Nyob rau hauv ib puas xyoo - evolving toj roob hauv pes ntawm lub zog tauj dua tshiab, photovoltaic (PV) hlwb sawv ua lub hauv paus pob zeb thev naus laus zis rau kev siv lub hnub ci zog. Kev ua tau zoo thiab kev ua neej nyob ntawm PV hlwb yog qhov tseem ceeb uas txiav txim siab lub sijhawm ntev - kev muaj peev xwm thiab tus nqi - kev ua tau zoo ntawm lub hnub ci zog. Ntawm ntau yam ntaub ntawv uas ua lub luag haujlwm hauv PV cell technology, cov khoom siv graphite tau tshwm sim los ua ib qho tseem ceeb. Raws li tus xa khoom ntawm cov khoom siv graphite rau PV, kuv zoo - muab tso los tshawb xyuas seb cov khoom siv graphite cuam tshuam li cas rau lub neej ntawm PV hlwb.
Lub luag haujlwm ntawm Graphite hauv PV Cells
Graphite yog ib daim ntawv ntawm cov pa roj carbon uas muaj lub cev thiab tshuaj lom neeg. Nyob rau hauv cov ntsiab lus ntawm PV hlwb, graphite yog siv nyob rau hauv ob peb yam tseem ceeb. Piv txwv li, PECVD Graphite Nkoj yog ib qho cuab yeej tseem ceeb hauv Plasma - Cov txheej txheem Txhim Kho Tshuaj Vapor Deposition (PECVD), uas yog siv los tso cov yeeb yaj kiab nyias ntawm PV hlwb. Cov yeeb yaj kiab nyias no tuaj yeem txhim kho kev tiv thaiv - kev xav thiab kev ua haujlwm ntawm lub hlwb, txhim kho lawv cov txiaj ntsig.
Lwm daim ntawv thov tseem ceeb yog Graphite Bipolar Plate. Hauv qee hom PV cell, tshwj xeeb tshaj yog nyob rau hauv roj - cell - kev sib xyaw PV systems los yog hauv cov qauv PV module tsim, cov phaj bipolar yog siv los sau thiab faib hluav taws xob tam sim no. Graphite bipolar daim hlau muaj cov khoom siv hluav taws xob zoo heev, tshuaj lom neeg ruaj khov, thiab lub zog txhua yam, ua rau lawv zoo tagnrho rau lub hom phiaj no.
Graphite Cheebtsam kuj tau siv dav hauv PV tsim khoom. Cov khoom no tuaj yeem suav nrog cov tuav, cov khoom siv hluav taws xob, thiab lwm yam uas tseem ceeb heev rau kev tswj xyuas cov txheej txheem tsim khoom. Lub siab thermal conductivity thiab qis coefficient ntawm thermal expansion ntawm graphite ua rau nws tsim nyog rau kev siv qhov twg qhov kub thiab txias stability yog qhov tseem ceeb.
Kev cuam tshuam rau Lifespan los ntawm Material Stability
Ib qho tseem ceeb ntawm cov khoom siv graphite cuam tshuam rau lub neej ntawm PV hlwb yog los ntawm nws cov tshuaj lom neeg thiab thermal stability. PV hlwb raug rau ntau yam ntawm ib puag ncig, nrog rau qhov kub thiab txias, av noo, thiab UV hluav taws xob. Graphite tsis kam rau tshuaj corrosion thiab oxidation kom ntseeg tau tias cov khoom tsim los ntawm nws tuaj yeem tiv taus cov xwm txheej hnyav rau lub sijhawm ntev.
Piv txwv li, nyob rau hauv cov ntaub ntawv ntawm PECVD graphite nkoj, lawv tau rov raug rau siab - lub zog ntshav plasma thiab ntau yam tshuaj precursors thaum lub nyias - zaj duab xis deposition txheej txheem. Lub siab - cov khoom graphite zoo tuaj yeem tiv thaiv cov tshuaj tua kab mob los ntawm cov neeg ua ntej thiab tuav nws cov qauv kev ncaj ncees. Qhov no txhais tau hais tias lub nkoj graphite tuaj yeem siv rau ntau qhov kev tso nyiaj ntau yam tsis muaj kev puas tsuaj loj, txo qhov zaus ntawm kev hloov pauv thiab txo qhov muaj peev xwm ntawm kev sib kis ntawm PV hlwb thaum lub sijhawm tsim khoom.
