Journal article

Light Detection in Open-Circuit Voltage Mode of Organic Photodetectors

M Kielar, T Hamid, M Wiemer, F Windels, L Hirsch, P Sah, AK Pandey

Advanced Functional Materials | Published : 2019

Abstract

Organic photodetectors (OPDs) are promising candidates for next-generation light sensors as they combine unique material properties with high-level performance in converting photons into electrical signals. However, low-level light detection with OPD is often limited by device dark current. Here, the open-circuit voltage (V ) regime of OPDs is shown to be efficient for detecting low light signals (<100 µW cm ). It is established that the light-dependence of V exhibits two distinct regimes as function of irradiance: linear and logarithmic. Whereas the observed logarithmic regime is well understood in organic photovoltaic cells (OPVs), it is shown experimentally and theoretically that the lin..

View full abstract

University of Melbourne Researchers

Grants

Citation metrics