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BaTiO3掺杂调控内建电场提升钙钛矿太阳能电池性能
李家森2021硕士学位论文(北京:北京交通大学)
LiJS2021M.S.Thesis(Beijing:BeijingJiaotongUniversity
王明梓2022博士学位论文(西安:西北大学)
WangMZ2022Ph.D.Dissertation(Xi’an:NorthwestUniversity
朱丽杰2018博士学位论文(北京:北京交通大学)
ZhuLJ2018Ph.D.Dissertation(Beijing:BeijingJiaotongUniversity
图1(a)BaTiO3浓度不同时所制备的MAPbI3薄膜的XRD衍射图谱;(b)—(d)对应BaTiO3:MAPbI3复合薄膜(110)衍射峰归一化处理(b),强度变化(c),半峰宽(FWHM)变化(d)
Fig.1.(a)XRDpatternsofMAPbI3filmspreparedwithdifferentBaTiO3concentrations.(b)–(d)Correspondingtothe(110)diffractionpeakofBaTiO3:MAPbI3compositefilm:(b)(110)crystalplanenormalizationtreatment;(c)strengthvariation;(d)full-widthathalf-maximum(FWHM)variation.
图2不同质量分数BaTiO3掺杂MAPbI3薄膜的FE-SEM图(a)0;(b)0.5%;(c)1.0%;(d)2.0%
Fig.2.FE-SEMimagesofMAPbI3filmspreparedwithdifferentBaTiO3concentrations:(a)0;(b)0.5%;(c)1.0%;(d)2.0%.
图3(a)FTO/TiO2/MAPbI3和(b)FTO/TiO2/BaTiO3:MAPbI3薄膜的截面图
Fig.3.Filmcross-sectionof(a)FTO/TiO2/MAPbI3and(b)FTO/TiO2/BaTiO3:MAPbI3.
图4BaTiO3浓度不同时所制备的MAPbI3C-PSCs的J-V特性曲线
Fig.4.J-VcurvesofMAPbI3C-PSCspreparedwithdifferentBaTiO3concentrations.
图5基于MAPbI3和BaTiO3:MAPbI3单电子器件的空间电荷限制电流(SCLC)测试曲线
Fig.5.SpacechargelimitedcurrentmeasurementcurvesforMAPbI3andBaTiO3:MAPbI3single-electrondevice.
图6MAPbI3和BaTiO3:MAPbI3基C-PSCs的(a)暗电流曲线,(b)EQE曲线,(c)稳态输出电流曲线,(d)电化学阻抗谱(暗态,偏压0.6V,插图为等效电路图)
Fig.6.MAPbI3andBaTiO3:MAPbI3C-PSCs:(a)Darkcurrentcurves;(b)EQEcurves;(c)steady-stateoutputcurrentcurves;(d)electrochemicalimpedancespectroscopy(darkstate,0.6Vbias,illustratedasequivalentcircuitdiagram).
图7不同极化电压处理的BaTiO3:MAPbI3基C-PSCs的J-V特性曲线
Fig.7.J-VcurvesofBaTiO3:MAPbI3C-PSCstreatedwithdifferentpolarizationvoltages.
图8极化处理前后BaTiO3:MAPbI3基C-PSCs的(a)Mott-Schottky曲线和(b)稳态PL光谱
Fig.8.BaTiO3:MAPbI3C-PSCsbeforeandafterpolarizationtreatment:(a)Mott-Schottkycurves;(b)steady-statePLspectrum.
图9极化处理前后BaTiO3:MAPbI3基C-PSCs的(a)–dV/dJ与(JSC–J)–1关系曲线;(b)d(J/JSC)/dV与V–Voc关系曲线;(c)电化学阻抗谱;(d)不同偏压的Rrec
Fig.9.BaTiO3:MAPbI3C-PSCsbeforeandafterpolarizationtreatment:(a)Relationshipbetween–dV/dJand(JSC–J)–1;(b)relationshipbetweend(J/JSC)/dVandV–Voc;(c)electrochemicalimpedancespectroscopy;(d)Rrecwithdifferentbias.
图10极化处理前后BaTiO3:MAPbI3基C-PSCs的(a)暗电流曲线和(b)电压衰减曲线
Fig.10.BaTiO3:MAPbI3C-PSCsbeforeandafterpolarizationtreatment:(a)Darkcurrentcurves;(b)voltagedecaycurves.
图11BaTiO3:MAPbI3基C-PSCs的(a)极化原理图和(b)性能提升原理图
Fig.11.BaTiO3:MAPbI3C-PSCs:(a)Polarizationschematicdiagram;(b)performanceimprovementschematicdiagram.
表1不同浓度BaTiO3所制备的MAPbI3C-PSCs的光伏性能参数
Table1.PhotovoltaicparametersofMAPbI3C-PSCspreparedwithdifferentBaTiO3concentrations.
表2不同极化电压处理的BaTiO3:MAPbI3基C-PSCs的光伏性能参数
Table2.PhotovoltaicparametersofBaTiO3:MAPbI3C-PSCstreatedwithdifferentpolarizationvoltages.
表3极化处理前后BaTiO3:MAPbI3基C-PSCs的NA,Vbi,W值
Table3.NA,Vbi,WvaluesofBaTiO3:MAPbI3C-PSCsbeforeandafterpolarizationtreatment.