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Arsenium Sulfide Crystal | As2S3 | CAS 1303-33-9


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Arsenium  Sulfide (As2S3) Crystal is a direct gap semiconductor and has a band gap at around 2.5 eV.  Heeger Materials can provide the best Arsenium Sulfide Crystal (As2S3) with a purity of 99.99%, 99.999%, and 99.9999% in size of lump at a competitive price. Our crystals are large in size ~8mm and show remarkable PL characteristics. 

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Data sheet

Purity99.99%-99.9999% (4N-6N)
ProductArsenium sulfide

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Arsenium Sulfide (As2S3) is similar to molybdenum disulfide, it has a layered structure (lamellar) with weak interlayer coupling and can be isolated down to monolayers. Our crystals are grown by state-of-the-art growth techniques over 8 weeks and show high crystallinity. Raman spectrum displays very sharp and clear modes with FWHM less than 6cm-1. As2S3 comes ready for exfoliation and is ideal for 2D research.

Arsenium Sulfide Crystal | As2S3

  • Space group: P21/c
  • Layered: Yes / Exfoliates to monolayers
  • Bandgap: ~2.2 eV in bulk
  • Purity: Semiconductor grade (6N) 99.9999%
  • Growth technique: Bridgman-Stockburger

High-purity and ultra-high-purity Gallium sulfide (Ga2S3) materials are crucial components for the research, development, and production of advanced technologies that require optimum properties, performance, and quality.

Arsenium Sulfide (As2S3) Crystal Specifications


HM-As2S3 Crystal

Growth Technique


Band gap

~2.2 eV in bulk


~8 mm


99.99% - 99.9999% (4N-6N)

Arsenium Sulfide (As2S3) Crystal Raman Spectrum

Arsenium Sulfide (As2S3) Crystal Raman Spectrum

Arsenium Sulfide (As2S3) Crystal Photoluminescence Spectrum

Arsenium Sulfide (Ar2S3) Crystal Photoluminescence Spectrum


  • Used in the production of optical fibers and optical devices.
  • Used as an additive in coatings.
  • Used as a raw material for electronic and semiconductor materials.


Arsenium Sulfide (As2S3) is carefully packaged in carton boxes with foam protection to minimize damage during storage and transportation and to preserve the quality of our products in their original condition. The vacuum packing is 1kg/bag, 25kg/barrel, or based on specific requirements.

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