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Water poisoning, the dependence of gas‐sensing characteristics on moisture, in oxide chemiresistors remains a long‐standing challenge. Various approaches are explored to mitigate water poisoning but they are often accompanied by significant deterioration of sensing capabilities such as gas response deterioration, gas selectivity alteration, and sensor resistance increase up to unmeasurable levels...
In article number 2007895, Jong‐Heun Lee and co‐workers show that the coating of a moisture‐blocking Tb4O7 overlayer provides a general and facile solution to mitigate the water poisoning effect of oxide semiconductor gas sensors without significant alteration of the gas‐sensing characteristics such as gas response, selectivity, and sensor resistance, enabling the design of reliable gas sensors and...
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