Ca4 Te8 O20

semiconductor

· Ca4 Te8 O20

Ca₄Te₈O₂₀ is an inorganic oxide semiconductor compound containing calcium and tellurium, belonging to the family of mixed-metal tellurite ceramics. This material is primarily of research interest for optoelectronic and photonic applications, where tellurite-based compounds are valued for their wide bandgaps, optical transparency in specific wavelengths, and potential use in solid-state devices; it represents an emerging class of materials being investigated for next-generation semiconducting oxides rather than a mature commercial compound.

research photonicsoptical semiconductorstellurite ceramicswide-bandgap semiconductorsemerging optoelectronicsadvanced ceramics R&D

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	4,958.7	ksi	—
Shear Modulus(G)	3,172.4	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	3.293	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.776	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.

Ca4 Te8 O20

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control