Antimony Tin Oxide (ATO) | Transparent Conductive Paths for Antistatic Systems

Direct Answer

What it is

Sb-substituted SnO₂ (rutile-type) nanoparticle powder used as an n-type transparent conductive oxide (TCO).

What it is NOT

Not ITO; not a carbon conductive filler; not a p-type conductor; not a cure-all for conductivity below percolation/contact limits.

Where it fits

Used when conductivity + optical transmission are both required, especially in antistatic coatings and transparent conductive layers; also used as a functional additive in plastics and selected laser-marking and catalyst/plastics workflows (system-dependent).

Boundary condition

Performance is governed by (i) dispersion/agglomeration control, (ii) Sb oxidation state and crystallinity (thermal history), and (iii) humidity-driven surface hydroxylation that can increase resistivity over time.

Antimony tin oxide (ATO) is Sb-doped SnO₂ (a transparent conductive oxide) whose n-type conductivity comes from Sb donor states and carrier transport across particle contacts. It is used when optical transmission must be retained while creating an antistatic/conductive pathway in coatings, films, or composites.