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Electroluminescence and Plasmon-Assisted Directional Photoluminescence from 2D HgTe Nanoplatelets

Journal Article · · Journal of Physical Chemistry. C
 [1];  [2];  [3];  [4];  [5];  [5];  [5];  [5];  [6];  [7];  [8];  [9];  [5];  [1]
  1. Paris Sciences et Lettres (PSL) University (France); Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS) (France)
  2. Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS) (France); Synchrotron SOLEIL (France)
  3. Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS) (France); Paris Sciences et Lettres (PSL) University (France)
  4. Sorbonne Univ., Paris (France)
  5. Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS) (France)
  6. Centre National de la Recherche Scientifique (CNRS) (France); Univ. Paris-Saclay (France)
  7. Paris Sciences et Lettres (PSL) University (France); Centre National de la Recherche Scientifique (CNRS) (France); Sorbonne Univ., Paris (France); Université Paris Cité (France)
  8. Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM)
  9. Université Paris Cité (France); Centre National de la Recherche Scientifique (CNRS) (France)

In the visible range, 2D nanoplatelets (NPLs) have brought significant benefits compared to their 0D counterpart with an inherently anisotropic emission, a narrower photoluminescence (PL) signal, and new degrees of freedom to design heterostructures. Compared to the properties of cadmium chalcogenide NPLs in the visible, similar research is still mostly lacking in the infrared, in spite of existing synthetic paths to obtain narrow band gap semiconductors in 2D colloidal form. Here, in this paper, we focus on 2D HgTe NPLs and show how their PL can be stabilized through the proper choice of surface chemistry. We then demonstrate two important steps toward bright infrared light emitting diodes (LEDs) which are (i) the coupling to a plasmonic grating to control the magnitude and spatial direction of the PL signal and (ii) the observation of electroluminescence at 1300 nm, which is near telecom wavelength.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2404870
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 30 Vol. 127; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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