A Mobile-Based High Sensitivity On-Field Organophosphorus Compounds Detecting System for IoT-Based Food Safety Tracking

Figure 11

(a) Measurement environment setup. (b) Measured sensitivity of the n-well/p-subphotodiode sensor. (c) SNR of the chip with increasing incident power at 400 nm and a 20 ms exposure time.

(a)

(b)

(c)