Perovskite solar module with 18.45% effectiveness through co-solvent dilution method

• The module was produced with methylammonium lead iodide (MAPbI3) perovskite solar cells through inexpensive spin coating. The panel additionally achieved an open-circuit voltage of 16.07 V, a short-circuit current of 69.52 mA, and a fill element of 75.35%.

A worldwide study team has established a perovskite solar module with an active area of 45.6 cm2 with a co-solvent dilution technique that waters down perovskite precursors to a reduced concentration.

" The new technique permits a reduction in using toxic solvents and the focus of lead in the forerunners," the research's matching author, Aldo di Carlo, told pv magazine. "These crucial elements may promote the transfer of the perovskite solar cell technology to industrial production."

The module was produced with methylammonium lead iodide (MAPbI3) perovskite solar cells by means of low-cost spin coating, which uses a consistent film onto a strong surface using centrifugal force and also a liquid-vapor user interface.

This strategy is frequently thought not to be ideal to produce perovskite photovoltaics on industrial-scale substrates in a material-efficient way because of the nature of both spin coating and also perovskites. "Our strategy tackles this obstacle by introducing a co-solvent that allows the fluid perovskite to spread evenly and dry extremely promptly and uniformly," claimed co-author Hong Zhang, describing the irregular thickness based on the perovskite surface area when the spin coating is applied.

As a co-solvent, the academics made use of an organic compound known as Tetrahydrofuran (THF). The cell accomplished a maximum power conversion performance of 23.8%. "To the most effective of our knowledge, this is the highest possible performance gotten at such a weaken concentration of the perovskite precursor," the researchers explained.

The module created with this solar cell technology got to a performance of 18.45%, an open-circuit voltage of 16.07 V, a short-circuit current of 69.52 mA, as well as a fill aspect of 75.35%.

"Encouragingly, our co-solvent dilution technique allows making use of less than 80% of the starting perovskite material and toxic solvents to fabricate lab-scale devices with comparable high performance, which inspired us to validate our method on large-scale module manufacture using commercial spin-coating strategies generally readily available in a semiconductor fab," the research study group stated.

All the details of the brand-new strategy can be located in the paper A global co-solvent dilution technique makes it possible for facile and also affordable manufacture of perovskite photovoltaics, released in nature communications. The research study team consists of scientists from the University of Rome Tor Vergata in Italy, the Swiss Federal Institute of Technology Lausanne (EPFL), and also the North Carolina State University in the United States.