Fig. 7: Organic semiconductors for biosensing using light.

a Schematics of an OPECT-based biosensor, the charge transfer between CdS QDs and ITO gate electrode and their fabrication method. Reproduced with permission from ref. ³⁷⁵. b Schematic representation of the fabrication of the Pdot@MnO₂ nanocomposite-based sensing platform for GSH detection. Reproduced with permission from ref. ³⁸⁸. c Illustration of functional polymers in photoelectrochemical biosensing. Reproduced with permission from ref. ³⁶⁶. d Layout of the optical microfluidic biosensor with L-PEI modified polythiophene-C70 OPDs, includes a schematic overview of the biosensor including layout details for the OPD, tridimensional scheme, and photographs of device layers. Reproduced with permission from ref. ³⁷⁸.