solar cell

As a focus of research at leading institutes the world over, new developments in the perovskite field come thick and fast almost every week. From x-ray observations on a nanoscale to financing and plans for mass production, pv magazine is bringing together some of the most exciting developments of recent weeks.

The 11th edition of the German document which tracks solar price falls and efficiency improvements has considered the role bigger wafers are playing in cost reduction.

Russian researchers have improved the efficiency of a thin-fim GaAs‐based solar cell by 0.9% by applying single‐walled carbon nanotubes as the topmost layer. The cell also showed a slight increase in the short circuit current density, from 16.9 to 17.9 mA/cm2.

U.S. scientists have demonstrated a perovskite-silicon tandem cell they claim has low reflectance losses and strong potential for commercial production. The tandem architecture involves a manufacturing process featuring the solution-based blading of perovskites onto textured silicon wafers.

A U.S. research group has developed a new solar cell, based on six active photoactive layers, to capture light from a specific part of the solar spectrum. The scientists claim that they could potentially reach a 50% efficiency rate with the new cell.

Researchers in Australia and China used intensity-modulated photoluminescence to map the series resistance of perovskite solar cells with a technique which could further understanding of the causes of instability issues in such devices.

German scientists have developed a new process for the formation of a phase pure kesterite Cu2ZnSnSe4 (CZTSe), which they claim can improve the material homogeneity and suppress the well-known issue of tin losses. The new technique is based on stacked elemental and alloyed precursors with a Zn/Cu-Sn/Zn precursor structure.

According to one Dutch scientist, the development of PV technology in recent decades should be seen as an evolutionary process, rather than the constant emergence of new generations of equipment.

Chinese scientists have developed a single-layered organic solar cell based on non-fullerene acceptors with improved fill factor and short-circuit current density. They achieved their results with a new morphology that could be more suitable for vertical charge transport.

Dutch scientists are producing mesoporous titanium dioxide thin films at room temperature by using the papain enzyme in a dip‐coating procedure. This fully organic process could facilitate the development of cheaper, more efficient dye‐sensitized solar cells.