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High-resolution patterning of colloidal quantum dots via non-destructive, light-driven ligand crosslinking

Author

Listed:
  • Jeehye Yang

    (Sogang University)

  • Donghyo Hahm

    (Sungkyunkwan University (SKKU))

  • Kyunghwan Kim

    (Seoul National University)

  • Seunghyun Rhee

    (Seoul National University)

  • Myeongjae Lee

    (Korea University)

  • Seunghan Kim

    (Sogang University)

  • Jun Hyuk Chang

    (Sungkyunkwan University (SKKU))

  • Hye Won Park

    (Sogang University)

  • Jaehoon Lim

    (Center for Artificial Atoms, Sungkyunkwan University (SKKU))

  • Minkyoung Lee

    (Sogang University)

  • Hyeokjun Kim

    (Sogang University)

  • Joohee Bang

    (POSTECH)

  • Hyungju Ahn

    (POSTECH)

  • Jeong Ho Cho

    (Yonsei University)

  • Jeonghun Kwak

    (Seoul National University)

  • BongSoo Kim

    (Ulsan National Institute of Science and Technology (UNIST))

  • Changhee Lee

    (Seoul National University)

  • Wan Ki Bae

    (Sungkyunkwan University (SKKU))

  • Moon Sung Kang

    (Sogang University)

Abstract

Establishing multi-colour patterning technology for colloidal quantum dots is critical for realising high-resolution displays based on the material. Here, we report a solution-based processing method to form patterns of quantum dots using a light-driven ligand crosslinker, ethane-1,2-diyl bis(4-azido-2,3,5,6-tetrafluorobenzoate). The crosslinker with two azide end groups can interlock the ligands of neighbouring quantum dots upon exposure to UV, yielding chemically robust quantum dot films. Exploiting the light-driven crosslinking process, different colour CdSe-based core-shell quantum dots can be photo-patterned; quantum dot patterns of red, green and blue primary colours with a sub-pixel size of 4 μm × 16 μm, corresponding to a resolution of >1400 pixels per inch, are demonstrated. The process is non-destructive, such that photoluminescence and electroluminescence characteristics of quantum dot films are preserved after crosslinking. We demonstrate that red crosslinked quantum dot light-emitting diodes exhibiting an external quantum efficiency as high as 14.6% can be obtained.

Suggested Citation

  • Jeehye Yang & Donghyo Hahm & Kyunghwan Kim & Seunghyun Rhee & Myeongjae Lee & Seunghan Kim & Jun Hyuk Chang & Hye Won Park & Jaehoon Lim & Minkyoung Lee & Hyeokjun Kim & Joohee Bang & Hyungju Ahn & Je, 2020. "High-resolution patterning of colloidal quantum dots via non-destructive, light-driven ligand crosslinking," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16652-4
    DOI: 10.1038/s41467-020-16652-4
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    Cited by:

    1. Pingping Zhang & Gaoling Yang & Fei Li & Jianbing Shi & Haizheng Zhong, 2022. "Direct in situ photolithography of perovskite quantum dots based on photocatalysis of lead bromide complexes," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Pengwei Xiao & Zhoufan Zhang & Junjun Ge & Yalei Deng & Xufeng Chen & Jian-Rong Zhang & Zhengtao Deng & Yu Kambe & Dmitri V. Talapin & Yuanyuan Wang, 2023. "Surface passivation of intensely luminescent all-inorganic nanocrystals and their direct optical patterning," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Seongheon Baek & Hyeong Woo Ban & Sanggyun Jeong & Seung Hwae Heo & Da Hwi Gu & Wooyong Choi & Seungjun Choo & Yae Eun Park & Jisu Yoo & Moon Kee Choi & Jiseok Lee & Jae Sung Son, 2022. "Generalised optical printing of photocurable metal chalcogenides," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    4. Junho Bae & Yuseop Shin & Hyungyu Yoo & Yongsu Choi & Jinho Lim & Dasom Jeon & Ilsoo Kim & Myungsoo Han & Seunghyun Lee, 2022. "Quantum dot-integrated GaN light-emitting diodes with resolution beyond the retinal limit," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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