Making solar cells is like buttering bread
(PHYSorg.com Nanotechnology)

Formamidinium lead iodide is a very good material for photovoltaic cells, but getting the correct stable crystal structure is a challenge. The techniques developed so far have produced poor results. However, University of Groningen scientists, led by Professor of Photophysics and Optoelectronics Maria Antonietta Loi, have now cracked it using a blade and a dipping solution. The results were published in the journal Nanoscale on 15 March 2019.