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首页> 外文期刊>Advanced Functional Materials >Constructing CsPbBr_3 Cluster Passivated-Triple Cation Perovskite for Highly Efficient and Operationally Stable Solar Cells
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Constructing CsPbBr_3 Cluster Passivated-Triple Cation Perovskite for Highly Efficient and Operationally Stable Solar Cells

机译：为高效和稳定运行的太阳能电池构建CsPbBr_3簇钝化三阳离子钙钛矿

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摘要

Ion migration and phase segregation, in mixed-cation/anion perovskite materials, raises a bottleneck for its stability improvement in solar cells operation. Here, the synergetic effect of electric field and illumination on the phase segregation of Cs(0.)(05)FA(0.)(80)MA(0.15)Pb(I0.85Br0.15)(3) (CsFAMA) perovskite is demonstrated. CsFAMA perovskite with a CsPbBr3-clusters passivated structure is realized, in which CsPbBr3-clusters are located at the surface/interface of CsFAMA grains. This structure is realized by introducing a CsPbBr3 colloidal solution into the CsFAMA precursor. It is found that CsPbBr3 passivation greatly suppresses phase segregation in CsFAMA perovskite. The resultant passivated CsFAMA also exhibits a longer photoluminescence lifetime due to reduced defect state densities, produces highly efficient TiO2-based planar solar cells with 20.6% power conversion efficiency and 1.195 V open-circuit voltage. The optimized devices do not suffer from a fast burn-in degradation and retain 90% of their initial performance at maximum power under one-sun illumination at 25 degrees C (65 degrees C) exceeding 500 h (100 h) of continuous operation. This result represents the most stable output among CsFAMA solar cells in a planar structure with Spiro-OMeTAD.
机译：混合阳离子/阴离子钙钛矿材料中的离子迁移和相偏析为提高其在太阳能电池运行中的稳定性提出了瓶颈。在此，电场和光照对Cs（0。）（05）FA（0。）（80）MA（0.15）Pb（I0.85Br0.15）（3）（CsFAMA）钙钛矿相分离的协同作用被证明。实现了具有CsPbBr3-团簇钝化结构的CsFAMA钙钛矿，其中CsPbBr3-团簇位于CsFAMA晶粒的表面/界面处。通过将CsPbBr3胶体溶液引入CsFAMA前体来实现此结构。发现CsPbBr3钝化极大地抑制了CsFAMA钙钛矿中的相偏析。由于降低的缺陷态密度，所得的钝化CsFAMA还表现出更长的光致发光寿命，可产生具有20.6％的功率转换效率和1.195 V开路电压的高效TiO2基平面太阳能电池。经过优化的器件不会出现快速老化现象，并且在25°C（65°C）超过500 h（100 h）的连续​​运行的阳光照射下，在最大功率下仍可保持90％的初始性能。该结果代表在具有Spiro-OMeTAD的平面结构中的CsFAMA太阳能电池中最稳定的输出。

著录项

  • 来源
    《Advanced Functional Materials》 |2019年第14期|1809180.1-1809180.11|共11页
  • 作者

    Zhou Wenke; Chen Shulin; Zhao Yicheng; Li Qi; Zhao Yao; Fu Rui; Yu Dapeng; Gao Peng; Zhao Qing;

  • 作者单位

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China|Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China|Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China|South Univ Sci & Technol China SUSTech, Inst Quantum Sci & Technol, Shenzhen 518055, Peoples R China|South Univ Sci & Technol China SUSTech, Dept Phys, Shenzhen 518055, Peoples R China;

    Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China|Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China|Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China;

    Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China|Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China;

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  • 关键词

    CsPbBr3-clusters; ion migration; perovskite solar cells; phase segregation; stability;

    机译：CsPbBr3团簇;离子迁移;钙钛矿太阳能电池;相分离;稳定性;

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