A CMOS-based phototransistor for high-sensitivity biochemical detection using absorption photometry


This paper proposes a high-sensitivity biosensing system on the basis of absorption photometry and a phototransistor. Manufactured in a standard 0.35-mum CMOS technology, the phototransistor exhibits a responsivity higher than 1000 A/W for 650-nm light. The TMB/H2O2/HRP method is chosen as a useful platform to determine the amount of various interesting… (More)


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