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ID:51504997
大小:4.76 MB
页数:94页
时间:2020-03-25
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1、SolarCells:Operatingprinciples,technologyanddevelopmentSpeaker:ZhuZhenYeDate:2010.6HarbinInstituteofTechnologyShenzhenGraduateSchoolOutlineIntroductiononsolarCellPrinciplesofsolarCellTheFirstGenerationSolarCellTheSecondGenerationSolarCellTheThirdGenerationSolar
2、CellTheFourthGenerationSolarCellSomeResearchTopicIntroductiononsolarcellHistoryofsolarcell1839:PhotovoltaiceffectwasfirstrecognizedbyFrenchphysicistAlexandre-EdmondBecquerel.1883:FirstsolarcellwasbuiltbyCharlesFritts,whocoatedthesemiconductorseleniumwithanextre
3、melythinlayerofgoldtoformthejunctions(1%efficient).1946:RussellOhlpatentedthemodernsolarcell1954:Modernageofsolarpowertechnologyarrives-BellLaboratories,experimentingwithsemiconductors,accidentallyfoundthatsilicondopedwithcertainimpuritieswasverysensitivetoligh
4、t.Thesolarcellorphotovoltaiccellfulfillstwofundamentalfunctions:Photogenerationofchargecarriers(electronsandholes)inalight-absorbingmaterial.SeparationofthechargecarrierstoaconductivecontacttotransmitelectricityIntroductiononsolarcellWhataresolarcellsAdeviceco
5、nvertsphotonenergyintoelectricenergyPVlightLoadCurrentSolarcellsinspacecraftIntroductiononsolarcellWhydoweneedsolarcells?Fossilenergysource(oil,coal)arelimitedEnergyCrisis!!!EnvironmentpollutionApplication:spacecraft,portableandmobilsourceofpower,remotearea,pla
6、ceswithoutaccesstoelectricgrid(Africa)......IntroductiononsolarcellIntroductiononsolarcellGreenhouseeffectandpollutionThetrappingofheatintheatmosphere;incomingshort-wavelengthsolarradiationpenetratestheatmosphere,butthelonger-wavelengthoutgoingradiationisabsorb
7、edbygreenhousegasesandreradiatedbacktoEarth,causingariseintemperaturePollutionSmogcitySolution???IntroductiononsolarcellTheworld’spresentsourcesofenergyDifferentsourcesofenergy:futureIntroductiononsolarcellSolarpowerstationincitiesIntroductiononsolarcellSolarpo
8、werstationinremoteareaIntroductiononsolarcellOtherapplicationsofSolarpowerstationIntroductiononsolarcellFromcelltopowerstation(BasicbuildingblockofPV)Cellconnectedinseries–1
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