| abstract |
The present invention relates to a composition comprising one or more perovskite precursors dissolved in a mixture of solvents comprising: ∙ i) one or more polar aprotic solvents, each selected in such a way that it can, when used in absence of other components, dissolve said one or more perovskite precursors, ∙ ii) one or more linear alcohols of general formula: C n H 2n+1 OH, wherein n is from 1 to 12, and ∙ iii) optionally, one or more acids, wherein the polar aprotic solvent or mixture of polar aprotic solvents represent between 50 and 95 vol% of the mixture of solvents, wherein the vol% of the mixture of solvents not occupied by polar aprotic solvents is occupied for at least 90 vol%, preferably for 100 vol%, by the one or more linear alcohols, and the one or more acids if present. |