IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-38086-4.html
   My bibliography  Save this article

High-efficiency and stable short-delayed fluorescence emitters with hybrid long- and short-range charge-transfer excitations

Author

Listed:
  • Guoyun Meng

    (Tsinghua University)

  • Hengyi Dai

    (Tsinghua University)

  • Qi Wang

    (Tsinghua University)

  • Jianping Zhou

    (Tsinghua University)

  • Tianjiao Fan

    (Tsinghua University)

  • Xuan Zeng

    (Tsinghua University)

  • Xiang Wang

    (Tsinghua University)

  • Yuewei Zhang

    (Tsinghua University
    Tsinghua University)

  • Dezhi Yang

    (South China University of Technology)

  • Dongge Ma

    (South China University of Technology)

  • Dongdong Zhang

    (Tsinghua University
    Tsinghua University)

  • Lian Duan

    (Tsinghua University
    Tsinghua University)

Abstract

The pursuit of ideal short-delayed thermally activated delayed fluorescence (TADF) emitters is hampered by the mutual exclusion of a small singlet-triplet energy gap (ΔEST) and a large oscillator strength (f). Here, by attaching an multiresonance-acceptor onto a sterically-uncrowded donor, we report TADF emitters bearing hybrid electronic excitations with a main donor-to-acceptor long-range (LR) and an auxiliary bridge-phenyl short-range (SR) charge-transfer characters, balancing a small ΔEST and a large f. Moreover, the incorporation of dual equivalent multiresonance-acceptors is found to double the f value without affecting the ΔEST. A large radiative decay rate over an order of magnitude higher than the intersystem crossing (ISC) rate, and a decent reverse ISC rate of >106 s−1 are simultaneously obtained in one emitter, leading to a short delayed-lifetime of ~0.88 μs. The corresponding organic light-emitting diode exhibits a record-high maximum external quantum efficiency of 40.4% with alleviated efficiency roll-off and extended lifetime.

Suggested Citation

  • Guoyun Meng & Hengyi Dai & Qi Wang & Jianping Zhou & Tianjiao Fan & Xuan Zeng & Xiang Wang & Yuewei Zhang & Dezhi Yang & Dongge Ma & Dongdong Zhang & Lian Duan, 2023. "High-efficiency and stable short-delayed fluorescence emitters with hybrid long- and short-range charge-transfer excitations," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38086-4
    DOI: 10.1038/s41467-023-38086-4
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-38086-4
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/s41467-023-38086-4?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. M. A. Baldo & D. F. O'Brien & Y. You & A. Shoustikov & S. Sibley & M. E. Thompson & S. R. Forrest, 1998. "Highly efficient phosphorescent emission from organic electroluminescent devices," Nature, Nature, vol. 395(6698), pages 151-154, September.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Jaewook Kim & Joonghyuk Kim & Yongjun Kim & Youngmok Son & Youngsik Shin & Hye Jin Bae & Ji Whan Kim & Sungho Nam & Yongsik Jung & Hyeonsu Kim & Sungwoo Kang & Yoonsoo Jung & Kyunghoon Lee & Hyeonho C, 2023. "Critical role of electrons in the short lifetime of blue OLEDs," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Xiao Tan & Dehai Dou & Lay-Lay Chua & Rui-Qi Png & Daniel G. Congrave & Hugo Bronstein & Martin Baumgarten & Yungui Li & Paul W. M. Blom & Gert-Jan A. H. Wetzelaer, 2024. "Inverted device architecture for high efficiency single-layer organic light-emitting diodes with imbalanced charge transport," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    3. Pode, Ramchandra, 2020. "Organic light emitting diode devices: An energy efficient solid state lighting for applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    4. Christian Hintze & Tobias O Morgen & Malte Drescher, 2017. "Heavy-atom effect on optically excited triplet state kinetics," PLOS ONE, Public Library of Science, vol. 12(11), pages 1-13, November.
    5. Nan Zhang & Lei Qu & Shuheng Dai & Guohua Xie & Chunmiao Han & Jing Zhang & Ran Huo & Huan Hu & Qiushui Chen & Wei Huang & Hui Xu, 2023. "Intramolecular charge transfer enables highly-efficient X-ray luminescence in cluster scintillators," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    6. Xiaokang Yao & Yuxin Li & Huifang Shi & Ze Yu & Beishen Wu & Zixing Zhou & Chifeng Zhou & Xifang Zheng & Mengting Tang & Xiao Wang & Huili Ma & Zhengong Meng & Wei Huang & Zhongfu An, 2024. "Narrowband room temperature phosphorescence of closed-loop molecules through the multiple resonance effect," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    7. Yusuke Kawashima & Tomoyuki Hamachi & Akio Yamauchi & Koki Nishimura & Yuma Nakashima & Saiya Fujiwara & Nobuo Kimizuka & Tomohiro Ryu & Tetsu Tamura & Masaki Saigo & Ken Onda & Shunsuke Sato & Yasuhi, 2023. "Singlet fission as a polarized spin generator for dynamic nuclear polarization," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    8. Yan Fu & Hao Liu & Ben Zhong Tang & Zujin Zhao, 2023. "Realizing efficient blue and deep-blue delayed fluorescence materials with record-beating electroluminescence efficiencies of 43.4%," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38086-4. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.