Cs2Te

semiconductor

· Cs2Te

Cesium telluride (Cs₂Te) is a binary compound semiconductor composed of cesium and tellurium, belonging to the family of alkali metal chalcogenides. This material is primarily of research and specialized industrial interest, valued for its photoemissive properties and use in vacuum optoelectronic devices where efficient electron emission from photon absorption is critical.

photomultiplier tubesimage intensifiersultraviolet detectorsvacuum photodiodesnight vision systemsresearch optoelectronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	3.500	eV	—
Dielectric Constant (Relative Permittivity)(εr)	6.792 range 4.318–9.266median of 2 measurements	-	—

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.

Cs2Te

Electrical Properties

Regulatory Screening

Environmental

Export Control