Optoelectronic Technology, Volume. 41, Issue 4, 262(2021)

Factors Affecting the Measurement of Perovskite Mobility by Space Charge Limited Current Method

Yongtao HUANG, Shu HU, and Chuanxiang SHENG
Author Affiliations
  • School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, CHN
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    Figures & Tables(11)
    Illustration schematic of the principle in SCLC measurement and logJ-logV curve in ideal case
    Hysteresis caused by ion migration and PV-SCLC method[25]
    J⁃V curves of experiment and simulation (obtained from different dielectric constants and ion migration cases) [16]
    Effect of temperature and voltage sweep rate dependence of dielectric constant on J⁃V curves
    Energy band diagram of symmetric and asymmetric ohmic contact devices[47]
    Influence of built-in electric field and verification of analytical model[49]
    Different ways to obtain the built-in electric field
    Effects of thickness and injection barrier on mobility extraction
    • Table 1. Mobility of perovskite measured by space charge limited current method (all at room temperature)

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      Table 1. Mobility of perovskite measured by space charge limited current method (all at room temperature)

      钙钛矿形态制备工艺

      电子迁移率

      (cm2·V-1·s-1

      空穴迁移率(cm2·V-1·s-1

      Nt/

      (cm-3

      ε备注Ref.
      MAPbI3单晶顶部引晶溶液生长法24.816432

      H:Au/PSK/Au;

      E:Ga/PCBM/PSK/PCBM/C60/Ga;

      [3]
      逆温结晶67.21.4×1010H:Au/PSK/Au;[15]
      反溶剂蒸发辅助5365

      E:Ti/PSK/Ti;

      H:Ag/Au/MoO3/PSK/MoO3/Au/Ag;

      [9]
      反溶剂蒸发辅助2.53.3×101025.5E:Ag/MoO3/Au/PSK/Au/MoO3/Ag;[11]
      几何约束生长45.6432H:Au/PSK/Au; in plane;[32]
      薄膜气固反应1.122.13×1015H:FTO/PSK/Au;[33]
      气固反应0.832.51×1015
      溶液1.4×10-21.48×1017
      溶液2.25×10-22.05×10-232

      E:FTO/TiO2/PSK/PCBM/Ag;

      H:ITO/PEDOT:PSS/PSK/Spiro⁃OMeTAD/Au;

      [13]
      溶液9.92×10-21.18×10-1
      溶液19.81.52×1016E:FTO/TiO2/PSK/PCBM/Au;[34]
      溶液3.064.73×1016

      H:ITO/PSK/Au;

      加入TDZDT;

      加入TZDT;

      [35]
      溶液10.276.63×1015
      溶液5.649.95×1015
      溶液2.7×10-42.85×1015H:ITO/PEDOT:PSS/PSK/PTAA/Ag;[36]
      溶液6.1×10-41.4×1015前驱体溶液加入氯苯;
      MAPb(IxCl3-x)薄膜溶液22.749.68×1015E:FTO/TiO2/PSK/PCBM/Au[34]
      MAPbBr3单晶逆温结晶24.03.0×1010H:Au/PSK/Au;[15]
      反溶剂蒸发辅助385.8×10925.5E:Ag/MoO3/Au/PSK/Au/MoO3/Ag;[11]
      FAPbI3单晶逆温结晶359.6×10949.4H:Au/PSK/Au;[19]
      α逆温结晶4.46.2×101146.9H:In/PSK/In;[12]
      δ逆温结晶1.79×10-12.6×1011
      薄膜溶液1.1×10-31.3×1016
      FAPbBr3单晶逆温结晶621.1×101043.6H:Au/PSK/Au;[19]
      CsSnI3薄膜溶液8×10-18.36×101648.2H:ITO/Spiro⁃OMeTAD/PSK/Spiro⁃OMeTAD/Au;[37]

      (CPEA)2(MA)n-1

      PbnI3n+1

      薄膜溶液8.73×10-510.9×101532E:FTO/TIO2/PSK/PCBM/Au; n=3;[8]
      溶液1.26×10-310.6×1015n=4;
      溶液1.59×10-39.18×1015n=5;
      溶液6.92×10-39.96×1015n=6;
      (BA)2(MA)3Pb4I13薄膜溶液2.5×10-31.6×101525

      E:FTO/TIO2/PSK/PCBM/Ag;

      掺杂Cs:0.5%;

      掺杂Cs:0.5%;

      掺杂Cs:0.5%;

      [7]
      2.9×10-31.31×1015
      2.0×10-32.2×1015
      1.6×10-32.78×1015
      4.2×10-45.3×1015E:Ag/PSK/PCBM/Ag;[38]
      6.7×10-43.1×1015前驱体中加入氯苯;
      4.44×10-36.63×10-2

      E:ITO/SnO2/PSK/PCBM/Au;

