As2S3 Crystal

SKU:
BLK-AS2S3
Condition:
New
  • As2S3 crystals : Large size high quality 2D crystals - 2Dsemiconductors USA
  • As2S3 crystals : Large size high quality 2D crystals - 2Dsemiconductors USA
  • Photoluminescence spectrum of As2S3
  • As2S3 Crystal
  • Raman spectrum of As2S3 crystals
$590.00
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Description

As2S3 comes in perfect 2:3 stoichiometry. After 250 growth trials in 3 years, perfect stoichirometry, large domain size, minimal defect density (1 parts in 100,000 unit cells), and perfected purity level (99.9998%) are achieved. In the bulk form, arsenic sulfide (As2S3) is a direct gap semiconductor and has band-gap at around 2.5 eV. Similar to molybdenum disulfide, it has layered structure (lamellar) with weak interlayer coupling and can be isolated down to monolayers. The monolayer thickness measures ~0.8 nm and the monolayer As_S_ is waiting to be discovered both experimentally and theoretically. Our crystals are large in size ~8mm and show remarkable PL characteristics. 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.
 
Properties of As2S3 crystals 
 
Space group: P21/c
Layered: Yes / Exfoliates to monolayers
Band gap: ~2.2 eV in bulk
Purity: Semiconductor grade (6N) 99.9999%
Growth technique: Bridgman-Stockbarger
Sample size: ~1 cm
 
Raman spectrum of As2S3 crystals
as2s3-raman-spectrum.png
Photoluminescence spectrum of As2S3
as2s3-pl.png
 
 
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Additional Information

Elements:
As,S
Element:
Arsenic
Element:
Sulfur
Formula:
As2S3
Material class:
M2X3
Material class:
Arsenide
Properties:
Semiconductor
Band gap range:
VIS
Growth method:
Bridgman
Doping:
Undoped
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