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...

Dimmable fenestration and incorporated photovoltaic design: Smart Window design with PDLC and AL-BSF cells

The built environment contributes with 39% of the CO2 emissions in the world [3]. At the same time it is a sector that is expected to grow from US$10.9 trillion (2017) to US$12.9 trillion (2022) [4]. A sector with such an economic growth but with a negative environmental impact needs to innovate in order to reduce its carbon footprint. These are...

Contact Stack Evaluation for SHJ Solar Cells and Process Development of IBC-SHJ Solar Cells

Nowadays, silicon heterojunction (SHJ) solar cell is one of the most promising photovoltaic technologies thanks to the outstanding passivation quality from the a-Si:H layers. Together with the interdigitated-back-contacted (IBC) architecture, it enables the highest efficient, 26.7%, single junction c-Si solar cell. However, the mass production...