A facile and controllable phase-separation route using semiconductor/insulating polymer blends for the fabrication of a microporous semiconductor film is proposed. The microporous film-based gas sensor exhibits excellent selectivity toward ammonia with a detection limit of 0.5 ppm, a high sensitivity of over 800 at 10 ppm NH3, and a response/recovery time of only a few seconds.
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Wang et al. (2016) studied this question.