      旋涂温度:30°C

      [14]
      5.64×10-26.34×10-2H:ITO/PEDOT:PSS/PSK/Spiro⁃OMeTAD/Au;旋涂温度:70℃;
      6.68×10-25.09×10-2旋涂温度:130℃;
      6.5×10-45.3×1015E:Ag/PSK/PCBM/Ag;[39]
      4.7×10-44.6×1015E:Ag/PSK/ITIC⁃Th/Ag;
      5.6×10-46.8×1015E:Ag/PSK/PCBM/Ag;[40]
      Cs2AgBiBr6单晶水热反应4.473.6×1010Au/PSK/Au;摩尔比Ag : Bi 1 : 1;[10]
      6.992.71×1011Ag : Bi 1 : 1.1;
      8.821.06×1010Ag : Bi 1 : 1.15;
      22.39.57×1019Ag : Bi 1 : 1.2;
      BA2MA2Pb3I10单晶水冷结晶3.2×10-61.1×10825Au/PSK/Au;[18]
      9.6×10-3in⁃plane;
      ALA2MA2PbI10单晶水冷结晶2.4×10-51.0×10825Au/PSK/Au;
      1.3×10-2in⁃plane;
      PEA2MA2Pb3I10单晶水冷结晶1.2×10-57.0×10725Au/PSK/Au;
      4.4×10-2in⁃plane;
      PEA2MA3Pb4I13薄膜溶液4.15×10-33.25×1015H:ITO/PTAA/PSK/Au;[41]
      薄膜溶液1.43×10-64.41×10-51.5×1016

      H:FTO/PEDOT:PSS/PSK/PTAA/Au;

      E:FTO/TiO2/PSK/PCBM/Ag;

      [42]
      PEA2MA4Pb5I16薄膜溶液2.2×10-31.4×1017H:Au/PSK/Au;PV⁃SCLC;[43]
      MA3Sb2I9单晶热液13.841.29×10105.28H:Au/PSK/Au; f=1 kHz;[44]
      15.511.16×10104.71f=10 kHz;
      16.531.08×10104.42f=100 kHz;
      16.681.07×10104.38f=200 kHz;
      单晶热液b31.903.78×10107.07f=1 kHz;
      34.493.49×10106.64f=10 kHz;
      40.143×10105.62f=100 kHz;
      43.052.80×10105.24f=200 kHz;
      PSK:钙钛矿;H:仅空穴器件结构;E:仅电子器件结构;α:α⁃单晶;δ:δ⁃单晶;a:加入了二维微晶EDBEPbI4;b:Sn掺杂;in plane:两电极在同一平面;MA:CH3NH3(Methylammonium);FA:HC(NH2)2(Formamidinium);PEA:2⁃phenylethylammonium;CPEA:ClC6H4C2H4NH3,BA:C4H9NH3;in plane:PV⁃SCLC:(Pulse Voltage⁃Space Charge Limited Current)脉冲电压空间电荷限制电流法;TDZT:1,3,4⁃thiadiazolidine⁃2⁃thione;TDZDT:1,3,4⁃thiadiazolidine⁃2,5⁃dithione
    • Table 2. Some mobility description models with defect effects

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      Table 2. Some mobility description models with defect effects

      描述等式Refs.
      无缺陷J=98εμV2L3[20](1)
      单一浅能级缺陷(真空二极管)I=10-13εμ0θL3V2  θ=Nc/Nte-E/kT[52](8)
      均匀分布缺陷(真空二极管)I=10-13εμ0θL3V2  θ=eLNce-Ef/kTeVC/ntLekTVC[52](9)
      指数分布缺陷J=NCμe1-lϵlNtl+1l2l+1l+1l+1Vl+1L2l+1[53](10)
      浅能级缺陷+Poole⁃Frenkel效应J=98εμeV2L3μe=μ0exp0.89γE[55](11)
    • Table 3. Effects of various factors on perovskite mobility measured by SCLC

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      Table 3. Effects of various factors on perovskite mobility measured by SCLC

      因素主要影响解决措施是否在钙钛矿中有研究
      离子迁移离子迁移对电荷注入提取有显著影响脉冲电压空间电荷限制电流法
      介电常数的依赖性钙钛矿材料的介电常数是扫描速率以及温度的函数针对不同温度以及扫描电压,使用不同介电常数
      内建电场非对称电极功函数造成内建电场通过实验J⁃V曲线获得内建电场,并使用修正Mott⁃Gurney公式
      缺陷降低了电流大小,扭曲J⁃V曲线形状,电流电压由平方关系变为更高幂次针对不同缺陷分布,使用不同修正式
      厚度与注入势垒太薄以及注入势垒较高的器件可能使J⁃V曲线的二次方关系不会出现制备能级匹配器件,仔细选用电极,减少注入势垒,并制备较厚钙钛矿材料
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    Yongtao HUANG, Shu HU, Chuanxiang SHENG. Factors Affecting the Measurement of Perovskite Mobility by Space Charge Limited Current Method[J]. Optoelectronic Technology, 2021, 41(4): 262

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    Paper Information

    Category: Research and Trial-manufacture

    Received: Apr. 20, 2021

    Accepted: --

    Published Online: Aug. 3, 2022

    The Author Email:

    DOI:10.19453/j.cnki.1005-488x.2021.04.005

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