期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 15, 页码 5033-5036出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b02039
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资金
- European Research Council (ERC) [756225]
- Agence Nationale de la Recherche [H2DH]
- Agence Nationale de la Recherche through grant Nanodose
- Region Ile-de-France in the framework of DIM Nano-K
- French state funds within Investissements d'Avenir programme [ANR-11-IDEX-0004-02]
- French state funds within Cluster of Excellence MATISSE
- NextIR grant - Nexdot
We report the synthesis of nanocrystals with an optical feature in the THz range. To do so, we develop a new synthetic procedure for the growth of HgTe, HgSe, and HgS nanocrystals, with strong size tunability from 5 to 200 nm. This is used to tune the absorption of the nanocrystals all over the infrared range up to terahertz (from 2 to 65 m for absorption peak and even 200/AM for cutoff wavelength). The interest for this procedure is not limited to large sizes since for small objects we demonstrate low aggregation and good shape control (i.e., spherical object) while using nonexpansive and simple mercury halogenide precursors. By integrating these nanocrystals into an electrolyte-gated transistor, we evidence a change of carrier density from p-doped to n-doped as the confinement is vanishing.
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