H2Se

ceramic
· H2Se

Hydrogen selenide (H₂Se) is an inorganic compound that exists primarily as a gas at room temperature, though it can be studied in solid or crystallized forms in specialized research contexts. While classified here as a ceramic, H₂Se is more accurately a semiconductor precursor material valued in thin-film deposition and compound semiconductor manufacturing, where it serves as a chalcogen source for creating selenide-based optoelectronic and photovoltaic devices. Its primary engineering relevance lies in research and industrial fabrication of cadmium selenide (CdSe), zinc selenide (ZnSe), and other II–VI semiconductors used in infrared optics, photodetectors, and emerging solar cell technologies, though handling requires specialized equipment due to its toxicity and volatility.

semiconductor thin-film depositioninfrared optical windowsphotovoltaic researchcompound semiconductor synthesisphotodetector manufacturingMOCVD/CVD precursor

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
70.83
GPa—
Poisson's Ratio(ν)
0.2200
-—
Shear Modulus(G)
-15.70
GPa—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
4.495
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
0.000
eV—
↳
0.000
eV—
Magnetic Moment(μB)
0.000
µB—
Seebeck Coefficient(S)
-2.910
µV/K—
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.8399
eV/atom—
Formation Energy(ΔHf)
0.8390
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

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.