Enhanced Performance of Organic Photodetector Through Metal Doping and Inkjet Printing for Sensor-in-Pixel Displays

Abstract

We developed an inverted OPD by doping the hole-blocking layer with metals, reducing leakage current and enhancing detection performance under reverse bias. IGZO-doped devices exhibited the best leakage current suppression and specific detectivity. Inkjet printing was applied to achieve precise pixelation of the OPD layers, highlighting its potential for large area, solution-processed Sensor-in-Pixel displays. This work demonstrates the feasibility of OPD fabrication for wearable and security applications.