Th2 As2 Se2

semiconductor

· Th2 As2 Se2

Th₂As₂Se₂ is a ternary chalcogenide semiconductor compound combining thorium, arsenic, and selenium—a research-phase material representing an emerging class of heavy-element semiconductors. While not yet established in mainstream industrial production, this compound family is under investigation for specialized optoelectronic and radiation-detection applications where the high atomic mass of thorium may enable strong photon absorption or scintillation properties. Engineers would consider this material primarily in exploratory device development rather than conventional applications, as its synthesis, scalability, and performance characteristics relative to established alternatives (such as CdTe or HgCdTe detectors) remain subject to active research.

radiation detection (exploratory)infrared optoelectronics (research)high-Z semiconductor devicesscintillation materials (developmental)photon absorption applicationsmaterials research prototyping

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00450	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.495	eV/atom	—

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.

Th2 As2 Se2

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control