Reuse of P3HT:PCBM-based organic solar cells as photodetectors: Extending lifetime in optoelectronic applications

Abstract

This study explores the reuse of organic solar cells at the end of their life cycle as organic photodetectors, promoting a sustainable model. Photodetectors were fabricated from organic solar cells using standard structures, and their characterization demonstrated technical feasibility as sensors/receivers in telecommunications applications. The results include a stable performance of the photodetector up to a frequency of 1000 kHz and a progressive reduction in voltage with transmission distance, with a significant drop at frequencies above 50 kHz, confirming its suitability for reliable data transmission in moderately noisy environments. These findings not only validate the use of repurposed organic photovoltaic devices as photodetectors but also highlight the positive impact on reducing electronic waste and extending the materials' lifetime. The photodetector's ability to operate in a self-powered mode underscores its potential for applications in energy-constrained environments. This approach represents progress towards a more sustainable energy model and it opens new opportunities for its implementation in sectors such as telecommunications, IoT, and advanced sensor systems.