W1 O3
semiconductor· W1 O3
Tungsten trioxide (WO₃) is a semiconductor compound belonging to the transition metal oxide family, characterized by a monoclinic crystal structure and moderate mechanical stiffness. It is primarily used in electrochromic devices, gas sensing applications, and photocatalytic processes, where its bandgap and ion-intercalation properties enable switchable optical and catalytic functionality. Engineers select WO₃ for applications requiring color-changing windows, smart glass, and environmental monitoring sensors due to its reversible electrochemical behavior and stability; it is also investigated for photocatalytic water splitting and air purification in research contexts.
electrochromic smart windowsgas sensorsphotocatalytic applicationsoptical switching devicesenvironmental sensingresearch materials
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | Pa | — | — | |
Shear Modulus(G) | — | Pa | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.