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简介：Inrecentyearsperovskitesolarcellshaveattractedanincreasingscientificandtechnologicalinterestinthescientificcommunity.Itisimportanttoknowthatthetemperatureisoneofthefactorswhichhaveastrongeffectontheefficiencyofperovskitesolarcell.ThisstudycommunicatesatemperatureanalysisonthephotovoltaicparametersofCH_3NH_3PbI_3-basedperovskitesolarcellinabroadintervalfrom80to360K.Strongtemperature-dependentphotovoltaiceffectshavebeenobservedinthetypeofsolarcell,whichcouldbemainlyattributedtoCH_3NH_3PbI_3,showingaferroelectric-paraelectricphasetransitionatlowtemperature(T<160K).Anincreaseintemperatureovertheroomtemperaturedecreasedtheperovskitesolarcellperformanceandreduceditsefficiencyfrom16%to9%.Theinvestigationwithelectronicimpedancespectroscopyrevealsthatatlowtemperature(T<120K)thechargetransportlayerlimitsthedeviceperformance,whileathightemperature(T>200K),theinterfacialchargerecombinationbecomesthedominantfactor.

简介：Thisarticlebringsupsomeexplanationsandclarificationsabouttwicedepositionofleadiodidewritteninthepreviousarticle[1],afterlookingintothetwicedepositionofleadiodideandcarryingontheimprovingbyalayerofPbBr2insteadofPbI2,theshortcircuitcurrentdensity(Jsc)hasdecreased,allowingtoexplainthetwicedepositionis,infact,onedeposition.Theabsorbanceofperovskitewillbediscussed.Thesubstratetemperatureisthemostimportantparameterbecauseitcanimprovetheefficiencyoftheperovskitesolarcells,thesubstratetemperatureshouldbeabout100°Catthedepositionofleadiodide,andwhenthedepositionofmethylammoniumiodideisdonewhenthesubstrateisstillhot,theefficiencyisalsoimproved.Thetemperatureduringthepreparationislessimportantthanthehumidity,butthepreparationinthegloveboxallowsthattheenvironmentalconditionsbecontrolled.

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简介：Thispaperreportsthedopingeffectofcholestericliquidcrystal3β-Hydroxy-5-cholestene3-oleateonpolymersolarcellscomposedofthepoly3-hexylthiopheneandthefullerenederivative.Withadopingratioof0.3wt%,thedeviceachievesanidealimprovementontheshuntresistorandthefillfactor.Comparedwiththereferencecell,thepowerconversionefficiencyofthedopedcellisimproved24%.Thephotoelectricmeasurementandtheactivelayercharacterizationindicatethattheself-assemblyliquidcrystalcanimprovethefilmcrystallizationandreducethemembranedefect.

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简介：TheeffortonelectrochemicalreductionofCO2tousefulchemicalsusingtherenewableenergytodrivetheprocessisgrowingfastrecently.Inthisreview,weintroducetherecentprogressesontheelectrochemicalreductionofCO2insolidoxideelectrolysiscells（SOECs）.Athightemperature,onlyCOisproducedwithhighcurrentdensitiesandFaradicefficiencywhilethereactoriscomplicatedandabettersealingtechniqueisurgentlyneeded.Thetypicalelectrolytessuchaszirconia-basedoxides,ceria-basedoxidesandlanthanumgallates-basedoxides,anodesandcathodesareintroducedinthisreview,andthecathodematerials,suchasconventionalmetal–ceramics（cermets）,mixedionicandelectronicconductors（MIECs）arediscussedindetail.Inthefuture,togainmorevalue-addedproducts,theelectrolyte,cathodeandanodematerialsshouldbedevelopedtoallowSOECstobeoperatedattemperaturerangeof573–873K.Atthosetemperatures,SOECsmaycombinetheadvantagesofthelowtemperaturesystemandthehightemperaturesystemtoproducevariousproductswithhighcurrentdensities.

简介：Mixedionic-electronicconductorsinthefamilyofLaxSr1-xCoyFe1-yO3-δhavebeenwidelystudiedascathodematerialsforsolidoxidefuelcells(SOFCs).However,thelong-termstabilitywasaconcern.HerewereportourfindingsontheeffectofathinfilmcoatingofLa0.85Sr0.15MnO3-δ(LSM)ontheperformanceofaporousLa0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF)cathode.WhenthethicknessesoftheLSMcoatingsareappropriate,anLSM-coatedLSCFelectrodeshowedbetterstabilityandlowerpolarization(orhigheractivity)thantheblankLSCFcathodewithoutLSMinfiltration.Ananode-supportedcellwithanLSM-infiltratedLSCFcathodedemonstratedat825℃apeakpowerdensityof～1.07W/cm2,about24%higherthanthatofthesamecellwithoutLSMinfiltration(～0.86W/cm2).Further,theLSMcoatingenhancedthestabilityoftheelectrode;therewaslittledegradationinperformanceforthecellwithanLSM-infiltratedLSCFcathodeduring100hoperation.

