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2D materials

Excitons stabilize above the band gap in bilayer WSe2

Electric field tunable interlayer excitons in a van der Waals bilayer emit at an energy of twice the band gap.

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Fig. 1: Charge-transfer excitons in 2D bilayers.


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Correspondence to Ursula Wurstbauer.

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Saigal, N., Wurstbauer, U. Excitons stabilize above the band gap in bilayer WSe2. Nat. Nanotechnol. 19, 141–142 (2024).

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