As2S5

semiconductor

· As2S5

As₂S₅ is a chalcogenide semiconductor compound composed of arsenic and sulfur, belonging to the family of arsenic sulfides used primarily in infrared optics and photonic applications. This material is valued for its transparency in the mid- to long-wave infrared spectrum and is employed in thermal imaging systems, infrared lenses, and optical windows where conventional glass is opaque. As₂S₅ offers a combination of wide infrared transmission range and reasonable mechanical workability compared to other chalcogenide glasses, making it a practical choice for defense, surveillance, and scientific instrumentation where thermal detection or IR spectroscopy is critical.

infrared optics and lensesthermal imaging systemsIR spectroscopyoptical windows and domesdefense and surveillancephotonic devices

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.480	eV	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

As2S5

Electrical Properties

Regulatory Screening

Environmental

Export Control