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ID:62068178
大小:2.65 MB
页数:22页
时间:2021-04-14
《最新DSSC染料敏化太阳能电池-英文课件ppt.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、DSSC染料敏化太阳能电池-英文TheorySchematicofGraetzelCellTheadsorbeddyemoleculeabsorbsaphotonforminganexcitedstate.[dye*]Theexcitedstateofthedyecanbethoughtofasanelectron-holepair(exciton).TheexciteddyetransfersanelectrontothesemiconductingTiO2(electroninjection).Thissepa
2、ratestheelectron-holepairleavingtheholeonthedye.[dye*+]Theholeisfilledbyanelectronfromaniodideion.[2dye*++3I-2dye+I3-]TheoryProcedure:DepositionofTiO2FilmAligntwoconductiveglassplates,placingoneupsidedownwhiletheonetobecoatedisrightsideupTape1mmwidestripalon
3、gedgesofbothplatesTape4-5mmstripalongtopofplatetobecoatedUniformlyapplyTiO2suspensiontoedgeofplate5microliterspersquarecentimeterDistributeTiO2overplatesurfacewithstirringrodDrycoveredplatefor1minuteincoveredpetridishProcedure:DepositionofTiO2FilmAnnealTiO2fil
4、monconductiveglassTubefurnaceat450oC30minutesAllowconductiveglasstocooltoroomtemperature;willtakeovernightStoreplateforlateruseProcedure:PreparingAnthrocyaninDyeNaturaldyeobtainedfromgreenchlorophyllRedanthocyanindyeCrush5-6blackberries,raspberries,etc.in2mLde
5、ionizedH2Oandfilter(canusepapertowelandsqueezefilter)Procedure:StainingTiO2FilmSoakTiO2platefor10minutesinanthocyanindyeInsurenowhiteTiO2canbeseenoneithersideofglass,ifitis,soakindyeforfivemoreminWashfilminH2OthenethanolorisopropanolWipeawayanyresiduewithakimw
6、ipeProcedure:CarbonCoatingtheCounterElectrodeApplylightcarbonfilmtosecondSnO2coatedglassplateonconductivesideSoftpencillead,graphiterod,orexposuretocandleflameProcedure:AssemblingtheSolarCellPlacetwobinderclipsonlongeredgestoholdplatestogether(DONOTcliptootigh
7、t)Place2-3dropsofiodideelectrolytesolutionatoneedgeofplatesAlternatelyopenandcloseeachsideofsolarcelltodrawelectrolytesolutioninandwetTiO2filmEnsureallofstainedareaiscontactedbyelectrolyteRemoveexcesselectrolytefromexposedareasFastenalligatorclipstoexposedside
8、sofsolarcellProcedure:MeasuringtheElectricalOutputAttachtheblack(-)wiretotheTiO2coatedglassAttachthered(+)wiretothecounterelectrodeMeasureopencircuitvoltageandshortcircuitcurrentwi
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