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简介：Theaveragebondenergymethodispopularizedandappliedtostudybandoffsetsatstrainedlayerheterojunctions.BycarefulexaminationofhydrostaticanduniaxialstrainactionsonthebandoffsetparameterEmv,itisfoundthattheaveragebandoffsetparameterEmv,av=Em-Ev,avremainsbasicallyunchangedunderdifferentstrainconditions.Therefore,providedthebandoffsetparameterbeforestrainEmv,0ofbulkmaterialiscalculated,andtheexperimentvaluesofdeformationpotentialbandspin-orbit(SO)splittingenergy△0arequoted,theEmvatstrainedlayercanbeobtainedbyasimpleandconvenientalgebraiccalculation.Thusthevalencebandoffset△Evatstrainedlayerheterojunctincanalsobepredictedconveniently.Thissimplifiedcalcultationmethodischaracterizedbydecreasedcalculationamountandincreasedconvictionduetouseasmanyaspossibletheexperimentvalues.

简介：小分子有铟听氧化物(ITO)的结构的器官的太阳能电池(振荡)/molybdenum三氧化物(MoO3)(5nm)/rubrene(nm)/fullerene(C70)(ynm)/2，9-dimethyl-4，7-diphenyl-1，10-phenanthroline(BCP)(6nm)/aluminum(艾尔)(150nm)被制作。为设备的活跃的层的厚度在细节被调查。结果证明rubrene层和C70层的最佳厚度分别地是30nm和25nm。设备的降级也被调查。，结果显示开电路的电压(Voc)不变化电线走火电流密度(Jsc)，用时间连续地填满因素(FF)和功率变换效率(PCE)减少。降级能在周围的扩散并且渗透到活跃材料并且在房间与C70反应被归因于氧，它能导致界面的系列电阻的增加。

简介：Ionimplantationmayfavorablymodifythepropertiesofpolyaniline/Siheterojunctionsolarcellsfabricatedbytheelectrochemicalmethod.Influencesoftheimplantationontheabsorptionspectrumandthethermalstabilitywerediscussedandoutputpropertiesweremeasured.Theresultsshowthattheabsorptionspectrumofthepolyanilinefilmsmodifiedbyionimplantationismuchwider;itspyrolytictemperatureincreasesby40℃,andthepolyaniline/Sicellefficiencyincreases18and3timesundertheilluminationof10.92and37.2W/m2,respectively.

简介：N-ZnO/p-Si异质接面被内在的ZnO电影的劈啪作响的免职在希腊语的第二十三个字母底层上准备。ZnO电影的厚度被从1h改变免职时间到3h改变。这些结构的电的性质从电容电压(C-V)被分析并且当前电压(I-V)特征表现在一个黑暗房间里。结果证明所有样品显示出强壮的修正行为。为有ZnO电影的不同厚度的样品的光电的性质被测量开的电路电压和短路电流调查。相片电压被坚守，这被发现当光电流变化时，与厚度一起的320mV几乎不变很多。ZnO电影的厚度的功能被调查的光电的效果的变化机制。

简介：我们与经由化学方法获得的Agnanoparticles(AgNPs)报导提高电浆子的聚合物体积异质接面太阳能电池。这里，有不同粒子密度的AgNPs电影被介绍在之间poly(3,4乙烯dioxythiophene)poly(styrenesulfonate)(PEDOT：PSS)缓冲区层并且poly(3-hexythiophene):[6,6]-phenyl-C61奶油的酸甲基酉旨(P3HT：PCBM)层。由由于局部性的表面电浆子改进活跃的层的光吸收，太阳能电池的力量变换效率与控制设备相比被增加。设备的效率与AgNPs的密度增加，这被显示出。为采用更高的密度的设备，结果的力量变换效率被发现从2.89%～3.38%增加，在16.96%提高了。

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简介：Owingtoitsthickness-modulateddirectenergybandgap,relativelystronglight–matterinteraction,anduniquenonlinearopticalresponseatalongwavelength,few-layerblackphosphorus,orphosphorene,becomesveryattractiveinultrafastphotonicsapplications.Herein,wesynthesizedagraphene/phosphorenenano-heterojunctionusingaliquidphase-strippingmethod.Tinylatticedistortionsingrapheneandphosphorenesuggesttheformationofanano-heterojunctionbetweengrapheneandphosphorenenanosheets.Inaddition,wesystematicallyinvestigatetheirnonlinearopticalresponsesatdifferentwavelengthregimes.Ourexperimentsindicatethatthecombinedadvantagesofultrafastrelaxation,broadbandresponseingraphene,andthestronglight–matterinteractioninphosphorenecanbecombinedtogetherbynano-heterojunction.Wehavefurtherfabricatedtwo-dimensional(2D)nano-heterojunctionbasedopticalsaturableabsorbersandintegratedthemintoanerbium-dopedfiberlasertodemonstratethegenerationofastableultrashortpulsedownto148fs.Ourresultsindicatethatagraphene/phosphorenenano-heterojunctioncanoperateasapromisingsaturableabsorberforultrafastlasersystemswithultrahighpulseenergyandultranarrowpulseduration.Webelievethisworkopensupanewapproachtodesigning2Dheterointerfacesforapplicationsinultrafastphotonicsandotherresearch.Thefabricationofa2Dnano-heterojunctionassembledfromstackingdifferent2Dmaterials,viathisfacileandscalablegrowthapproach,pavesthewayfortheformationandtuningofnew2Dmaterialswithdesirablephotonicpropertiesandapplications.

