简介:TheanalysisofsolarcellperformancehasbeendonebysimulatingtheexternalI-Vcharacteristicsofn^+/p/p^+singlecrystalsiliconsolarcellunderhighlightintensityand1.5airmass(AM).Thismethodallowsthemaximizationofsolarcellefficiency.Tofabricatelow-costn^+/p/p^+singlecrystalsiliconsolarcells,solidsourceofdopedphosphorousandboronwasused.
简介:Bao-HitachiMetalRoll(NanTong)Co.,Ltd.onProductionTheconstructioncompletionandproduction-onceremonyofBao-HitachiMetalRoll(NanTong)Co.,Ltd.investedandestablishedbyBaosteelandJapanHitachiMetalwasheldon24thOctober.Bao-HitachiMetalRoll(NanTong)Co.,Ltd.issetbyjointventureofUSD65millioninvestedbyBaosteelandHitachiMetal,theconstructionstartedinSeptemberof2006.TrialproductionstartedonthebasisofcompletionofequipmentcombinedtestinAprilof2006.Theplantaimsatworldwidethinstriphotrollingplantsaspotentialclientsandprovideshighqualityhotrollingmillworkrollsproducedwithcentrifugallycastandstaticcast,etc.Accordingtotheschedule,themonthlyou
简介:图的染色是图论中非常重要的研究课题,图的染色的基本问题即是确定各种染色法的色数.图G的邻点可区别I-全染色是一个新的染色概念,对二幂图P2n的邻点可区别I-全染色问题进行了研究,从其结构特点出发,运用构造法和色调整技术,给出了P2n的邻点可区别I-全染色法,得到了P2n的邻点可区别I-全染色数.
简介:Accordingtothegoodchargetransportingpropertyofperovskite,wedesignandsimulateap–i–n-typeall-perovskitesolarcellbyusingone-dimensionaldevicesimulator.Theperovskitechargetransportinglayersandtheperovskiteabsorberconstitutetheall-perovskitecell.Bymodulatingthecellparameters,suchaslayerthicknessvalues,dopingconcentrationsandenergybandsofn-,i-,andp-typeperovskitelayers,theall-perovskitesolarcellobtainsahighpowerconversionefficiencyof25.84%.Thebandmatchedcellshowsappreciablyimprovedperformancewithwidenabsorptionspectrumandloweredrecombinationrate,soweobtainahighJ_(sc)of32.47mA/cm~2.Thesmallseriesresistanceoftheall-perovskitesolarcellalsobenefitsthehighJ_(sc).Thesimulationprovidesanovelthoughtofdesigningperovskitesolarcellswithsimpleproducingprocess,lowproductioncostandhighefficientstructuretosolvetheenergyproblem.