学科分类
/ 1
11 个结果
  • 简介:Therearedifferentlayoutschemesfor330-500kVswitchyardwithoneandahalfbreakerconfiguration.However,asfarastheUHVswitch-yardsforpowerplantsconcerned,itisobviousthatsomelayoutschemestakeuptoomuchareaandsomeothersarenotcompatiblewiththegenerallayoutofpowerplants.Inordertoovercometheaboveproblems,anewalignedswitchyardlayoutscheme,i.e.,allcircuitbreakersanddisconnectingswitchesarealignedinonerowisdiscussedinthispaper.

  • 标签: Layout scheme ALIGNED in ONE row
  • 简介:Theetchingeffectofammonia(NH3)onthegrowthofverticallyalignednanotubes/nanofibers(CNTs)wasinvestigatedbydirect-currentplasmaenhancedchemicalvapordeposition(DC-PECVD).NH3gasetchesNicatalystlayertoformnanoscaleislandswhileNH3plasmaetchesthedepositedamorphouscarbon.BasedontheetchingeffectofNH3gasonNicatalyst,thedifferencesofgrowingbundlesofCNTsandsinglestrandCNTswerediscussed;specifically,theamountofoptimalNH3gasetchingisdifferentbetweenbundlesofCNTsandsinglestrandCNTs.IncontrasttotheCNTcarpetgrowth,thesinglestrandCNTgrowthrequiresshorteretchingtime(5min)thanlargecatalyticpatterns(10min)sincenanodotsalreadyformcatalystislandsforCNTgrowth.Throughremovingtheplasmapretreatmentprocess,thedamagefrombeingexposedathightemperaturesubstrateoccurringduringtheplasmagenerationtimeisminimized.Highresolutiontransmissionelectronmicroscopy(HTEM)showsfishbonestructureofCNTsgrownbyPECVD.

  • 标签: 碳纳米管 垂直排列 纳米纤维 等离子体增强化学气相沉积 生长 氨气
  • 简介:Thedevicestructureandtechnicalprocessingsofquasi-planarself-alignedsiliconavalancheelectronemissionarrayarcintroduced.Theprocessingstepattheedgeofelectronemissionregionisabout10nmonlyandthewidthofself-alignedcurrentchannelofshallowAsimplantationisabout3μm.ItsI-Vcharacteristicsshowalargerlinearregionandlowerseriesresistancethanthatoftheprevioussiliconavalancheelectronemissiondevices.Someoftheelectronemissioncharacteristicsarealsodiscussedinthispaper.

  • 标签: Vacuum MICROELECTRONICS Electron emission Cold CATHODE
  • 简介:Thecounterelectrode(CE)prominenceindye-sensitizedsolarcells(DSSCs)isundisputedwithresearchgearedtowardsreplacementofPtwithviablesubstituteswithexceptionalconductivityandcatalyticactivity.Herein,wereportthereplaceableCEwithbetterperformancethanthatofPt-basedelectrode.ThechemistrybetweenthegrapheneoxideandicetemplatesleadstocellularformationofreducedgrapheneoxidethatachievesgreaterconductivitytotheCE.Thesimultaneousgrowthofactiveedge-orientedMoS2ontheCEthroughCVDpossesseshighreflectivity.HighreflectiveMoS2trendstoincreasetheelectroactivitybyabsorbingmorephotonsfromthesourcetodyemolecules.Thus,thesynergisticeffectoftwomaterialswasfoundtoshowcasebetterphotovoltaicperformanceof7.6%against7.3%fortraditionalplatinumCE.

  • 标签: DYE-SENSITIZED solar cell GRAPHENE oxide molybdenum