Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions:1. Instructor of the "Talent Program" of the Chinese Ministry of Education and the China Association for Science and Technology2. Specially appointed expert of Hunan Overseas Chinese Federation3. "Optics" ， editorial board4. Member of American Physical Society, American Society of Electrical and Electronics Engineers, American Chemical Society, Royal Society of Chemistry.
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Impact Factor:12.97
DOI number:10.1021/acs.nanolett.5b04140
Journal:Nano Letters
Abstract:Tunable optical transitions in ultrathin layered 2-dimensional (2D) materials unveil the electronic structures of materials and provide exciting prospects for potential applications in optics and photonics. Here, we present our realization of dynamic optical modulation of layered metal chalcogenide nanoplates using ionic liquid (IL) gating over a wide spectral range. The IL gating significantly increased the tuning range of the Fermi level and, as a result, substantially altered the optical transitions in the nanoplates. Using heavily n-doped Bi2Se3 nanoplates, we substantially modulated the light transmission through the ultrathin layer. A tunable, high-transmission spectral window in the visible to near-infrared region has been observed due to simultaneous shifts of both the plasma edge and absorption edge of the material. On the other hand, optical response of multilayer MoSe2 flakes gated by IL has shown enhanced transmission in both positive and negative biases, which is consistent with their ambipolar electrical behavior. The electrically controlled optical property tuning in metal chalcogenide material systems provides new opportunities for potential applications, such as wide spectral range optical modulators, optical filters, and electrically controlled smart windows with extremely low material consumption.
Co-author:Wang.; Yao Jie.; et al., Kyle.; Xi, YP. Liu(刘艳平); Tom
Indexed by:Journal paper
Document Type:J
Volume:16
Issue:1
Page Number:488-496
Translation or Not:no
Date of Publication:2016-01-10
Included Journals:SCI
Links to published journals:https://pubs.acs.org/doi/10.1021/acs.nanolett.5b04140
