P4

semiconductor

· P4

P4 is a white or red phosphorus allotrope semiconductor with potential applications in optoelectronics and photovoltaic research. This material belongs to the elemental semiconductor family and is primarily of academic and exploratory interest rather than established industrial production, with ongoing investigation into its band gap properties and light-emission characteristics. Engineers considering P4 should recognize it as an emerging material whose commercial viability and processing methods remain under development, making it relevant mainly for research applications rather than high-volume manufacturing.

experimental optoelectronicsphotovoltaic researchlight-emitting devicessemiconductor physics researchnanostructure fabrication

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	41.22	GPa	—
Shear Modulus(G)	30.63	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.03860	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	0.000	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.

P4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control