Ib yam li ntawd, graphite bipolar daim hlau yuav tsum tau ruaj khov nyob rau hauv lub xub ntiag ntawm electrolytes thiab lwm yam tshuaj nyob rau hauv lub PV system. Lawv cov tshuaj ruaj khov tiv thaiv kev tsim cov khoom siv corrosion uas tuaj yeem txo cov hluav taws xob conductivity ntawm daim hlau thiab ua rau kev ua haujlwm tsis zoo nyob rau lub sijhawm. Los ntawm kev tswj hwm lawv cov kev coj ua thiab kev ncaj ncees, graphite bipolar daim hlau ua rau lub sijhawm ntev - kev ua haujlwm ntawm PV hlwb.
Influence ntawm Manufacturing Quality
Qhov zoo ntawm cov txheej txheem tsim khoom muaj qhov cuam tshuam ncaj qha rau lub neej ntawm PV hlwb. Graphite Cheebtsam ua lub luag haujlwm tseem ceeb hauv kev ua kom qhov tseeb thiab sib xws ntawm cov txheej txheem tsim khoom.
Hauv cov txheej txheem PECVD, qhov sib xws ntawm nyias - zaj duab xis tso tawm yog qhov tseem ceeb rau kev ua haujlwm ntawm PV hlwb. Lub qhov dej - tsim thiab siab - zoo PECVD Graphite Nkoj tuaj yeem muab lub platform ruaj khov thiab zoo ib yam rau cov wafers thaum lub sijhawm tso nyiaj. Qhov no yuav pab kom ntseeg tau tias cov yeeb yaj kiab nyias tau muab tso rau ib leeg, nrog cov tuab tuab thiab cov khoom siv thoob plaws tag nrho cov nplaim ntawm PV hlwb. Ib qho kev tsis sib xws hauv qhov nyias nyias - zaj duab xis tso tawm tuaj yeem ua rau muaj kev hloov pauv hauv zos hauv kev ua haujlwm ntawm tes, uas tuaj yeem ua kom qeeb degradation dhau sijhawm.
Graphite Cheebtsam hauv cov cuab yeej tsim khoom kuj tseem ua rau tag nrho qhov tseeb ntawm cov txheej txheem. Piv txwv li, graphite electrodes tuaj yeem siv los tsim thiab tswj cov ntshav hauv PECVD chamber. Lawv cov thermal conductivity zoo tso cai rau kom muaj cua sov kom zoo, tiv thaiv overheating thiab ua kom cov ntshav plasma ruaj khov. Qhov no, nyob rau hauv lem, ua rau kom muaj kev sib raug zoo thiab txhim khu kev qha cov txiaj ntsig kev tsim khoom, uas muaj txiaj ntsig zoo rau lub sijhawm ntev - kev ua tau zoo thiab lub neej ntawm PV hlwb.
Thermal Management thiab Lifespan
Kev tswj cua sov yog ib qho tseem ceeb ntawm PV cell kev ua tau zoo thiab kev ua neej nyob. PV hlwb tuaj yeem tsim kom muaj cua sov ntau thaum lub sijhawm ua haujlwm, tshwj xeeb tshaj yog nyob rau hauv siab - siv hnub ci. Cov cua kub ntau dhau tuaj yeem ua rau muaj ntau yam teeb meem, suav nrog cov nqi sib txuas ntxiv, txo qis qhib- qhov hluav taws xob hauv hluav taws xob, thiab cov khoom ua kom nrawm dua.
Graphite lub siab thermal conductivity ua rau nws yog ib qho khoom siv zoo heev rau kev tswj xyuas thermal hauv PV systems. Graphite bipolar daim hlau tuaj yeem ua raws li cov dab dej kub, dissipating cov cua sov uas tsim los ntawm PV hlwb thiab pab tswj kom muaj qhov kub thiab txias. Los ntawm kev txo qhov kub ntawm PV hlwb, graphite bipolar daim hlau tuaj yeem ua rau qeeb cov txheej txheem degradation cuam tshuam nrog qhov kub siab, xws li degradation ntawm cov khoom siv semiconductor thiab kev laus ntawm cov ntaub ntawv encapsulation.
