Li, F., Kou, L., Chen, W. et al. Enhancing the short-circuit current and power conversion efficiency of polymer solar cells with graphene quantum dots derived from double-walled carbon nanotubes.

Rather than simply shutting down idle circuits, Savidis’ technique repurposes them to do useful work powering lower voltage components. This allows new processing capabilities to be added at low cost.

Efficiency can fall dramatically to 60 to 70% at low V OUT and current of only a few amps. The efficiency loss arises from switching losses, because the upper switch always sees full load current.

However for high efficiency and high reliability applications, it is worth considering the use of Super-Junction MOSFETS. Side-by-side comparisons with IGBTs show that Super-Junction MOSFET circuits ...

BingoCGN, a scalable and efficient graph neural network accelerator that enables inference of real-time, large-scale graphs ...

The tandem device is based on a bottom organic cell that can achieve a remarkable power conversion efficiency of 17.9% and a high short-circuit current density of 28.60 mA cm2. Furthermore, it uses a ...

In a leap toward more powerful and efficient computer chips, researchers at the University of Virginia have confirmed a key principle governing heat flow in thin metal films—a critical component ...

In Power Tip #122, I provided an overview of a high-efficiency 1kW bus converter design that addresses this need using high-performance GaN switches [1]. That design uses a matrix transformer-based ...

Researchers have created environmentally-friendly, high-efficiency photovoltaic cells that harness ambient light to power internet of Things (IoT) devices. Newcastle University researchers have ...