Journal Articles Advanced Optical Materials Year : 2025

Enhancing the Infrared Emission from Silver Chalcogenide Quantum Dots through Microcavity Coupling

Erwan Bossavit
Dario Mastrippolito
Huichen Zhang
Tommaso Gemo
Albin Colle
Adrien Khalili
Muchuan Hua
Mathieu Silly
Debora Pierucci
Benjamin Diroll
Aloyse Degiron

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, we focus on silver chalcogenides, which, thanks to a combination of inter-and intraband transitions, appear quite 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, we demonstrate that a strong control over the PL spectrum can be obtained through integration into a dielectric cavity which 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 LEDs.
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Year Month Jours
Avant la publication
Thursday, July 17, 2025
Embargoed file
Thursday, July 17, 2025
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hal-04894981 , version 1 (17-01-2025)

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Lina Makke, Erwan Bossavit, Dario Mastrippolito, Andrei Shcherbakov, Mariarosa Cavallo, et al.. Enhancing the Infrared Emission from Silver Chalcogenide Quantum Dots through Microcavity Coupling. Advanced Optical Materials, 2025, ⟨10.1002/adom.202402747⟩. ⟨hal-04894981⟩
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