journal article·2017-06-07

Photoluminescence of Functionalized Germanium Nanocrystals Embedded in Arsenic Sulfide Glass

Tingyi Gu, Jia Gao, Evgeny E. Ostroumov, Hyuncheol Jeong, Fan Wu, Romain Fardel, Nan Yao, Rodney D. Priestley, Gregory D. Scholes, Yueh-Lin Loo, Craig B. Arnold

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Abstract

Embedding metallic and semiconductor nanoparticles in a chalcogenide glass matrix effectively modifies the photonic properties. Such nanostructured materials could play an important role in optoelectronic devices, catalysis, and imaging applications. In this work, we fabricate and characterize germanium nanocrystals (Ge NCs) embedded in arsenic sulfide thin films by pulsed laser ablation in aliphatic amine solutions. Unstable surface termination of aliphatic groups and stable termination by amine on Ge NCs are indicated by Raman and Fourier-transform infrared spectroscopy measurements. A broad-band photoluminescence in the visible range is observed for the amine functionalized Ge NCs. A noticeable enhancement of fluorescence is observed for Ge NCs in arsenic sulfide, after annealing to remove the residual solvent of the glass matrix.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Phase-change materials and chalcogenides · Nonlinear Optical Materials Studies · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electrical and Computer Engineering, University of Delaware, Newark, Delaware 19716, United States

Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States

Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States

Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544, United States

Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States

Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States

Funding

Division of Chemistry · Division of Engineering Education and Centers · Division of Materials Research

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