W3 O9 — Properties & Data | MatWorld

W3 O9

semiconductor

· W3 O9

W₃O₉ is a tungsten oxide semiconductor compound belonging to the family of mixed-valence tungsten oxides, which exhibit interesting electrochromic, photocatalytic, and electronic properties. This material is primarily investigated in research and emerging applications rather than as an established commercial product, with potential in photoelectrochemical water splitting, gas sensing, and smart windows due to its bandgap characteristics and surface reactivity.

photoelectrochemical water splittinggas sensing deviceselectrochromic smart windowsphotocatalytic applicationsresearch/development stage materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00260	eV	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-2.334	eV/atom	DFT · OptB88vdW

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

W3 O9

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control