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首页> 外文期刊>RSC Advances >Organic-inorganic hybrid perovskite quantum dot light-emitting diodes using a graphene electrode and modified PEDOT:PSS
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Organic-inorganic hybrid perovskite quantum dot light-emitting diodes using a graphene electrode and modified PEDOT:PSS

机译：使用石墨烯电极和改进的PEDOT的有机 - 无机杂交钙钛矿量子点发光二极管：PSS

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摘要

Perovskite quantum dot (PQD) light-emitting diodes (LEDs) have rapidly developed in the past several years due to the excellent optoelectronic properties of lead halide perovskites. However, PQD LEDs using graphene electrodes have not been reported despite their huge potential for applications in flexible displays and lighting sources. Herein, graphene was first used as the electrode of PQD LEDs. To overcome graphene's limitations such as hydrophobicity and graphene-induced film nonuniformity, the modification of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) with Triton X-100 and dimethyl sulfoxide (DMSO) codoping was reported, which not only improved the wettability of the graphene surface and the sequent film quality, but also reduced the dissolution of the PQD solvent to the bottom poly[N,N '-bis(4-butylphenyl)-N,N '-bis(phenyl)-benzidine] and PEDOT:PSS. More importantly, the synergistic effect of Triton X-100 and DMSO altered the PEDOT:PSS morphology from a coiled structure to a nanofibril conductive network, sufficiently enhancing the electrical conductivity of PEDOT:PSS. With this modification strategy, green PQD LEDs with CH3NH3PbBr3 emission layers were successfully fabricated on graphene anodes, with 3.7- and 4.4-fold enhancements in luminance and current efficiency, respectively, compared to those of their counterparts without PEDOT:PSS modification. The film modification strategy and graphene-based PQD LEDs in this work are expected to shed light on the further design and manufacture of flexible highly efficient PQD display and lighting devices.
机译：由于铅卤化铅钙锌矿的优异的光电性能，佩洛斯库茨量子点（PQD）发光二极管（LED）在过去几年中迅速发展。然而，尽管它们在柔性显示器和照明源中的应用潜力巨大潜力，但是尚未报告使用石墨烯电极的PQD LED。这里，首先用作PQD LED的电极的石墨烯。为了克服石墨烯的限制，例如疏水性和石墨烯诱导的膜不均匀性，报道了聚（3,4-亚乙基氧基噻吩）：聚（苯乙烯磺酸盐）（PEDOT）（PEDOT）（PEDOT：PSS）和二甲基砜（DMSO）编码的改性，这不仅改善了石墨烯表面的润湿性和序列膜质量，而且还将PQD溶剂的溶解降低到底部聚[n，n'-bis（4-丁基苯基）-n，n'-bis（苯基） ）-benzidine]和pedot：pss。更重要的是，Triton X-100和DMSO的协同作用改变了PEDOT：PSS形态与卷绕结构到纳米纤维导电网络，充分提高了PETOT的电导率：PSS。利用这种修改策略，与CH3NH3PBBR3发射层的绿色PQD LED在石墨烯阳极上成功制造，与没有PEDOT的对应物相比，亮度和电流效率的增强分别为3.7-和4.4倍：PSS改性。这项工作中的薄膜修改策略和基于石墨烯的PQD LED将在柔性高效PQD显示器和照明装置的进一步设计和制造上阐明光线。

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  • 来源
    《RSC Advances》 |2019年第36期|共10页
  • 作者

    Zhang Qing; Yu Hongtao; Liu Ziwei; Lu Yao; Ye Danqing; Qian Jie; Wu Yanan; Gu Wenwen; Ma Ben; Zhang Liuquan; Duan Yu; Liu Lihui; Cao Kun; Chen Shufen; Huang Wei;

  • 作者单位

    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

    Informat Displays 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

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    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

    Informat Displays 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

    Informat Displays 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

    Informat Displays 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

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    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

    Informat Displays 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

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    Nanjing Univ Posts &

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    Nanjing Univ Posts &

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    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

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    Nanjing Univ Posts &

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    Nanjing Univ Posts &

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    Nanjing Univ Posts &

    Telecommun Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Inst Adv Mat Key Lab Organ Elect &

    Informat Displays 9 Wenyuan Rd Nanjing 210023 Jiangsu Peoples R China;

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