Solution‐Processed Organic Photodiodes

Summary

In this chapter, the efforts to achieve efficient solution‐processed organic photodiodes (OPDs) and imagers are reviewed.

First of all, the basics of this technology are presented, introducing to the main materials, processes, device architectures, operation principles, and figures of merits.

Then, some of the most important performance data found in the literature are reported, illustrating the impressive and constant improvements of performance along the past 20 years, thanks to the joint efforts of chemistry and device processing.

Several promising fields of applications of these new devices are also discussed, including large‐area X‐ray sensors, introduction into CMOS imagers, and near‐infrared (NIR) detection.

Finally, the main current approaches to model the performances of these devices are presented, briefly illustrating the impact of optical propagation, carrier transport, contacts, defects, shunts, etc., on device performances.

This chapter constitutes an introduction to this field of research, from chemistry and process to device physics and applications.