Development of Organic Photodetectors Based on Novel Acceptor and Donor Systems – Towards Near-Infrared Detection

Abstract

Organic photodiodes (OPDs) have emerged as promising alternatives to traditional inorganic photodetectors in the near-infrared (NIR) range due to their unique benefits, including solubility for solution processing, tunable optoelectronic properties, and cost-effective fabrication. This study focuses on the development of OPDs for NIR photodetection (700 nm to 1200 nm) using newly synthesized low-bandgap molecules. We investigate various optimisation processes, nano-morphology aspects, and device architectures to enhance and fine-tune the performance of NIR OPDs. The research encompasses design, fabrication and characterisation of NIR OPDs using novel donor-acceptor systems, paving the way for next-generation photodetectors for modern day applications.