Fano-type Effect in Hydrogen-Terminated Pure Nanodiamond - Archive ouverte HAL
Article Dans Une Revue Nano Letters Année : 2022

Fano-type Effect in Hydrogen-Terminated Pure Nanodiamond

Résumé

Two novel properties, unique for semiconductors, a negative electron affinity and a high p-type surface electrical conductivity, were discovered in diamond at the end of the last century. Both properties appear when the diamond surface is hydrogenated. A natural question arises: is the influence of the surface hydrogen on diamond limited only to the electrical properties? Here, for the first time to our knowledge, we observe a transparency peak at 1328 cm–1 in the infrared absorption of hydrogen-terminated pure (undoped) nanodiamonds. This new optical property is ascribed to Fano-type destructive interference between zone-center optical phonons and free carriers (holes) appearing in the near-surface layer of hydrogenated nanodiamond. This work opens the way to explore the physics of electron–phonon coupling in undoped semiconductors and promises the application of H-terminated nanodiamonds as a new optical material with induced transparency in the infrared optical range.

Domaines

Chimie

Dates et versions

hal-03817351 , version 1 (17-10-2022)

Identifiants

Citer

Oleg Kudryavtsev, Rustem Bagramov, Arkady Satanin, Andrey Shiryaev, Oleg Lebedev, et al.. Fano-type Effect in Hydrogen-Terminated Pure Nanodiamond. Nano Letters, 2022, 22 (7), pp.2589-2594. ⟨10.1021/acs.nanolett.1c04887⟩. ⟨hal-03817351⟩
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