Ho2 S4

semiconductor

· Ho2 S4

Ho₂S₄ is a rare-earth metal sulfide semiconductor compound containing holmium, belonging to the family of lanthanide chalcogenides. This material is primarily of research and developmental interest rather than established industrial production, with potential applications in optoelectronics, photocatalysis, and emerging quantum or photonic device architectures where rare-earth semiconductors offer unique electronic and optical properties distinct from conventional semiconductors.

photocatalytic applicationsoptoelectronic devicesrare-earth semiconductors (research)photonic materials developmentquantum material researchenvironmental remediation (experimental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00960	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.853	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.

Ho2 S4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control