Tsis tas li ntawd, cov khoom siv graphite hauv kev tsim khoom kuj tuaj yeem pab nrog kev tswj xyuas thermal. Piv txwv li, cov tuav graphite siv los tuav cov PV wafers thaum lub sijhawm ua haujlwm tuaj yeem ua kom sov tawm ntawm cov wafers, tiv thaiv thermal puas thiab xyuas kom meej tias cov wafers tau ua tiav raws li qhov kub thiab txias.
Hluav taws xob conductivity thiab Lifespan
Hluav taws xob conductivity yog lwm yam khoom tseem ceeb ntawm graphite uas cuam tshuam rau lub neej ntawm PV hlwb. Hauv PV systems, kev sau tau zoo thiab hloov hluav taws xob tam sim no yog qhov tseem ceeb rau kev ua haujlwm zoo.
Graphite bipolar daim hlau muaj cov hluav taws xob hluav taws xob siab, uas tso cai rau lawv khaws thiab faib cov hluav taws xob tam sim no los ntawm PV hlwb nrog tsawg kawg nkaus. Qhov no txo cov hluav taws xob poob hauv lub cev thiab ua kom ntseeg tau tias PV hlwb tuaj yeem ua haujlwm ntawm lawv qhov kev ua tau zoo tshaj plaws. Sij hawm dhau mus, qhov qis - tiv thaiv hluav taws xob sib txuas tuaj yeem tiv thaiv kev tsim ntawm cov chaw kub thiab lwm yam teeb meem hluav taws xob uas tuaj yeem ua rau tsis ua tiav ntxov ntawm PV hlwb.
Ib yam li ntawd, graphite Cheebtsam siv nyob rau hauv cov hluav taws xob tiv tauj thiab kev sib txuas ntawm PV hlwb kuj tuaj yeem pab txhawb rau tag nrho cov hluav taws xob ua haujlwm ntawm lub cev. Lawv cov conductivity siab ua kom ruaj khov thiab txhim khu kev qha hluav taws xob sib txuas, uas yog qhov tseem ceeb rau kev ua haujlwm ntev - ntawm PV hlwb.
Xaus
Hauv kev xaus, cov khoom siv graphite muaj qhov cuam tshuam loj heev rau lub neej ntawm PV hlwb los ntawm ntau yam txheej txheem. Nws cov tshuaj thiab thermal stability xyuas kom meej tias cov khoom tsim los ntawm nws tuaj yeem tiv taus ib puag ncig hnyav thiab rov siv dua hauv cov txheej txheem tsim khoom. Kev cuam tshuam ntawm kev tsim khoom zoo pab tsim PV hlwb nrog kev ua haujlwm zoo ib yam thiab tsawg dua qhov tsis xws luag. Graphite qhov zoo tshaj plaws thermal conductivity thiab hluav taws xob conductivity ua rau muaj kev tswj xyuas thermal thiab kev ua haujlwm ntawm hluav taws xob, raws li, uas yog qhov tseem ceeb rau kev ua haujlwm ntev - ntawm PV hlwb.
Raws li ib tug neeg muab khoom graphite rau PV, kuv nkag siab qhov tseem ceeb ntawm kev muab siab - cov khoom graphite zoo rau PV kev lag luam. Peb cov khoom, xws li PECVD Graphite Boat, Graphite Bipolar Plate, thiab Graphite Cheebtsam, yog tsim los ua kom tau raws li cov kev cai nruj ntawm PV manufacturing txheej txheem thiab txhim khu kev ua tau zoo thiab lifespan ntawm PV hlwb.
Yog tias koj txaus siab kawm ntxiv txog peb cov ntaub ntawv graphite rau PV lossis xav sib tham txog cov sijhawm yuav khoom, thov koj xav tiv tauj peb. Peb tau cog lus los muab cov kev daws teeb meem zoo tshaj plaws rau koj PV kev tsim khoom xav tau.
Cov ntaub ntawv
"Phau ntawv ntawm Photovoltaic Science thiab Engineering", kho los ntawm Antonio Luque thiab Steven Hegedus.
"Carbon Materials in Electrochemical Energy Storage and conversion", luam tawm los ntawm Royal Society of Chemistry.
Cov ntaub ntawv tshawb fawb txog kev siv graphite hauv PV cell manufacturing los ntawm cov ntaub ntawv tshawb fawb xws li "Solar Energy Materials and Solar Cells".