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© The Royal Society of Chemistry. Highly conductive indium tin oxide (ITO) nanocrystals and inks have been synthesized by solvothermal dehydration condensation of metal hydroxide in combination with in situ ethanolamine capping. It is found that the addition of ethanolamine can effectively reduce the size of nanocrystals and chemically modify their surfaces. The synthesized ITO nanocrystals can be well dispersed in ethanol with high solid content and the suspension is stable for days. Such a small-molecule capped ITO suspension has been used as a conductive ink to make transparent conductive films by spin coating. Furthermore, a water washing step has been introduced in the ITO film preparation process to improve their conductivity, resulting in a low resistivity of 8.9 × 10-3 Ω cm after 2 hour annealing at 300 °C in a mixed Ar and H2 atmosphere.

Original publication




Journal article


Journal of Materials Chemistry C

Publication Date





11464 - 11470