E ffi cient External Energy Transfer from Mn-Doped Perovskite Nanocrystals - Wang et al. - 2021 - Unknown

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pubs.acs.org/JPCLLetterEfficientExternalEnergyTransferfromMn-DopedPerovskiteNanocrystalsShipingWang,JingLeng,*QiSun,ChunyiZhao,andShengyeJin*CiteThis:J.Phys.Chem.Lett.2021,12,1475−1480ReadOnlineACCESSMetrics&MoreArticleRecommendations*sıSupportingInformationABSTRACT:Dopingwithatransitionmetalisaneffectivewaytotunetheopticalpropertiesofsemiconductornanocrystals(NCs).Theexcitationoftransition-metaldopantsinNCsisthroughaninternalenergytransferfromahostexciton,bywhichtheshort-livedexcitonenergycanbe“stored”atthedopantforasignificantlylongerlifetime.Herein,usingMn-dopedCsPbCl3perovskiteNCsasanexample,wereportthatthelong-livedexcitedstateatMndopantscanbeefficientlyextractedfromtheNCsthroughanexternalenergytransfer(EET)torhodamineB(RhB)moleculesadsorbedontheNCsurface.TheEETprocessleadstoadelayedRhBemission.TheEETrateisfoundtoincreasefrom0.16to1.42ms−1asthenumberofRhBmoleculesadsorbedperNCincreasesfrom1to8.9,leadingtoenergyextractionefficiencyupto71%.ThisworksuggeststhepotentialofMn-dopedperovskiteNCsforapplicationsinphotonenergyconversionandbiologicalimaging.energyatMn2+dopantscanbereadilyrealizedwithoutrganicorinorganicleadhalideperovskite(APbX3,AisOtheorganicorinorganiccationsandX=Cl,Br,I)competingwiththefastexcitonrecombination.Previousnanocrystals(NCs)haveattractedgreatinterestfortheirreportshavefoundthatinMn-dopedZnSNCs,theexcitedpotentialapplicationinlight-emittingdiodes(LEDs),lasing,stateatMndopantscantransfertotheadsorbedorganicdyes1−4throughanefficientexternalenergy-transfer(EET)proc-andsolarcells.Thisclassofnanomaterialsexhibitsmany27,28excellentphotophysicalproperties,suchasbroadabsorptioness.AsimilarEETprocessisalsoexpectedinMn-dopedspectra,tunablebandgapemission,narrowline-width,andperovskiteNCs;however,theenergy-transferrateandhighphotoluminescence(PL)quantumyield(QY).5−7efficiencyremainsunknown.Moreover,dopinghomo-andheterovalentionsintoaHerein,wereportaninvestigationontheEETdynamicsfromexcited-stateMn2+inMn-dopedCsPbClperovskiteNCsperovskitestructuretoformalloysemiconductorsisfoundto3beaneffectivewaytotunetheopticalpropertiesofperovskitetotheadsorbedrhodamineB(RhB)molecules.Weshowthat,8−11throughaFörsterEETprocess,theexcited-stateMn2+energyDownloadedviaUNIVOFCONNECTICUTonMay16,2021at08:51:16(UTC).NCs.Forexample,manyreportshavedemonstratedthesuccessfuldopingofMn2+ionsinCsPbXNCsbyreplacingcanbedirectlytransferredtoRhBwithtransferratesfrom0.163−1thePb2+ionsinthelattice.12−18InsuchMn-dopedperovskiteto1.42ms,varyingwiththenumberofadsorbedRhBSeehttps://pubs.acs.org/sharingguidelinesforoptionsonhowtolegitimatelysharepublishedarticles.NCs,theexcitonenergyintheperovskitehostcantransfertomoleculesperNCparticle.TheenergyextractionyieldisuptoMn2+ionsthroughanefficientandultrafastinternalenergy->71%,indicatingefficientlightharvestingandphotonenergytransfer(IET)process,19−21leadingtothedual-coloremissionutilizationofMn-dopedperovskiteNCsforpotentiallight-frombothhostexcitonsandMn2+dopants.Thisuniqueopticalconversionapplications.CsPbClNCsandMn2+-dopedCsPbClNCswerepropertymakesMn-dopedperovskiteNCsapromising33synthesizedbyusingamodifiedhot-injectionprocedurecandidateforcolor-tunableLEDsandsolarconcentrator618,22,23reportedpreviously.Theexperimentaldetailsaboutmaterialapplications.2+preparationareprovidedintheSupportingInformation.TheItisknownthattheMnemissioninMn-dopedNCs462+as-preparedNCstypicallyexhibitcube-likeshapes(Figures1aoriginatesfromtheT1toA1transitionofMn.Becauseof46andS1)withanaveragesidelengthof∼8nm.Thehigh-theforbiddentransitionofT1toA1,theexcited-statelifetime2+12,24−26atMnisusuallyonamillisecondtimescale,afewordersmagnitudelongerthanthatofhostexcitons(ontheReceived:January4,2021nanosecondtimescale).Thislong-livedexcitedstateofMn2+Accepted:January26,2021makesMn-dopedperovskiteNCsapotentialenergyreservoir,Published:February2,2021wheretheshort-livedexcitonenergycanbe“stored”atMndopantsandexistforasignificantlylongerperiodoftime,andthenthefurtherextractionandutilizationofthe“stored”©2021AmericanChemicalSocietyhttps://dx.doi.org/10.1021/acs.jpclett.1c000171475J.Phys.Chem.Lett.2021,12,1475−1480

1TheJournalofPhysicalChemistryLetterspubs.acs.org/JPCLLetterFigure1.(a)TEMandHRTEM(inset)imagesofMn-dopedCsPbCl3NCs.(b)UV−visabsorptionspectraofundopedandMn-dopedCsPbCl3NCs,Mn-dopedCsPbCl3NC−RhBcomplexes,andRhB−ethanolsolutions.(c)PLspectraofMn-dopedCsPbCl3NCswithandwithoutRhBunderexcitationat360nm,whereonlytheCsPbCl3NCscanbeexcited.ThePLspectrumfromMn-dopedNC−RhBcanbedecomposedintoMn2+andRhBemissions(grayline).ThearrowsindicatethedeceaseofMn2+andemergenceofRhBemissioninthePLspectrumofMn-dopedNC−RhB.(d)ComparisonofPLspectrafromRhB−ethanolsolution(black),undopedCsPbCl3NC−RhBcomplex(red),andMn-dopedCsPbCl3NC−RhBcomplex(blue)withthesameRhBabsorptionintensityunder360nmexcitation,showingthatonlyMn-dopedCsPbCl3NC−RhBexhibitsMn2+andRhBemissionundertheexcitationat360nm.resolutiontransmissionelectronmicroscopy(HRTEM)indicatesthenumberofadsorbedRhBmoleculesperNC(Figure1a,inset)andpowderX-raydiffraction(XRD)(Figureparticleandcanbecontrolledbytheshakingtime.S2)datademonstratethatbothMn-dopedandundopedNCsWefirstcomparethePLspectraofMn-dopedCsPbCl3NCsarehighlycrystalline.TheinductivecoupledplasmamasswithandwithoutadsorbedRhBmoleculesundertheexcitationspectrometry(ICP-MS)measurementshowsthatthedopingat360nm(Figure1c).ComparedtotheundopedNCs(seeratioofMn2+is∼