High Voltage Multijunction Photovoltaic Devices: Current Matching and the Characterization of Low Bandgap Material Germanium Tin

A next step in the energy transition is to produce green fuels from sunlight. One way to achieve this is via high voltage photovoltaic (PV) devices which can directly drive electrolysis reactions to produce hydrogen or other chemical fuels. Group IV based multijunction (MJ) PV devices are a candidate to function as these high voltage devices.<br...

Opto-Electrical Simulation of Perovskite/Silicon Tandem Solar Cell: ASA optimization of Pvk/c-Si tandem simulation

Emerging PV technologies like Perovskite has lead to the development of Perovskite/Silicon (Pvk/c-Si) tandem device (Multi-junction device) and has now gained a lot of momentum and attention due to the fact that the tandem device can reach a Shockley-Quisser limit of about 44.1% efficiency. But to speed up its development, a lot of emphasis is...

Improved current matching in all-silicon triple-junction solar cells for wireless photoelectrochemical devices

In a future energy system, chemical energy carriers that can easily be stored, like hydrogen, are of vital importance. One possible way of producing carbonneutral hydrogen is by direct solar to hydrogen conversion in a photoelectrochemical cell (PEC). Silicon based multijunction solar cells are a possible candidate for the photovoltaic stack of...

Developing a Spectral Radiance Model to Enable Radiometric Analysis for HCPV

Concentrator Photovoltaics (CPV) employs optical elements such as mirrors to focus solar flux to a small target area with a photovoltaic (PV) receiver. CPV system design is hindered by the fact that there is no standardised workhorse model to accurately evaluate CPV topologies. The spectral irradiance standards - the backbone of PV system...

Improving a Silicon Based Triple Junction Cell for Solar Water Splitting

In the transition towards a renewable based energy supply, one of the main challenges is the intermittent nature of most renewable energy sources. In order to ensure a stable energy supply, different storage technologies attract a lot of research attention. For long term storage, using hydrogen as artificial fuel is a promising option. However,...