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简介：Basedonsimpleanalyticalequations,shortcircuitcurrentdensity(JSC)oftheorganicbulkheterojunctionsolarcellshasbeencalculated.ItisfoundthattheopticalinterferenceeffectplaysaveryimportantroleinthedeterminationofJSC;andobviousoscillatorybehaviourofJSCwasobservedasafunctionofthickness.Atthesametime,theinfluenceofthecarrierlifetimeonJSCalsocannotbeneglected.Whenthecarrierlifetimeisrelativelyshort,JSConlyincreasesattheinitialstageandthendecreasesrapidlywiththeincreaseofactivelayerthickness.However,forarelativelylongcarrierlifetime,theexcitondissociationprobabilitymustbeconsidered,andJSCbehaveswave-likewiththeincreaseofactivelayerthickness.Thevalidityofthismodelisconfirmedbytheexperimentalresults.

简介：ZnOnanoconearrays(NCAs)decoratedwithblackTiO2nanoparticles(BTiO2NPs)wereuniformlyanchoredonthesurfaceofcarboncloth(CC)directlybyasimplyelectrochemicaldepositionmethod.ThusanovelB-TiO2NPs/ZnONCAs-CChierarchicalheterostructurewasformed.Itdisplayedsuperiorperformanceandachievedahigherphotocurrentover0.4mA·cm^-2beforetheonsetofthedarkcurrent,attributedtotheseparationofthephotogeneratedelectron-holepair.BasedontheB-TiO2NPs/ZnONCAs-CCheterostructure,thecatalystwasfabricatedforpromotingtheseparationofchargecarriers.Moreover,theintroductionofTi^3+andoxygenvacanciesonthesurfaceofTiO2NPsexpandedtheabsorptionbandedgeandenhancedtheelectricalconductivityaswellasthechargetransportationonthecatalyticsurface.ItindicatesthattheB-TiO2NPs/ZnONCAs-CCcompositeisbeneficialtotheimprovementofthephotoelectrochemical(PEC)activity.

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简介：水晶的Au5Si2/Si异质接面nanowires(Au5Si2/SiNWs)被热蒸发的SiO粉末在一个低真空系统在厚黄金涂的硅底层上获得。生产Au5Si2/Si异质接面的结构分析被采用一台传播电子显微镜(TEM)和一个选择区域执行电的衍射计。化学作文被纳入TEM的一个精力散的X光分光镜学习。一个二拍子的圆舞生长模型被建议描述Au5Si2/SiNWs的形成。在第一步期间，水晶的SiNWs经由在相对高的温度把帮助氧化物的生长过程与vapour-liquid-solid模型相结合的生长机制被形成。在第二步，preformedSiNWs的温度减少和减少片断与残余Au反应由一个solid-liquid-solid过程形成单个水晶的Au5Si2nanowires。现在的工作应该基于nanowires为未来合成和高质量的金silicidenanowires和微电子设备的研究是有用的。

简介：Inthisstudy,weinvestigatetheinfluenceofdopingonthechargetransferanddevicecharacteristicsparametersinthebulkheterojunctionsolarcellsbasedonpoly(3-hexylthiophene)(P3HT)andamethanofuUerenederivative(PCBM).Organicsemiconductorsarealsoknowntobenotpureandtheyhavedefectsandimpurities,someofthemarebeingchargedandactasp-typeorn-typedopants.Calculationsofthesolarcellcharacteristicsparametersversusthep-dopinglevelhavebeendoneatthreedifferentn-dopings(N_d)thatconsistof5×10~(17)cm~(-3),10~(18)cm~(-3),and5×10~(18)cm~(-3).Weperformtheanalysisofthedopingconcentrationthroughthedrift-diffusionmodel,andcalculatethecurrentandvoltagedopingdependency.Wefindthatatthreedifferentn-dopantlevels,optimump-typedopingisaboutN_p=6×10~(18)cm~(-3).Simulationresultshaveshownthatbyincreasingdopinglevel,V_(oc)monotonicallyincreasesbydoping.CellefficiencyreachesitsmaximumatsomewhathigherdopingasFFhasitspeakatN_p=3×10~(18)cm~(-3).Moreover,thispaperdemonstratesthattheoptimumvalueforthep-dopingisaboutN_p=6×10~(18)cm~(-3)andoptimumvalueforn-dopantisN_d=10~(18)cm~(-3),respectively.Thesimulatedresultsconfirmthatdopingconsiderablyaffectstheperformanceoforganicsolarcells.

简介：Theelectrontransportlayer(ETL)playsanimportantroleinplanarheterojunctionperovskitesolarcell(PSCs),byaffectingthelight-harvesting,electroninjectionandtransportationprocesses,andespeciallythecrystallizationofperovskiteabsorber.Inthiswork,weutilizedacommercialTKD-TiO_2nanoparticlewithasmalldiameterof6nmforthefirsttimetoprepareacompactETLbyspincoating.Thepackingofsmall-sizeparticlesendowedTKD-TiO_2ETLanappropriatesurface-wettability,whichisbeneficialtothecrystallizationofperovskitedepositedviasolution-processedmethod.Theuniformandhigh-transmittanceTKD-TiO_2filmsweresuccessfullyincorporatedintoPSCsasETLs.FurthercarefuloptimizationofETLthicknessgavebirthtoahighestpowerconversionefficiencyof11.0%,whichwasmuchhigherthanthatofPSCusinganETLwiththesamethicknessmadebyspraypyrolysis.ThisTKD-TiO_2providedauniversalsolarmaterialsuitableforthefurtherlarge-scaleproductionofPSCs.TheexcellentmorphologyandtheconvenientpreparationmethodofTKD-TiO_2filmgaveitanextensiveapplicationinphotovoltaicdevices.

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