简介：Arepeatedinterdiffusionmethodisdescribedforphase-stableandhigh-quality(FA,MA)PbI_3film.Thecrystallizationandgrowthoftheperovskitefilmscanbewellcontrolledbyadjustingthereactantconcentrations.Withthismethod,dense,smoothperovskitefilmswithlargecrystalshavebeenobtained.Finally,aPCEof16.5%aswellasasteady-stateefficiencyof16.3%isachievedintheplanarperovskitesolarcell.

简介：Studieshavebeencarriedouttotesttheassumptionthattheprimaryphotoreceptorsfortheradioprotectiveactionof633nmlaserradiationarethecytochrome-c-oxidases.Todothis,thedevicewascreatedforradiationprotectionofbiologicalobjectsbasedonlasermodulewithawavelengthof532nm.Experimentsconductedonmurinefibroblastcellsshowedthattheradioprotectioneffectoflaserirradiationwasobservedinthedoseintervalabout0.4-0.85mJ/cm2.Maximumradioprotectioneffectisobservedatlaserradiationenergydensity~0.56mJ/cm2.ThedeterminationofthecellsurvivalwiththeautomaticcounterСТ20aftertheactionoftheionizingandcombinedirradiationshowedthatradioprotectiveactionofthelaserradiationwiththewavelengthof533nm,aswellastheradiationwiththewavelengthof633nm,istransferredbythemechanismofthe“bystandereffect”.Inaddition,itwasfoundthatradioprotectioneffectoflaserirradiationobservedonthecriterionofnumberofsurvivingsinglecells,comparedwithcellsexposedto?-radiationLaserirradiation,produceseffectiveradioprotectingactionalsoonthecriterionofgrowncellcolonies.Thevalueofthedosemodificationfactor(DMF)calculatedon50%cellsurvival(LD50)isequalto1.4.Theresultssuggestthatinthecaseofradioprotectiveactionofsmalldosesoflaserradiationwithawavelengthof633nm,aswellas532nmprimaryphotoreceptorsisthecytochrome-c-oxidases.

简介：Inthiswork,webrieflydiscussanovelclassofmodifiedgravitylikef(T,TG)gravity.Inthisbackground,weassumethenewagegraphicversionofpilgrimdarkenergyandreconstructf(T,TG)modelsfortwospecificvaluesofs.Wealsodiscusstheequationofstateparameter,squaredspeedofsoundandwDE-wDEplaneforthesereconstructedf(T,TG)models.Theequationofstateparameterprovidesphantom-likebehavioroftheuniverse.ThewDE-wDEplanealsocorrespondstoΛCDMlimit,thawingandfreezingregionsforbothmodels.

简介：Inthispaper,wereportahigh-performanceP3HT/PCBMbulk-heterojunctionsolarcellwithapowerconversionefficiencyof4.85%fabricatedbyadjustingthepolymercrystallinityandnanoscalephaseseparationusinganultrasonicirradiationmixingapproachforthepolymer.ThegrazingincidenceX-raydiffraction,UV/Visspectroscopic,andatomicforcemicroscopicmeasurementresultsfortheP3HT/PCBMblendfilmsrevealthattheP3HT/PCBMfilmfabricatedbyultrasonicirradiationmixingoftheP3HTandPCBMsolutionsfor10minhasahigherdegreeofcrystallinity,ahigherabsorptionefficiency,andbetterphaseseparation,whichtogetheraccountforthehigherchargetransportpropertiesandphotovoltaiccellperformance.

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简介：Newmetal-freeorganicdyesensitizerscontainingmono-triphenylamineorbis-triphenylamineastheelectrondonor,athiopheneastheπ-conjugatedsystem,andacyanoacrylicacidmoietyastheelectronacceptorweresynthesized.Theopticalandelectrochemicalpropertiesofthedyeswereinvestigated,andtheirperformanceassensitizersinsolarcellswasevaluated.Dye-sensitizedsolarcellsbasedondyecontainingbis-triphenylamineastheelectrondonorproducedaphoton-to-currentconversionefficiencyof6.06%(Jsc=14.21mA/cm~2,Voc=0.62V,ff=0.69)under100mW/cm~2simulatedAM1.5Gsolarirradiation(100mW/cm~2).

简介：An-typesmallmoleculeDC-IDT2F,with4,4,9,9-tetrakis(4-hexylphenyl)-indaceno[1,2-b:5,6-b]dithiopheneasacentralbuildingblock,furanasπ-bridges,and1,1-dicyanomethylene-3-indanoneasendacceptorgroups,wassynthesizedandusedasanelectronacceptorinsolution-processedorganicsolarcells(OSCs).DC-IDT2Fexhibitedgoodthermalstability,broadandstrongabsorptionin500–850nm,anarrowbandgapof1.54eV,LUMOof–3.88eV,HOMOof–5.44eVandanelectronmobilityof6.5×10–4cm2/(V·s).DC-IDT2F-basedOSCswithconventionalandinvertedstructuresexhibitedpowerconversionefficienciesof2.26and3.08%,respectively.Theeffectofverticalphaseseparationandmorphologyoftheactivelayeronthedeviceperformanceinthetwostructureswasstudied.