Giulio Simone

TL;DR: In this article, a quantitative analysis of the intrinsic dark current processes shows that charge injection from the electrodes is the dominant contribution to the dark current density in OPDs, which is typically addressed by fine-tuning the active layer energetics and stratification or using charge blocking layers.

TL;DR: In this article, a quantitative relationship between the magnitude of the dark current density under reverse bias (Jd) and the properties of the bulk heterojunction active layer has so far not been established.

TL;DR: Organic photodiodes sensitive to near‐infrared (NIR) light are evaluated as photovoltaic pixels for future application in retinal prostheses and only tandem OPD pixels can cover the entire charge per pulse neural stimulation window due to their higher V OC.

TL;DR: In this paper, an organic reflectance PPG array based on 16 × 16 OPD pixels is developed, which exhibits near-infrared sensitivity up to ≈950 nm and low dark current density in the order of 10−6 mA cm−2.

TL;DR: In this article, an incident spectrum is parametrized using a single broadband organic photodiode (OPD), which is achieved by exploiting the incident wavelength dependence of charge extraction caused by optically induced trap states in a metal oxide electron extraction layer.