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Meeting MS&T23: Materials Science & Technology
Symposium Solid-state Optical Materials and Luminescence Properties
Presentation Title A New Family of Multinary Telluride Nanocrystals for Infrared Applications
Author(s) Soubantika Palchoudhury, Sohini Sengupta, Fajer A Almanea, Venkateswar Rao, Sarah Maglosky
On-Site Speaker (Planned) Soubantika Palchoudhury
Abstract Scope Transition-metal telluride nanocrystals offer a unique platform for realizing more sustainable materials for mid-infrared (mid-IR) and near-infrared (near-IR) laser and bioelectronic applications as compared to existing mercury-based compounds. To this end, a new class of binary and multinary telluride nanocrystals of tunable band gap and emissive properties are synthesized for the first time using a novel hot-injection approach. Multimodal material characterization using photoluminescence (PL), x-ray diffraction (XRD), scanning electron microscopy and energy dispersive x-ray spectroscopy, transmission electron microscopy is also explored with various multinary compositions synthesized (e.g., AuPtTe2, AuSbTe2, AuSnTe2, PtSnTe2, PtSbTe2, InPtTe2, InSbTe2, and InSnTe2) to understand the unique structure-property relationship of these new materials. It is discovered that defects play a major role in the PL of these nanocrystals and the Pt-Sn-based multinary telluride nanocrystals exhibit mid-IR emission. Results from this study will offer key insights on new quantum dots for biomedical devices and infrared lasers.


A New Family of Multinary Telluride Nanocrystals for Infrared Applications
Crystallography, Phase Stability and Luminescence Behavior of Eu-doped Ca4-xSrxLaO(BO3)3 Compounds
D-20: Fabrication and Optical Property Characterization of Silver Thin Film Using Magnetron Sputtering Method
Development of Non-cubic Fluorapatite Laser Ceramics
Fabrication and Optical Properties of Transparent Zinc Gallate Spinel Ceramics
Leveraging Material Microstructure and Linear/Non-linear Absorption for Pulsed Laser Welding of Ceramics
Overview of Optical Materials at NRL
Photoluminescent Behaviors of Mixed Metal Thiophosphates XScP2S6 (X=Ag, Cu) Above and Below Bandgap
Processing and Optical Properties of Noncubic RE-doped Ga2O3 Transparent Ceramics
Study of Garnet Scintillating Single Crystal Fiber Grown by Laser Heated Pedestal Growth Method
Study of Surface Effects in Yb3+ Doped Garnet Nanopowders for Understanding Grain Boundary Processes in Laser Ceramics: Fabrication and Spectroscopic Properties
Surface Morphology and Fracturing of Femtosecond Laser-irradiated Calcium Fluoride
Ultrafast Laser-induced Damage and Non-linear Optical Properties of Metal Thiophosphates
Ultraviolet Excitation of Trivalent Europium in Alumina

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