X-ray photoelectron spectroscopy was used to study the reoxidation kinetics of both mechanically and chemically polished as well as freshly fractured SrTiO3 surfaces. X-ray take-off angles were varied in order to resolve surface contributions from those further into the sample. Most surfaces were found to have Sr/Ti ratios that varied significantly from the stoichiometric ratio of 1. Only the oxygen peaks were found to be take-off angle sensitive. We tentatively identify both adsorbed hydroxyl and carbonate O 1s levels as these angle sensitive peaks, indicating that hydroxyl adsorption occurs very rapidly.
A new conductor material has been developed for plastic film LCD applications [1]. This highly durable conductor has very low sheet resistance (under 10 ohms/square), high optical transmission (over 83%), low birefringence (less than 10 nm), good chemical resistance, very low oxygen & moisture permeability, and excellent thermal and environmental stability. An "all dry" digital laser ablation process was also developed for patterning the conductors.
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