Sc4 S2 O4

semiconductor

· Sc4 S2 O4

Sc₄S₂O₄ is a mixed-valence scandium oxysulfide semiconductor compound containing both sulfide and oxide anion components. This material represents an emerging class of ternary semiconductors designed to explore novel band structures and optical properties through controlled incorporation of both oxygen and sulfur ligands around scandium centers. While primarily a research-phase material rather than an established commercial compound, oxysulfides of this type are investigated for potential applications in photocatalysis, optoelectronics, and solid-state devices where tunable electronic properties are desired.

photocatalytic water splittingexperimental semiconductorsoptoelectronic device researchvisible-light photocatalyststhin-film deposition studiesmaterials discovery platforms

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	21,167.4	ksi	—
Shear Modulus(G)	10,371.2	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.085	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-3.277	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.

Sc4 S2 O4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control