The record efficiency and low-cost production of perovskite solar cells has attracted a great deal of interest in the past few years. Now researchers in the US have developed a solution-processing technique that produces perovskite crystals with millimetre grain sizes – several orders of magnitude larger than the nano- and submicron-crystalline materials produced previously. Larger grains mean fewer defects, and perovskite with properties comparable to inorganic counterparts at a fraction of the cost….
http://nanotechweb.org/cws/article/tech/60016
