热电材料外文翻译ThermoelectricPropertiesofn-TypeBi2Te3/PbSe0.5Te0.5SegmentedThermoelectricMaterialSEJINYOON,1JUN-YOUNGCHO,1HYUNKOO,1SUNG-HWANBAE,1SEUNGHYUNAHN,1GWIRANGKIM,1JIN-SANGKIM,2andCHANPARK1,3,41.—DepartmentofMaterialsScienceandEngineering,SeoulNationalUniversity,Daehak-dong,Gwanak-gu,Seoul,RepublicofKorea.2.—ElectronicMaterialsResearchCenter,KoreaInstituteofScienceandTechnology,Wolgok2-dong,Seongbuk-gu,Seoul,RepublicofKorea.3.—ResearchInstituteofAdvancedMaterials,SeoulNationalUniversity,Daehak-dong,Gwanak-gu,Seoul,RepublicofKorea.4.—e-mail:pchan@snu.ac.krToinvestigatetheeffectsofsegmentationofthermoelectricmaterialsonperformancelevels,n-typesegmentedBi2Te3/PbSe0.5Te0.5thermoelectricmaterialwasfabricated,anditsoutputpowerwasmeasuredandcomparedwiththoseofBi2Te3andPbSe0.5Te0.5.Thetwomaterialswerebondedbydiffusionbondingwithadiffusionlayerthatwas$18lmthick.Theelectricalconductivity,Seebeckcoef?cient,andpowerfactorofthesegmentedBi2Te3/PbSe0.5Te0.5samplewereclosetotheaverageofthevaluesforBi2Te3andPbSe0.5Te0.5.TheoutputpowerofBi2Te3washigherthanthoseofPbSe0.5Te0.5andthesegmentedsampleforsmallDT(300Kto400Kand300Kto500K),butthatofthesegmentedsamplewashigherthanthoseofBi2Te3andPbSe0.5Te0.5whenDTexceeded300K(300Kto600Kand300Kto700K).Theoutputpowerofthesegmentedsamplewasabout15%and73%higherthanthoseoftheBi2Te3andPbSe0.5Te0.5samples,respectively,whenDTwas400K(300Kto700K).Theef?ciencyofthermoelectricmaterialsforlargetemperaturedifferencescanbeenhancedbysegmentingmaterialswithhighperformanceindifferenttemperatureranges.Keywords:Thermoelectricmaterial,segmentedthermoelectricmaterial,Bi2Te3,Pb(Se,Te),outputpowerINTRODUCTIONManystudieshavefocusedonimprovingtheenergyconversionef?ciencyofthermoelectricmaterialsfortheirpotentialuseinpower-generationandcoolingsystems.Theef?ciencyofathermoelectricmaterialischaracterizedbyitsdimensionless?gureofmerit[zT=(S2rT)/j,whereSistheSeebeckcoef?cient,ristheelectricalconductivity,andjdenotesthethermalconductivity].1Theupperlimitoftheef?ciency(g?gc???????????????1tzTpà1=???????????????1tzTpt1àgchi,wheregc=DT/ThotistheCarnotef?ciency,andzTistheaveragezToverthetemperaturerange)isdeterminedbythetemperaturedifferenceDT,2,3whichmeansthatbetterenergyconversioncanbeexpectedwiththeuseofalargerDT.Mostthermoelectricmaterials,how-ever,havehighzToveraverylimitedtemperaturerange,indicatingthatmostthermoelectricmaterialscannoteffectivelyutilizesuchalargeDT.Highther-moelectricenergyconversionef?ciencycanbeobtainedwhenalargeDTcanbeused,whichcanonlyberealizedbyusingathermoelectricmaterialwithhighzTvalueacrossabroadtemperaturerange.Materialswithlargeav---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---eragezTvaluesoverawidetemperaturerangehavetobeusedtoconvertlargeamountsofenergyfromalargeDT.ConnectionofmaterialswithhighzTvaluesindifferenttempera-tureranges,formingasegmentedthermoelectric(ReceivedMay10,2022;acceptedOctober14,2022;publishedonlineNovember27,2022)JournalofELECTRONICMATERIALS,Vol.43,No.2,2022DOI:10.1017/s11664-013-2869-4ó2022TMS414本文来源：网络收集与整理，如有侵权，请联系作者删除，谢谢！---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---
