Photodetector and Photosensor Integration with Printed Photopolymers: Spectral Response, Encapsulation and Signal Stability

Printed photopolymers can serve as structural carriers, optical waveguides, encapsulants and alignment features around photodetectors, while additive processes can also fabricate active polymer photodetectors directly. The resulting sensor response is governed by more than detector material: coupling geometry, printed optical loss, spectral filtering, interfacial contamination, encapsulation and environmental drift can all change the signal. This review defines a qualification architecture for integrating photodetectors and photosensors with printed photopolymer structures. It separates detector responsivity from optical delivery, treats encapsulation as an optical and environmental component, and requires calibration and drift to be attached to a declared geometry and spectrum. The central conclusion is non-compensatory: high initial responsivity cannot compensate for uncontrolled coupling loss, spectral mismatch, encapsulation-induced attenuation, humidity sensitivity or unstable dark and illuminated signals.

ER-268 · Version 0.2.