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791555 Sigma-Aldrich

Titania paste, active opaque

Synonym: Dyesol(R) 18NR-AO Titania Paste, TiO2 paste



Related Categories 3D Printing Materials for Research and Development, Alternative Energy, Conductive Inks for 3D Printing, Dye Sensitized Solar Cell (DSSC) Materials, Inks for Printing Applications,
Quality Level   100
description   Crystal Structure: > 99% anatase (analysis carried out on starting material, prior to paste manufacture)
form   paste (cream)
concentration   27.0 wt. %
avg. part. size   20 nm (active)
  ≤450 nm (scatter)
viscosity   40000-55000 mPa.s(20 °C) (Analysis carried out with 20mm 4 degree cone/plate; 40 s-1))
InChI   1S/2O.Ti


General description

Titania paste, active opaque is a precursor for titania that has anatase particles and larger sized anatase scatter particles, used to form a white coating on the fluorine doped tin oxide glass (FTO) substrate. It is used in a variety of electrochemical devices to improve electron mobility and power efficiency.


Titania paste has a hierarchical pore structure which allows non-agglomerated loading on nanomaterials for the fabrication of dye sensitized solar cells with higher light absorption.

Use Active Opaque Titania Paste in applications that do not require transparency.
The dispersed scattering particles in Active Opaque Titania Paste formulation lead to enhanced DSC performance through the large surface/volume ratio of the sintered film.
Active Opaque Titania Paste has a blend of active anatase particles (~20nm) and larger anatase scatter particles (up to 450nm).
After drying; this paste must be fired at or above 500°C. This results in an opaque sintered layer with film thickness of 7-8μm for one printed layer and ~15μm for two layers; when using a 48T mesh.
This paste exhibits optimal rheological properties that provide good surface uniformity and contain organic binders specially formulated to provide versatile porosity suitable for a range of dye/electrolyte systems.
Storage: Store in the dark at 20°C


5, 20 g in glass bottle

Legal Information

Product of Dyesol® exclusive supplier of Sun2 products under license from EPFL. Dyesol® is a registered trademark of Dyesol Ltd

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Target organs 
Respiratory system
NA 1993 / PGIII
WGK Germany 


Certificate of Analysis (COA)

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Protocols & Articles


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Nanoparticle-based Zinc Oxide Electron Transport Layers for Printed Organic Photodetectors

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