4%relativetoPb2+.FigureS3foritsPLspectrum),Mn-dopedNCsexhibitastrongMn2+dopantemissionat∼600nm.ForNCswithRhBToexaminetheEETprocessfromMn-dopedCsPbCl3NCs,Mn-dopedNCswithRhBmoleculesadsorbedontheNC(Mn-dopedNC−RhB),theirPLspectrumbecomesasym-metricbecauseoftheappearanceofPLpeakonthebluesidesurfacewerepreparedbyaddingRhBpowdertoaMn-dopedofMn2+emission.WeattributedthischangeofspectratotheCsPbCl3NCsolutioninhexane.ThemixturesolutionwasfirstRhBemissionforMn-dopedNC−RhBsamplebyshowingthatshakenfortensofsecondsandthenfiltratedtoremovethethePLofMn-dopedNC−RhBcanbenicelydecomposedintoundissolvedRhB.BecauseRhBisalmostinsolubleinhexane,2+MnandRhBemissionspectra(Figure1c).BecausetheNCsRhBmoleculesdissolvedinthehexanesolutionarebelievedtowithandwithoutRhBarecomparedunderthesameNCbeadsorbedtotheNCs.TheamountofadsorbedRhBconcentration,thespectralchangeinFigure1cbetweenthemoleculescanbecontrolledbythemixingtimeandthe2+twosamplesindicatesadecreaseofMnemissioninamountofRhBaddedtotheNCsolution.Figure1bshowstheconjunctionwithagenerationofRhBemissionaftertheUV−visabsorptionspectraofundopedandMn-dopedNCsadsorptionofRhBmolecules.BecausetheRhBmoleculeisandMn-dopedNC−RhBsolutions.Theslightblueshiftofhardlyexcitedat360nm(Figure1b),thedatainFigure1c∼12nmbetweenthemisduetothechangeoffinelatticesuggestsanEETprocessfromNCtoRhBinMn-dopedNC−2+29,30structureinducedbyMndoping.FortheMn-dopedRhB,thusresultingintheemissionofRhB.TheEETcanNC−RhB,anadditionalabsorptionpeakat560nmistheoccurfromeitherNChostexcitonsortheMn2+dopants.characteristicabsorptionofRhBmolecules,whoseintensityHowever,energytransferfromexcitontoRhBisprincipally1476https://dx.doi.org/10.1021/acs.jpclett.1c00017J.Phys.Chem.Lett.2021,12,1475−1480

2TheJournalofPhysicalChemistryLetterspubs.acs.org/JPCLLetterinefficientbecauseofthelackofspectraloverlapbetweenhostworksfoundthattheIETprocesskIEToccurredonthenstopsexcitonemission(at400nm)andRhBabsorption(Figure1b).timescalethroughatrap-mediatedtransfermecha-20,24,35,36WethenfurthercomparethePLspectra(Figure1d)ofMn-nism.AftertheadsorptionofRhBmolecules,thedopedNC−RhB,undopedNC−RhB,andRhB−ethanolenergytransferfromMndopantstoadsorbedRhBmoleculessolutionwiththesameamountofRhBconcentration(seecanresultinafasterPLdecayofMndopantsandmeanwhileFigureS4fortheirabsorptionspectra).TheresultshowsthatthegenerationofRhBPLwithanintrinsicdecayrateofkRhB.undertheexcitationat360nmthePLintensityofRhBfromTheEETshouldoccuronthesametimescaleastheintrinsicexcitedMn2+lifetime,andthemeasuredEETrate(k)undopedNC−RhBandRhB−ethanolsolutionarenegligibleEETrelativetothatfromMn-dopedNC−RhB,verifyingthatthedependsonthenumberofadsorbedRhBmolecules(n)peremissionofRhBinMn-dopedNC−RhBisaresultofEETNC(kEET=nk′EET;k′EETistheratewhenn=1).InthecasefromexcitedMn2+,ratherthanfromthedirectexcitationofthattheinternalexciton-to-dopantenergy-transferrate(kIET)RhBortheenergytransferfromthehostexciton.WealsoismuchlargerthanthedecayrateofexcitedMndopant(kMn+k),thedecaykineticsoftheexcited-stateMn2+andRhBcanexcludedtheenergytransferfromMn2+tothetripletstateofEETbederivedas(seetheSupportingInformationfordetailedRhB.ForRhBmolecules,theenergylevelofthesingletstateis31derivation).higherthanthetripletstateby∼370meV.ThismeansthatiftheEETistothetripletstateofRhB,themoleculecannot[Mn(t)*]=[Mn*]e−+()kktEETMn0(1)transfertothesingletstateatroomtemperature,andthus,nosingletRhBPLshouldbeobserved.[RhB()*]t=kEET[*Mn]0(e−+()kktEETMn−e−ktRhB)TheEETkineticsinMn-dopedNC−RhBcanbekkk−−RhBEETMninvestigatedbythemeasurementoftime-resolvedPL(2)(TRPL)kineticsinMn-dopedNCsbeforeandaftertheRhB2+where[Mn*]([RhB*])isthedensityofexcitedMndopantsadsorption.TheschematicdiagraminFigure2ashowsthe(RhBmolecules)atadelaytimet,and[Mn*]0isthedensityofexcitondecayandtransferprocessesinMn-dopedNC−RhB.2+excitedMnrightafterthefastIETprocess.TheRhBPLTheIETprocessfromhostexcitontoMndopantshasbeen19,20,32−34lifetime(1/kRhB)ismeasuredtobe∼1.1ns(FigureS5),whichextensivelystudiedpreviously,andourandothers’meansthatkRhB≫(kEET+kMn).Equation2canthereforebesimplifiedas[*RhB()]≈tkEET[*Mn]0e−+()kktEETMnkkkRhB−−EETMnkEET≈[*Mn()]tkRhB(3)Equation3indicatesthatinMn-dopedNC−RhB,theexcited-stateRhBandMn2+dopantshouldexhibitsimilardecaykinetics.ThisisbecausethatforRhBmoleculesadsorbedonNC,theiremissionislimitedbytheexcitationthroughEET.Figure2bshowsasetofTRPLplotsfromMn-dopedNC−RhBcollectedatvariousemissionwavelengthsfrom550to670nm.BecauseoftheEETfromMndopanttoRhB,thesekineticsareallfaster(∼0.66ms)thanthatfromMn-dopedperovskiteNCswithoutRhB(∼1.72ms).Consistentwitheq3,theTRPLplotscollectedatdifferentwavelengthsfromMn-dopedNC−RhBshowverysimilardecaykinetics,althoughtheexaminedspectralregioncontainsvariablecontributionsfrombothMndopantsandadsorbedRhBmolecules.ThemeasuredEETrateinMn-dopedNC−RhBcanbetunedbychangingthenumber(n)ofadsorbedRhBmoleculesperNC(kEET=nk′EET).Figure3ashowstheabsorptionspectraoffiveMn-dopedNC−RhBsamples(nos.1−5)withdifferentamountofRhBmolecules.BycomparingtheabsorptionintensityofNCandRhB,theaveragenumberofadsorbedRhBperNCforthesesamplesisfoundtoincreasefromn=1.0ton=8.9forsample1to5(seetheSupportingInformationforthecalculationofn).TheirPLspectra(normalizedat405nm)exhibitaclearblue-shiftwiththeincreaseofRhBadsorption(Figure3b),whichisattributedtoFigure2.(a)Schematicdiagramofenergy-transferprocessinMn-theenhanced(reduced)RhB(Mndopant)emissionbecausedopedCsPbCl3NC−RhBsample.kIETandkEETaretheinternalandofthefasterEET.externalenergy-transferrates,respectively;khost,kMn,andkRhBaretheintrinsicdecayratesofhostexciton,excited-stateMn2+,andRhB.