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Chiral dual-annihilator model for controllable photon upconversion and multi-dimensional optical modulation

Author

Listed:
  • Honghan Ji

    (ZhongGuanCun BeiYiTiao
    Huairou District)

  • Zhiwang Luo

    (ZhongGuanCun BeiYiTiao)

  • Xuefeng Yang

    (ZhongGuanCun BeiYiTiao)

  • Xue Jin

    (ZhongGuanCun BeiYiTiao)

  • Tonghan Zhao

    (ZhongGuanCun BeiYiTiao)

  • Pengfei Duan

    (ZhongGuanCun BeiYiTiao
    Huairou District)

Abstract

Triplet-triplet annihilation photon upconversion seeks efficient conversion of low-energy photons to high-energy emission. However, the triplet-triplet annihilation photon upconversion system faces limitations in emission gamut because efficient triplet-triplet energy transfer between sensitizer and annihilator relies on triplet energy matching, making it challenging to realize multi-channel luminescence and multi-dimensional optical control. Here, to overcome this barrier, we propose a chiral dual-annihilator model, which mitigates the restriction of energy matching and achieves facile manipulation of circularly polarized luminescence through a dual-channel triplet-triplet energy transfer process. A theoretical equation for quantifying the overall triplet-triplet energy transfer efficiency and the energy flow between the sensitizer and two kinds of annihilators is proposed. Its accuracy is demonstrated by fine-controlling the emission bandwidth of triplet-triplet annihilation photon upconversion (average error less than 4.5%) in the experimental aspect. In addition, by introducing chiral liquid crystals, the dual-annihilator model achieves data coding and multi-dimensional optical encryption applications. This dual-annihilator model deepens the understanding of energy flow and lays the foundation for accurate, multidimensional modulation of photon upconversion.

Suggested Citation

  • Honghan Ji & Zhiwang Luo & Xuefeng Yang & Xue Jin & Tonghan Zhao & Pengfei Duan, 2025. "Chiral dual-annihilator model for controllable photon upconversion and multi-dimensional optical modulation," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60290-7
    DOI: 10.1038/s41467-025-60290-7
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