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首页> 外文期刊>Advanced Functional Materials >Conjugated Small Molecule for Efficient Hole Transport in High-Performance p-i-n Type Perovskite Solar Cells
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Conjugated Small Molecule for Efficient Hole Transport in High-Performance p-i-n Type Perovskite Solar Cells

机译：高性能p-i-n型钙钛矿太阳能电池中有效空穴传输的共轭小分子

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摘要

The pi-conjugated organic small molecule 4,4'-cyclohexylidenebis[N, N-bis(4-methylphenyl) benzenamine] (TAPC) has been explored as an efficient hole transport material to replace poly(3,4-ethylenedio-xythiophene): poly(styrenesulfonate) (PEDOT: PSS) in the preparation of p-i-n type CH3NH3PbI3 perovskite solar cells. Smooth, uniform, and hydrophobic TAPC hole transport layers can be facilely deposited through solution casting without the need for any dopants. The power conversion efficiency of perovskite solar cells shows very weak TAPC layer thickness dependence across the range from 5 to 90 nm. Thermal annealing enables improved hole conductivity and efficient charge transport through an increase in TAPC crystallinity. The perovskite photoactive layer cast onto thermally annealed TAPC displays large grains and low residual PbI2, leading to a high charge recombination resistance. After optimization, a stabilized power conversion efficiency of 18.80% is achieved with marginal hysteresis, much higher than the value of 12.90% achieved using PEDOT:PSS. The TAPC-based devices also demonstrate superior stability compared with the PEDOT:PSS-based devices when stored in ambient circumstances, with a relatively high humidity ranging from 50 to 85%.
机译：π共轭有机小分子4,4'-环己叉基双[N，N-双（4-甲基苯基）苯甲胺]（TAPC）已被研究为替代聚（3,4-亚乙基二噻吩并噻吩）的有效空穴传输材料。 ：聚（苯乙烯磺酸盐）（PEDOT：PSS）用于制备针型CH3NH3PbI3钙钛矿型太阳能电池。光滑，均匀且疏水的TAPC空穴传输层可通过溶液浇铸轻松沉积，而无需任何掺杂剂。钙钛矿太阳能电池的功率转换效率在5至90 nm的范围内显示出非常弱的TAPC层厚度依赖性。热退火可通过提高TAPC的结晶度来改善空穴传导性并实现有效的电荷传输。浇铸到热退火的TAPC上的钙钛矿光敏层显示出大晶粒和低残留的PbI2，从而导致高的耐电荷复合性。经过优化后，边际磁滞可实现18.80％的稳定电源转换效率，远高于使用PEDOT：PSS可获得的12.90％的值。与基于PEDOT：PSS的设备相比，基于TAPC的设备在环境条件下存储时也表现出优异的稳定性，相对湿度较高，范围为50％至85％。

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  • 来源
    《Advanced Functional Materials》 |2017年第31期|1702613.1-1702613.10|共10页
  • 作者

    Yang Liyan; Cai Feilong; Yan Yu; Li Jinghai; Liu Dan; Pearson Andrew J.; Wang Tao;

  • 作者单位

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China|Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China|Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China|Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China|Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China;

    Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China;

    Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England;

    Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China|Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    hole transport; perovskites; planar heterojunction; solar cells; TAPC;

    机译：空穴传输钙钛矿平面异质结太阳能电池TAPC;

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