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Perovskite semiconductors for room-temperature exciton-polaritonics


Lead-halide perovskites are generally excellent light emitters and can have larger exciton binding energies than thermal energy at room temperature, exhibiting great promise for room-temperature exciton-polaritonics. Rapid progress has been made recently, although challenges and mysteries remain in lead-halide perovskite semiconductors to push polaritons to room-temperature operation. In this Perspective, we discuss fundamental aspects of perovskite semiconductors for exciton-polaritons and review the recent rapid experimental advances using lead-halide perovskites for room-temperature polaritonics, including the experimental realization of strong light–matter interaction using various types of microcavities as well as reaching the polariton condensation regime in planar microcavities and lattices.

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Fig. 1: Morphology and optical properties of lead-halide perovskites.
Fig. 2: Exciton-polaritons in perovskite photonic structures.
Fig. 3: Exciton-polariton condensates in lead-halide perovskite microcavities.


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Q.X. gratefully acknowledges the funding support from National Natural Science Foundation of China (no. 12020101003) and a Tsinghua University start-up grant. T.C.H.L. gratefully acknowledges the Singapore Ministry of Education via the AcRF Tier 3 programme ‘Geometrical Quantum Materials’ (MOE2018-T3-1-002) and Tier 2 grants (MOE2019-T2-1-004 and MOE2018-T2-2-068). E.D. and H.S.N. acknowledge financial support from Agence Nationale de la Recherche, programmes ANR-18-CE24-0016 (EMIPERO) and ANR-17-CE24-0020 (POPEYE). H.S.N. is a junior member of the Institut Universitaire de France and acknowledges the IDEXLYON from Université de Lyon, Scientific Breakthrough project TORE within the Programme Investissements d’Avenir (ANR-19-IDEX-0005). Q.Z. gratefully acknowledges the funding support from National Natural Science Foundation of China (no. 52072006). D.S. gratefully acknowledges the project PRIN Interacting Photons in Polariton Circuits—INPhoPOL (MIUR, 2017P9FJBS_001) “Accordo bilaterale CNR/RFBR (Russia) - triennio 2021–2023”.

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Correspondence to Daniele Sanvitto or Qihua Xiong.

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Su, R., Fieramosca, A., Zhang, Q. et al. Perovskite semiconductors for room-temperature exciton-polaritonics. Nat. Mater. 20, 1315–1324 (2021).

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