CsAu

semiconductor

· CsAu

CsAu is an intermetallic compound composed of cesium and gold, belonging to the class of metallic semiconductors or semimetals with potential electronic functionality. This material is primarily of research interest rather than established in commercial engineering applications, studied for its electronic band structure and potential use in advanced materials for thermoelectric or optoelectronic devices. The compound's notable feature is the combination of a highly electropositive alkali metal (cesium) with a noble metal (gold), creating unusual electronic properties that distinguish it from conventional semiconductors.

experimental semiconductorsthermoelectric researchintermetallic compoundselectronic materials developmentmaterials physics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Band Gap(Eg)	2.300	eV	—
Dielectric Constant (Relative Permittivity)(εr)2 entries	10.21	-	—
↳	8.134 range 6.328–9.940median of 2 measurements	-	—
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	—
Total Dielectric Tensor(ε)	Matrix (redacted)	-	—

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, or test environment.

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.

CsAu

Electrical Properties

Regulatory Screening

Environmental

Export Control