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Selective manipulation of electronically excited states through strong light–matter interactions

Author

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  • Kati Stranius

    (University of Gothenburg)

  • Manuel Hertzog

    (University of Gothenburg)

  • Karl Börjesson

    (University of Gothenburg)

Abstract

Strong coupling between light and matter leads to the spontaneous formation of hybrid light–matter states, having different energies than the uncoupled states. This opens up for new ways of modifying the energy landscape of molecules without changing their atoms or structure. Heavy metal-free organic light emitting diodes (OLED) use reversed intersystem crossing (RISC) to harvest light from excited triplet states. This is a slow process, thus increasing the rate of RISC could potentially enhance OLED performance. Here we demonstrate selective coupling of the excited singlet state of Erythrosine B without perturbing the energy level of a nearby triplet state. The coupling reduces the triplet–singlet energy gap, leading to a four-time enhancement of the triplet decay rate, most likely due to an enhanced rate of RISC. Furthermore, we anticipate that strong coupling can be used to create energy-inverted molecular systems having a singlet ground and lowest excited state.

Suggested Citation

  • Kati Stranius & Manuel Hertzog & Karl Börjesson, 2018. "Selective manipulation of electronically excited states through strong light–matter interactions," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04736-1
    DOI: 10.1038/s41467-018-04736-1
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    Cited by:

    1. Minjung Son & Zachary T. Armstrong & Ryan T. Allen & Abitha Dhavamani & Michael S. Arnold & Martin T. Zanni, 2022. "Energy cascades in donor-acceptor exciton-polaritons observed by ultrafast two-dimensional white-light spectroscopy," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Ruixiang Chen & Ningning Liang & Tianrui Zhai, 2024. "Dual-color emissive OLED with orthogonal polarization modes," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    3. Fan Wu & Daniel Finkelstein-Shapiro & Mao Wang & Ilmari Rosenkampff & Arkady Yartsev & Torbjörn Pascher & Tu C. Nguyen- Phan & Richard Cogdell & Karl Börjesson & Tönu Pullerits, 2022. "Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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