,82 北京科技大学学报 第32卷 子()随着PE浓度的增加而减小.从以上结果可 fomance of Zno nanorod array fims J Solid State Chen.2005. 以看出,7.3 mmol L的PEI浓度下制备出的Zn0 178(10):3210 [4]Law M.Greene LE Johnson JC et al Nanow ine dye sensitized 纳米线具有高的长径比、最大的线密度和较窄的直 solar cells NatM ater 2005.4:455 径分布,从而表现出了最好的电池性能 [5]Quintana M.Edvinsson T.HagfeHt A.et al Comparison of dye- 表2基于不同PE浓度下得到的ZO纳米线阵列DSC的参数 Sensitized Zno and TD2 solar cell Sudies of charge tansport Table2 Panmeters ofDSC based on ZnO nanow im arrays obtained w ith and carrier lifetine JPhys Chen C.2007,111(2):1035 different PEI concentrations frm 3.2 to 9.3mmok L [6]Zhang Q F.Chou T P.Russo B R.et al Aggregation of Zno nanocrystallites for high conversion efficieney in dye"sensitized so- PE脓度/ / 7% lar cells Angew Chem Int Ed 2008 47(13):2402 (mmokL1) (mA.an-2) mV [7]Nelson J Haque S A.K hg D R.et al Trap-lin ited recambina- 3.2 1.41 513 0.58 0.42 tion in dye"sensitized nanocrystallne metal oxide electrodes Phys 5.3 1.84 532 0.57 0.66 RwB2001,63(20):Article No205321 6.0 1.81 531 0.56 0.54 [8]Boyle D S Govender K.0'Brien P.Novel bw temperatre sol- tion deposition of perpend icularly orien tated mds ofZnO:substrale 7.3 2.40 544 0.51 0.66 effects and evidence of the mportance of coun terions n the contmol 8.2 2.11 525 0.47 0.52 of erystallite gmow th Chen Cammun 2002(1):80 9.3 2.02 517 0.48 0.50 [9]Gao H M.FangG J W angM J et al The effect of grow th condi tions on the pmoperties of Zno nanorod dye sensitized solar cells 3结论 Mater Res Bull 2008 43(12):3345 [10]Guo M.Diao B Cai S M.Hydmothemal gnow th of well aligned 本文研究了不同浓度的表面活性剂PE对水热 Zno nanond arrays Dependence of mohobgy and aligmment 制备ZmO纳米线阵列的形貌和尺寸的影响,并进一 onlering upon preparing conditions J Solid State Chan.2005. 178(6):1864 步考察了它们的电池性能.结果表明,7.3mmo [11]LiW J ShiE W.Zhong W Z et al Gmow th mechanim and L的PE浓度下制备出的Z0纳米线具有高的长 gmw th habit of oxide crystals JCryst Grow th 1999 203(12): 径比、最大的线密度和较窄的直径分布,从而表现出 186 了最好的电池性能 [12]Sousa V C Segadaes A M.MorelliM R.et al Cambustion syn- thesized Zno powders for varistor ceramn ics Int J Inong Mater 19991(3M):235 参考文献 [13]YamabiS mai H.Gmwth conditions for wurtzite zinc oxide [1]Zhong J KitaiA H.MascherP et al The nfhence of pmcess- fils in aqueous sohitions JMater Chan.2002 12(12):3773 ing conditions on point defects and hm inescence centers in Zno.J [14]Elias J Tena Zaem R.LevyCkment C.Electrodeposition of Electmochan Soe 1993 140(12):3644 ZnO nanow ires w ith contolled diensions for photovoltaic appli [2]Beemann N.Vayssieres L Lindquist SE et al Photoelectro- cations Role of buffer lyer Thin Sold Fims 2007,515(24): chem ical stdies of oriented nanord thin fims of hematite JElec- 8553 tmochan Soo2000147(7):2456 [15]Gao Y,Nagai M.Chang T C et al Soltion derived Zno [3]Guo M.Diao P.W ang X D.et al The effect of hydmthemal nanow ire array fim as photoe lectrode in dye-sensitized solar grow th temperatre on preparation and photoelectrochem ical per cells Cryst Gmow th Des 2007,7(12):2467北 京 科 技 大 学 学 报 第 32卷 子 (ff)随着 PEI浓度的增加而减小.从以上结果可 以看出7∙3mmol·L -1的 PEI浓度下制备出的 ZnO 纳米线具有高的长径比、最大的线密度和较窄的直 径分布从而表现出了最好的电池性能. 表 2 基于不同 PEI浓度下得到的 ZnO纳米线阵列 DSC的参数 Table2 ParametersofDSCbasedonZnOnanowirearraysobtainedwith differentPEIconcentrationsfrom3∙2to9∙3mmol·L-1 PEI浓度/ (mmol·L-1) Isc/ (mA·cm-2) Voc/ mV ff η/% 3∙2 1∙41 513 0∙58 0∙42 5∙3 1∙84 532 0∙57 0∙66 6∙0 1∙81 531 0∙56 0∙54 7∙3 2∙40 544 0∙51 0∙66 8∙2 2∙11 525 0∙47 0∙52 9∙3 2∙02 517 0∙48 0∙50 3 结论 本文研究了不同浓度的表面活性剂 PEI对水热 制备 ZnO纳米线阵列的形貌和尺寸的影响并进一 步考察了它们的电池性能.结果表明7∙3mmol· L -1的 PEI浓度下制备出的 ZnO纳米线具有高的长 径比、最大的线密度和较窄的直径分布从而表现出 了最好的电池性能. 参 考 文 献 [1] ZhongJKitaiAHMascherPetal.Theinfluenceofprocess- ingconditionsonpointdefectsandluminescencecentersinZnO.J ElectrochemSoc1993140(12):3644 [2] BeermannNVayssieresLLindquistSEetal.Photoelectro- chemicalstudiesoforientednanorodthinfilmsofhematite.JElec- trochemSoc2000147(7):2456 [3] GuoMDiaoPWangXDetal.Theeffectofhydrothermal growthtemperatureonpreparationandphotoelectrochemicalper- formanceofZnOnanorodarrayfilms.JSolidStateChem2005 178(10):3210 [4] LawMGreeneLEJohnsonJCetal.Nanowiredye-sensitized solarcells.NatMater20054:455 [5] QuintanaMEdvinssonTHagfeldtAetal.Comparisonofdye- SensitizedZnOandTiO2 solarcells:Studiesofchargetransport andcarrierlifetime.JPhysChemC2007111(2):1035 [6] ZhangQFChouTPRussoBRetal.AggregationofZnO nanocrystallitesforhighconversionefficiencyindye-sensitizedso- larcells.AngewChemIntEd200847(13):2402 [7] NelsonJHaqueSAKlugDRetal.Trap-limitedrecombina- tionindye-sensitizednanocrystallinemetaloxideelectrodes.Phys RevB200163(20):ArticleNo.205321 [8] BoyleDSGovenderKO’BrienP.Novellowtemperaturesolu- tiondepositionofperpendicularlyorientatedrodsofZnO:substrate effectsandevidenceoftheimportanceofcounter-ionsinthecontrol ofcrystallitegrowth.ChemCommun2002(1):80 [9] GaoHMFangGJWangMJetal.Theeffectofgrowthcondi- tionsonthepropertiesofZnOnanoroddye-sensitizedsolarcells. 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