(b)ToquantifytheEETratesandtheenergy-transferComparisonofthePLdecaykineticscollectedatdifferentefficiencies(η),wecomparedthePLdecaykineticsoftheexcitedMn2+dopantsfromMn-dopedNC−RhBsampleswithwavelengthsinMn-dopedNC−RhBandthePLdecaykineticsprobedat600nminMn-dopedNCswithoutRhB.differentamountofadsorbedRhBmolecules(Figure3c).1477https://dx.doi.org/10.1021/acs.jpclett.1c00017J.Phys.Chem.Lett.2021,12,1475−1480

3TheJournalofPhysicalChemistryLetterspubs.acs.org/JPCLLetterFigure3.(a)UV−visabsorptionand(b)PLspectraoffivesets(nos.1−5)ofMn-dopedCsPbCl3NC−RhBsampleswithdifferentamountsofadsorbedRhBmolecules.TheexcitationforPLisat360nm.Thenumbersinparenthesesrepresenttheaveragenumber(nRhB)ofadsorbedRhBperNCintheirsamples.(c)ComparisonofPLdecaykineticscollectedat600nminsamples1−5andthePLdecayinMn-dopedNCswithoutRhB.Solidlinesaresingle-exponentialfitstothesekinetics.(d)CalculatedEETratesandenergy-transferefficienciesasafunctionofnRhB.ThesekineticsexhibitacceleratedrelaxationofexcitedMnTheaboveresultshowsthattheintrinsicEETrate(fornRhBdopantbecauseofthefasterEETprocessasthenumberof=1)fromMndopanttoRhBissignificantlysmallerthantheadsorbedRhBincreases.ThesekineticsarefittedbyanenergytransferdirectlyfromexcitontomolecularacceptorasexponentialfunctiontodeterminetheMn-dopantlifetimereportedinothersemiconductorNCs(e.g.,inII−VI(τMn−RhB=1/(kMn+kEET))aftertheadsorptionofRhB(TablesemiconductorandhalideperovskiteNC−organicdyeS1).ThekEETandηvaluescanthenbecalculatedbycomplexes,withanEETtimeonthepicosecondto37−4111nanosecondtimescale).ThisisbecauseoftheweakkEET=−transitiondipolemomentofMndopantthatleadstoaweakττMnRhB−Mn(4)dipole−dipolecouplingbetweendonorandacceptor.TheEETkτtimeonthemillisecondtimescaleinMn-dopedperovskiteη=EET=−1MnRhB−27NCsisconsistentwiththatfoundinMn-dopedZnSNCskkEET+MnτMn(5)andLa-dopedNCs42,43withorganicdyesasacceptors,andawhereτ(=1/k)isthelifetimeofexcitedMn2+withoutsimilarEETprocessshouldalsooccurinothertransition-MnMnRhB.GivenτMn=1.72ms,thekEET(η)isfoundtobe0.08metal-dopedperovskiteNCs.Nevertheless,anefficientEETms−1(12%)forn=1andincreasesto1.42ms−1(71%)forn=canberealizedbyincreasingthenumberofmolecular8.9(seeTableS1).Figure3dplotsthemeasuredkEETandηacceptors,anda71%efficiencyrepresentsaneffectiveenergyvaluesasafunctionoftheaveragenumber(nRhB)ofadsorbedextractionfromMn-dopedNCs,suggestingtheirpotentialRhBperNC.ItisfoundthatthemeasuredEETrateincreasesapplicationsforphotonenergyconversion.linearlywiththeincreaseofnRhB,andfromtheslopeoftheplotAnotherinterestingobservationinthisworkistheslowPLtheintrinsicEETrate(fornRhB=1)forMn-dopedNC−RhBdecayofRhBmoleculesadsorbedonMn-dopedNCs.Thisisdeterminedtobe∼0.16ms−1.BecausetheFörsterenergyresultprovidesamethodtogeneratePLsignalsfromadyetransferishighlydependentonthedonor−acceptordistance,moleculewithanapparentlifetimeafewordersofmagnitudethemeasuredintrinsicEETratecanbetunedbythesizeofthelongerthanitsintrinsicvalue.ThispropertylikelymakesMn-perovskiteNCsandcanbefurtherimprovedbydecreasingthedopedNCs−RhB(ortransition-metal-dopedNCswithotherNCsize.dyemolecules)apotentialcandidatefordelayedfluorescence1478https://dx.doi.org/10.1021/acs.jpclett.1c00017J.Phys.Chem.Lett.2021,12,1475−1480

4TheJournalofPhysicalChemistryLetterspubs.acs.org/JPCLLetterbiologicalimagingwithoutusingadyemoleculewithhttps://pubs.acs.org/10.1021/acs.jpclett.1c00017intrinsicallylongPLlifetimes.Insummary,wehaveinvestigatedtheexternalenergyNotesextractionprocessfromMn-dopedCsPbCl3perovskiteNCstoTheauthorsdeclarenocompetingfinancialinterest.adsorbedRhBmolecules.TheEETprocessisconfirmedtobefromtheexcited-stateMn2+inMn-dopedNCstotheadsorbed■ACKNOWLEDGMENTSRhBmoleculesbytheobservationofRhBemissionundertheS.J.acknowledgesfinancialsupportfromtheMOSTexcitationofonlyMn-dopedNCs.BecausetheEETprocessis(2018YFA0208704and2016YFA0200602)andtheNationalmuchslowerthantheintrinsicPLdecayofRhB,theadsorbedNatureScienceFoundationofChina(21725305).J.L.RhBmoleculesonMn-dopedNCsexhibitadelayedPLacknowledgesfinancialsupportfromtheNationalNaturallifetimeonthemillisecondtimescale.TheEETratecanbeScienceFoundationofChina(21773237and22073098).tunedfrom0.16to1.42ms−1asthenumberofRhBmoleculesadsorbedperNCincreasesfrom1to8.9,andthemaximum■REFERENCESEETratecorrespondstoenergyextractionefficiencyof∼71%.(1)Pan,J.;Quan,L.N.;Zhao,Y.;Peng,W.;Murali,B.;Sarmah,S.ThesefindingsshedlightontheenergyextractionkineticsP.;Yuan,M.;Sinatra,L.;Alyami,N.M.;Liu,J.;Yassitepe,E.;Yang,fromMn-dopedNCstoexternaldyemoleculesandsuggestZ.;Voznyy,O.;Comin,R.;Hedhili,M.N.;Mohammed,O.F.;Lu,Z.thepotentialofthisclassofmaterialsforapplicationsinlight-H.;Kim,D.H.;Sargent,E.H.;Bakr,O.M.HighlyEfficientconversionandbiologicalimaging.Perovskite-Quantum-DotLight-EmittingDiodesbySurfaceEngineer-ing.Adv.Mater.2016,28,8718−8725.■(2)Yakunin,S.;Protesescu,L.;Krieg,F.;Bodnarchuk,M.I.;ASSOCIATEDCONTENTNedelcu,G.;Humer,M.;DeLuca,G.;Fiebig,M.;Heiss,W.;*sıSupportingInformationKovalenko,M.V.Low-ThresholdAmplifiedSpontaneousEmissionTheSupportingInformationisavailablefreeofchargeatandLasingfromColloidalNanocrystalsofCaesiumLeadHalidehttps://pubs.acs.org/doi/10.1021/acs.jpclett.1c00017.Perovskites.Nat.Commun.2015,6,8056.(3)Akkerman,Q.A.;Gandini,M.;DiStasio,F.;Rastogi,P.;FiguresS1−S7,TablesS1andS2,samplepreparations,Palazon,F.;Bertoni,G.;Ball,J.M.;Prato,M.;Petrozza,A.;Manna,L.EETkineticmodel,andestimationoftheaverageStronglyEmissivePerovskiteNanocrystalInksforHigh-VoltageSolarnumberofadsorbedRhBperNC(PDF)Cells.Nat.Energy2017,2,16194.