Image of 2-dimensional chalcogenide glass held upright by gloved hand to display the coating.

Chalcogenides are materials that contain one or more chalcogen element, typically sulfides, selenides, and tellurides (S, Se, Te). Chalcogenides are binary compounds consisting of at least one chalcogen anion and an additional electropositive element, whereas dichalcogenides contain two different chalcogens. These materials, available in amorphous, crystalline and nanocrystalline forms, are noted for their superior electronic, optical and semiconducting properties. Whether your research focuses on sensors, optoelectronics, photovoltaics or biomedical applications, we offer a variety of grades and purities of compounds to optimally fit your needs.


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Transition-Metal Chalcogenides and Dichalcogenides

Transition-metal chalcogenides (TMCs) are ultrathin materials with tunable electronic and optoelectronic properties, indirect bandgaps, and enhanced stability. TMCs are semiconductors with the type MX, while transition metal dichalcogenides (TMDCs or TMDs) are of the type MX2 in which M is a transition metal and X is a chalcogen atom. These two-dimensional (2D) materials have an electronic bandgap making them useful in a wide range of fields, including battery, solar cell, flexible electronics, fiber optics, energy storage, and catalysis. We offer graphene-like 2D TMDCs, such as molybdenum disulfide (MoS2) and tungsten disulfide (WS2), for applications in field-effect transistors (FETs) and monolayered photoluminescence properties for thin films.

Chalcogenide Quantum Dots

Chalcogenide quantum dots are semiconductor nanoparticles with excellent quantum confinement effects, surface-volume ratio, solubility, edge-effects, tunable photoluminescence, and fluorescence properties. We offer molybdenum disulfide (MoS2) and tungsten disulfide (WS2) quantum dots with high quality, easy functionalization, and enhanced photostability. These materials impart a new dimension to standard 2D nanosheets, enabling applications in energy, batteries, and imaging.