntawv thov loj. Aluminium yog ib hom hlau uas nquag siv hauv kev lag luam thiab tuaj yeem muab tau ntau rau hauv kev tsim hluav taws xob photovoltaic. Nws muaj tus nqi qis thiab tuaj yeem txo cov nqi tsis-silicon ntawm cov cell photovoltaic. High-temperature aluminium paste tau siv ntau xyoo hauv PERC era. Lub resistivity ntawm txhuas yog li ntawm 1.7-1.8 npaug ntawm nyiaj. Txawm hais tias qhov poob ntawm kab tsis kam tuaj yeem raug them los ntawm kev nce cov kab dav, lossis silicon ntxiv rau cov tshuaj txhuam hniav txhawm rau tiv thaiv cov tshuaj tiv thaiv ntawm aluminium paste thiab polysilicon, yog li txo qhov cuam tshuam ntawm kev sib txuas thiab ua kom lub roj teeb qhib qhov hluav taws xob, tseem muaj qee yam. sib txawv nrog nyiaj nyob rau hauv cov nqe lus ntawm resistivity.
Tsis tas li ntawd, aluminium yog qhov nyuaj rau cov duab. Raws li cov kev cai nruj dua ntawm daim phiaj kab nam piv thiab kev tiv thaiv, tseem muaj qee qhov kev sib tw hauv cov ntawv thov loj tom ntej ntawm kev ua haujlwm siab bifacial hlwb.
Copper muab tshuaj yog ua tiav. Qhov sib txawv ntawm qhov sib txawv ntawm tooj liab thiab nyiaj yog me me. Kev lag luam tau ua qee qhov kev nce qib hauv kev siv cov tooj liab muab tshuaj ua ntej.
Xyoo 2020, FuturaSun tau tshaj tawm "ZEBRA" series ntawm N-hom IBC modules rau European tsev neeg photovoltaic thiab kev lag luam thiab kev lag luam, siv tooj liab muab tshuaj txhuam. Copper electrodes muaj kev ua tau zoo hauv kev vuam hluav taws xob thiab kev ruaj ntseg:
a) Nyob rau hauv cov nqe lus ntawm vuam, thaum vuam kub nce mus rau 440 degree, lub tev quab yuam mus txog 0.76N / hli, uas yog ze rau lub tev ntawm lub zog ntawm cov tsoos silver paste busbars;
b) Nyob rau hauv cov nqe lus ntawm hluav taws xob kev ua tau zoo stability, hluav taws xob kev ua tau zoo ntawm tag nrho cov Cheebtsam ua ntej TC600 nyob ruaj khov, qhia zoo thermomechanical stability.
Kev tshawb fawb thiab kev tsim cov tooj liab muab tshuaj yog qhov nyuaj, thiab lwm txoj hauv kev kuj tseem xav kom daws cov teeb meem ntawm kev siv tooj liab muab tshuaj txhuam. Daim ntawv thov ntawm tooj liab muab tshuaj txhuam tsis tsuas yog yuav tsum xav txog qhov txuas txuas ntxiv tab sis kuj yog qhov nyuaj ntawm cov chaw tsim hluav taws xob hauv qab los siv kev koom tes. Rau qhov muab tshuaj txuas nws tus kheej, lub hauv paus ntawm daim ntawv thov ntawm tooj liab muab tshuaj txhuam yog los daws peb qhov teeb meem:
1. Lub Oxidizability ntawm tooj liab:Tooj liab yog ntau zog thiab yooj yim oxidized thaum lub sij hawm kub sintering, thiab kev tiv thaiv oxidation yog ib qho tseem ceeb heev;
2. Diffusion:Silver paste ua ib qho hlau tom qab sintering, thiab tooj liab yog ib qho yooj yim rau diffuse ntawm lub roj teeb ntawm tes thaum lub sij hawm sintering. Copper atoms feem ntau yuav cuam tshuam rau PN kev sib tshuam;
3. Welding stability:ZEBRA Cheebtsam tau ua tiav zoo hauv kev vuam, thiab lub zog tev tawm yog ze rau qib tev ntawm cov tsoos silver paste busbars, tab sis tseem muaj qee qhov sib txawv.
Tsis tas li ntawd, tooj liab muab tshuaj txhuam yuav muaj cov kev daws teeb meem sib txawv ntawm kev xaiv cov khoom siv raw tooj liab hmoov, tom qab ua tiav (xws li kev tiv thaiv oxidation), kev tsim, tshuaj ntxiv, cov ntsiab lus tshwj xeeb sintering, thiab lwm yam, thiab kev lag luam teeb meem yuav tsum tau ua. siab dua.