(4)Liu,P.;Chen,W.;Wang,W.;Xu,B.;Wu,D.;Hao,J.;Cao,W.;■Fang,F.;Li,Y.;Zeng,Y.;Pan,R.;Chen,S.;Cao,W.;Sun,X.W.;AUTHORINFORMATIONWang,K.Halide-RichSynthesizedCesiumLeadBromidePerovskiteCorrespondingAuthorsNanocrystalsforLight-EmittingDiodeswithImprovedPerformance.ShengyeJin−StateKeyLaboratoryofMolecularReactionChem.Mater.2017,29,5168−5173.DynamicsandDynamicsResearchCenterforEnergyand(5)deWeerd,C.;Gomez,L.;Capretti,A.;Lebrun,D.M.;EnvironmentalMaterials,DalianInstituteofChemicalMatsubara,E.;Lin,J.;Ashida,M.;Spoor,F.C.M.;Siebbeles,L.D.A.;Physics,ChineseAcademyofSciences,Dalian116023,Houtepen,A.J.;Suenaga,K.;Fujiwara,Y.;Gregorkiewicz,T.EfficientChina;orcid.org/0000-0003-2001-2212;Email:sjin@CarrierMultiplicationinCsPbI3PerovskiteNanocrystals.Nat.dicp.ac.cnCommun.2018,9,4199.JingLeng−StateKeyLaboratoryofMolecularReaction(6)Protesescu,L.;Yakunin,S.;Bodnarchuk,M.I.;Krieg,F.;DynamicsandDynamicsResearchCenterforEnergyandCaputo,R.;Hendon,C.H.;Yang,R.X.;Walsh,A.;Kovalenko,M.V.NanocrystalsofCesiumLeadHalidePerovskites(CsPbX3,X=Cl,Br,EnvironmentalMaterials,DalianInstituteofChemicalandI):NovelOptoelectronicMaterialsShowingBrightEmissionwithPhysics,ChineseAcademyofSciences,Dalian116023,WideColorGamut.NanoLett.2015,15,3692−3696.China;orcid.org/0000-0002-8454-4835;Email:ljjx@(7)Liu,F.;Zhang,Y.;Ding,C.;Kobayashi,S.;Izuishi,T.;Nakazawa,dicp.ac.cnN.;Toyoda,T.;Ohta,T.;Hayase,S.;Minemoto,T.;Yoshino,K.;Dai,S.;Shen,Q.HighlyLuminescentPhase-StableCsPbI3PerovskiteAuthorsQuantumDotsAchievingNear100%AbsolutePhotoluminescenceShipingWang−StateKeyLaboratoryofMolecularReactionQuantumYield.ACSNano2017,11,10373−10383.DynamicsandDynamicsResearchCenterforEnergyand(8)Yao,J.S.;Ge,J.;Han,B.N.;Wang,K.H.;Yao,H.B.;Yu,H.L.;EnvironmentalMaterials,DalianInstituteofChemicalLi,J.H.;Zhu,B.S.;Song,J.Z.;Chen,C.;Zhang,Q.;Zeng,H.B.;Luo,Y.;Yu,S.H.Ce3+-DopingtoModulatePhotoluminescencePhysics,ChineseAcademyofSciences,Dalian116023,China;UniversityofChineseAcademyofSciences,BeijingKineticsforEfficientCsPbBr3NanocrystalsBasedLight-Emitting100049,ChinaDiodes.J.Am.Chem.Soc.2018,140,3626−3634.QiSun−StateKeyLaboratoryofMolecularReaction(9)Shao,H.;Bai,X.;Cui,H.;Pan,G.;Jing,P.;Qu,S.;Zhu,J.;Zhai,Y.;Dong,B.;Song,H.WhiteLightEmissioninBi3+/Mn2+IonCo-DynamicsandDynamicsResearchCenterforEnergyandDopedCsPbCl3PerovskiteNanocrystals.Nanoscale2018,10,1023−EnvironmentalMaterials,DalianInstituteofChemical1029.Physics,ChineseAcademyofSciences,Dalian116023,(10)Yong,Z.J.;Guo,S.Q.;Ma,J.P.;Zhang,J.Y.;Li,Z.Y.;Chen,China;UniversityofChineseAcademyofSciences,BeijingY.M.;Zhang,B.B.;Zhou,Y.;Shu,J.;Gu,J.L.;Zheng,L.R.;Bakr,O.100049,China;orcid.org/0000-0002-7092-0705M.;Sun,H.T.Doping-EnhancedShort-RangeOrderofPerovskiteChunyiZhao−StateKeyLaboratoryofMolecularReaction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