Er2 Se2 I2

semiconductor

· Er2 Se2 I2

Er2Se2I2 is a mixed-halide rare-earth semiconductor compound combining erbium, selenium, and iodine in a layered crystal structure. This is a research-stage material being investigated for potential optoelectronic and photonic applications, particularly in the infrared spectrum where erbium-based semiconductors show promise due to erbium's emission lines relevant to telecommunications wavelengths. The compound's mixed-anion composition offers tunable band structure and potential for engineering carrier transport properties, making it of interest to researchers exploring next-generation photonic devices and quantum materials, though industrial-scale applications remain limited.

infrared optoelectronics (research)photonic integrated circuits (emerging)telecommunications wavelength emitters (development)rare-earth semiconductor researchlayered material physics (fundamental studies)quantum dot precursors (exploratory)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	4,135.2	ksi	—
Shear Modulus(G)	2,666.8	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.194	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.722	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.

Er2 Se2 I2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control