DOE OSTI · 3003859
Enhancing the Infrared Emission from Silver Chalcogenide Quantum Dots Through Microcavity Coupling
Abstract
Nanocrystals (NCs) appear as a promising platform for cost effective infrared optoelectronics, while offering a simplified coupling to the CMOS platform. However, this perspective is slowed down by toxicity concerns, the most effective materials being based on Pb and Hg. There is currently a large effort to bring forth new platforms that are active in the infrared with a reduced heavy metal content. Here, in this study, the focus is on silver chalcogenides, which, thanks to a combination of inter‐ and intraband transitions, is suited to cover both short and mid wave infrared ranges. However, this material being less mature, the achieved photoluminescence (PL) appears quite broad, which is problematic for device integration. Here, it is demonstrated that a strong control over the PL spectrum can be obtained through integration into a dielectric cavity that magnifies the electric field by a factor 20 and narrows the PL full width at half maximum down to 15 nm for an emission at telecom wavelength. The PL is also highly directional to avoid most waveguiding effects which is of utmost interest for enhancing the efficiency of NC‐based light emitting diodes.
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Makke, Lina [ESPCI Paris - PSL (France); Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS), Paris (France). Laboratoire de Physique et d’Etude des Matériaux (LPEM)], Bossavit, Erwan [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP); Synchrotron SOLEIL, Saint-Aubin (France)] (ORCID:0000000160883309), Mastrippolito, Dario [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0000000163607254), Shcherbakov, Andrei [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0009000635120725), Cavallo, Mariarosa [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0000000287685545), Zhang, Huichen [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0000000153460148), Gemo, Tommaso [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0009000583999706), Colle, Albin [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:000900090997960X), Khalili, Adrien [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0000000156859963), Hua, Muchuan [Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM)] (ORCID:0000000332185591), Lafosse, Xavier [Centre National de la Recherche Scientifique (CNRS), Palaiseau (France). Centre de Nanosciences et de Nanotechnologies (C2N); Univ. Paris-Saclay, Palaiseau (France)] (ORCID:0000000278077564), Xu, Xiang Zhen [ESPCI Paris - PSL (France); Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS), Paris (France). Laboratoire de Physique et d’Etude des Matériaux (LPEM)], Silly, Mathieu G. [Synchrotron SOLEIL, Saint-Aubin (France)] (ORCID:0000000203028442), Pierucci, Debora [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0000000187511994), Lhuillier, Emmanuel [Sorbonne Univ., Paris (France). Institut des NanoSciences de Paris (INSP)] (ORCID:0000000325821422), Diroll, Benjamin T. [Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM)] (ORCID:0000000334880213), Degiron, Aloyse [Univ. Paris Cité (France); Centre National de la Recherche Scientifique (CNRS), Paris (France). Laboratoire Matériaux et Phénomènes Quantiques (MPQ)] (ORCID:0000000325244848), Ithurria, Sandrine [ESPCI Paris - PSL (France); Sorbonne Univ., Paris (France); Centre National de la Recherche Scientifique (CNRS), Paris (France). Laboratoire de Physique et d’Etude des Matériaux (LPEM)] (ORCID:0000000247339883). 2025-01-17. Enhancing the Infrared Emission from Silver Chalcogenide Quantum Dots Through Microcavity Coupling. https://doi.org/10.1002/adom.202402747
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