Tl4 Bi4 P8 S28

semiconductor

· Tl4 Bi4 P8 S28

Tl₄Bi₄P₈S₂₈ is a quaternary chalcogenide semiconductor compound combining thallium, bismuth, phosphorus, and sulfur—a class of materials known for ionic-covalent bonding and tunable electronic properties. This is a research-stage material studied primarily in the context of advanced semiconductors and solid-state physics; compounds in this family are investigated for potential applications in optoelectronics, thermoelectrics, and radiation detection where layered or complex crystal structures can offer band-gap engineering advantages over conventional semiconductors.

experimental semiconductorsthermoelectric materials researchoptoelectronic devices developmentradiation detectorssolid-state physics researchchalcogenide photonics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	26.76	GPa	—
Shear Modulus(G)	12.35	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.207	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.3750	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.

Tl4 Bi4 P8 S28

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control