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Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement

Author

Listed:
  • Qi Wang

    (University of North Carolina at Chapel Hill)

  • Xiaoming Wang

    (The University of Toledo)

  • Zhi Yang

    (International Center for Dielectric Research, Xi’an Jiaotong University)

  • Ninghao Zhou

    (University of North Carolina at Chapel Hill)

  • Yehao Deng

    (University of North Carolina at Chapel Hill)

  • Jingjing Zhao

    (University of North Carolina at Chapel Hill)

  • Xun Xiao

    (University of North Carolina at Chapel Hill)

  • Peter Rudd

    (University of North Carolina at Chapel Hill)

  • Andrew Moran

    (University of North Carolina at Chapel Hill)

  • Yanfa Yan

    (The University of Toledo)

  • Jinsong Huang

    (University of North Carolina at Chapel Hill)

Abstract

The efficiencies of green and red perovskite light-emitting diodes (PeLEDs) have been increased close to their theoretical upper limit, while the efficiency of blue PeLEDs is lagging far behind. Here we report enhancing the efficiency of sky-blue PeLEDs by overcoming a major hurdle of low photoluminescence quantum efficiency in wide-bandgap perovskites. Blending phenylethylammonium chloride into cesium lead halide perovskites yields a mixture of two-dimensional and three-dimensional perovskites, which enhances photoluminescence quantum efficiency from 1.1% to 19.8%. Adding yttrium (III) chloride into the mixture further enhances photoluminescence quantum efficiency to 49.7%. Yttrium is found to incorporate into the three-dimensional perovskite grain, while it is still rich at grain boundaries and surfaces. The yttrium on grain surface increases the bandgap of grain shell, which confines the charge carriers inside grains for efficient radiative recombination. Record efficiencies of 11.0% and 4.8% were obtained in sky-blue and blue PeLEDs, respectively.

Suggested Citation

  • Qi Wang & Xiaoming Wang & Zhi Yang & Ninghao Zhou & Yehao Deng & Jingjing Zhao & Xun Xiao & Peter Rudd & Andrew Moran & Yanfa Yan & Jinsong Huang, 2019. "Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13580-w
    DOI: 10.1038/s41467-019-13580-w
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    Cited by:

    1. Tian Tian & Meifang Yang & Yuxuan Fang & Shuo Zhang & Yuxin Chen & Lianzhou Wang & Wu-Qiang Wu, 2023. "Large-area waterproof and durable perovskite luminescent textiles," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Zhenchao Li & Ziming Chen & Zhangsheng Shi & Guangruixing Zou & Linghao Chu & Xian-Kai Chen & Chujun Zhang & Shu Kong So & Hin-Lap Yip, 2023. "Charge injection engineering at organic/inorganic heterointerfaces for high-efficiency and fast-response perovskite light-emitting diodes," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Jong Hyun Park & Chung Hyeon Jang & Eui Dae Jung & Seungjin Lee & Myoung Hoon Song & Bo Ram Lee, 2020. "A-Site Cation Engineering for Efficient Blue-Emissive Perovskite Light-Emitting Diodes," Energies, MDPI, vol. 13(24), pages 1-8, December.
    4. Kang Wang & Zih-Yu Lin & Zihan Zhang & Linrui Jin & Ke Ma & Aidan H. Coffey & Harindi R. Atapattu & Yao Gao & Jee Yung Park & Zitang Wei & Blake P. Finkenauer & Chenhui Zhu & Xiangeng Meng & Sarah N. , 2023. "Suppressing phase disproportionation in quasi-2D perovskite light-emitting diodes," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    5. Yang Bryan Cao & Daquan Zhang & Qianpeng Zhang & Xiao Qiu & Yu Zhou & Swapnadeep Poddar & Yu Fu & Yudong Zhu & Jin-Feng Liao & Lei Shu & Beitao Ren & Yucheng Ding & Bing Han & Zhubing He & Dai-Bin Kua, 2023. "High-efficiency, flexible and large-area red/green/blue all-inorganic metal halide perovskite quantum wires-based light-emitting diodes," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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