Pr4 S4 O4

semiconductor

· Pr4 S4 O4

Pr4S4O4 is a rare-earth oxysulfide semiconductor compound combining praseodymium with sulfur and oxygen, belonging to the family of mixed-anion semiconductors that are primarily of research interest. This material and related rare-earth chalcogenides are being investigated for optoelectronic and photonic applications where their tunable bandgap and luminescent properties could enable new device architectures; however, it remains largely experimental with limited commercial deployment compared to conventional semiconductors like silicon or gallium arsenide.

Photonic researchRare-earth semiconductorsOptoelectronic devicesMaterials researchEmerging semiconductors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	77.28	GPa	—
Shear Modulus(G)	41.45	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.058	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-2.674	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.

Pr4 S4 O4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control