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Carbon Nanotube Based Inverted Flexible Perovskite Solar Cells with All-Inorganic Charge Contacts

机译：具有全无机电荷触点的碳纳米管倒置柔性钙钛矿太阳能电池

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摘要

Organolead halide perovskite solar cells (PSC) are arising as promising candidates for next-generation renewable energy conversion devices. Currently, inverted PSCs typically employ expensive organic semiconductor as electron transport material and thermally deposited metal as cathode (such as Ag, Au, or Al), which are incompatible with their large-scale production. Moreover, the use of metal cathode also limits the long-term device stability under normal operation conditions. Herein, a novel inverted PSC employs a SnO2-coated carbon nanotube (SnO2@CSCNT) film as cathode in both rigid and flexible substrates (substrate/NiO-perovskite/Al2O3-perovskite/SnO2@CSCNT-perovskite). Inverted PSCs with SnO2@CSCNT cathode exhibit considerable enhancement in photovoltaic performance in comparison with the devices without SnO2 coating owing to the significantly reduced charge recombination. As a result, a power conversion efficiency of 14.3% can be obtained on rigid substrates while the flexible ones achieve 10.5% efficiency. More importantly, SnO2@CSCNT-based inverted PSCs exhibit significantly improved stability compared to the standard inverted devices made with silver cathode, retaining over 88% of their original efficiencies after 550 h of full light soaking or thermal stress. The results indicate that SnO2@CSCNT is a promising cathode material for long-term device operation and pave the way toward realistic commercialization of flexible PSCs.
机译：有机油卤化物钙钛矿太阳能电池（PSC）成为下一代可再生能源转换设备的有前途的候选者。当前，倒置的PSC通常使用昂贵的有机半导体作为电子传输材料，并使用热沉积金属作为阴极（例如Ag，Au或Al），这与它们的大规模生产不兼容。此外，金属阴极的使用还限制了正常操作条件下的长期器件稳定性。在本文中，新颖的倒置PSC在刚性和柔性衬底（衬底/ NiO-钙钛矿/ Al2O3-钙钛矿/ SnO2 @ CSCNT-钙钛矿）中均采用SnO2涂层的碳纳米管（SnO2 @ CSCNT）薄膜作为阴极。与具有SnO2涂层的器件相比，具有SnO2 @ CSCNT阴极的反相PSC在光伏性能方面显示出显着增强，这是因为电荷重组明显减少。结果，在刚性基板上可获得14.3％的功率转换效率，而在柔性基板上可获得10.5％的效率。更重要的是，与使用银阴极制成的标准反向器件相比，基于SnO2 @ CSCNT的反向PSC表现出显着改善的稳定性，经过550 h的全光浸泡或热应力后，其原始效率保持超过88％。结果表明，SnO2 @ CSCNT是用于长期器件操作的有希望的阴极材料，并为柔性PSC的实际商业化铺平了道路。

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  • 来源
    《Advanced Functional Materials》 |2017年第42期|1703068.1-1703068.8|共8页
  • 作者

    Luo Qiang; Ma He; Hao Feng; Hou Qinzhi; Ren Jing; Wu Lili; Yao Zhibo; Zhou Yu; Wang Ning; Jiang Kaili; Lin Hong; Guo Zhanhu;

  • 作者单位

    Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Sichuan, Peoples R China;

    Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China|Tsinghua Univ, Collaborat Innovat Ctr Quantum Matter, State Key Lab Low Dimens Quantum Phys, Tsinghua Foxconn Nanotechnol Res Ctr,Dept Phys, Beijing 100084, Peoples R China;

    Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Sichuan, Peoples R China;

    Univ Tennessee, Dept Chem & Biomol Engn, ICL, Knoxville, TN 37996 USA;

    Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China;

    Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China;

    Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Sichuan, Peoples R China|Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China;

    Tsinghua Univ, Collaborat Innovat Ctr Quantum Matter, State Key Lab Low Dimens Quantum Phys, Tsinghua Foxconn Nanotechnol Res Ctr,Dept Phys, Beijing 100084, Peoples R China;

    Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China;

    Univ Tennessee, Dept Chem & Biomol Engn, ICL, Knoxville, TN 37996 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    carbon nanotubes; charge extracting materials; perovskite solar cells; stabilities;

    机译：碳纳米管;电荷提取材料;钙钛矿太阳能电池;稳定性;
  • 入库时间 2022-08-18 01:10:58

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