Abstract Herein we report on the growth of layered BiI 3 nanoplates materials and their sensing properties of NO 2 under violet light illumination. The BiI 3 nanoplates were grown… Click to show full abstract
Abstract Herein we report on the growth of layered BiI 3 nanoplates materials and their sensing properties of NO 2 under violet light illumination. The BiI 3 nanoplates were grown on a glass substrate using a chemical vapor deposition (CVD) system, with an average thickness of 30 nm and the lateral dimension of 150–170 nm. Their photo-induced sensing response for 20 ppm NO 2 and the response/recovery time are approximately ~11.2% and 18/36 s, respectively. The limit of detection (LOD) of NO 2 for the BiI 3 sensor is 25 ppb. A possible light-induced gas-sensing mechanism was proposed and investigated for the BiI 3 nanoplate.
               
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