Comparison of ceramic, thick-film and thin-film chemical sensors based upon SnO2

Abstract SnO2 is one of the most important inorganic chemical sensor materials. By far the most successful SnO2 devices for practical applications are based upon empirically optimized ceramic and thick-film structures. Nevertheless, our atomistic understanding of sensing mechanisms is still poor, although it is a prerequisite for the ongoing systematic development of thin-film structures using modern thin-film technology. Based upon recent experimental results, current trends are summarized in the development of ceramic, thick-film and thin-film SnO2 sensors.

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