Publications de Andrey Petrov | EPFL Graph Search

Strategic advantages of reactive polyiodide melts for scalable perovskite photovoltaics

Despite tremendous progress in efficiency and stability, perovskite solar cells are still facing the challenge of upscaling. Here we present unique advantages of reactive polyiodide melts for solvent- and adduct-free reactionary fabrication of perovskite f ...

Nature Publishing Group2019

A new formation strategy of hybrid perovskites via room temperature reactive polyiodide melts

Michael Graetzel, Shaik Mohammed Zakeeruddin, Andrey Petrov

Here we introduce a new solvent-free preparation method for hybrid metal halide perovskites involving the direct reaction of metallic lead with polyiodide melts. We discovered new reactive polyiodide melts (RPMs) that can be prepared simply by adding eleme ...

Royal Soc Chemistry2017

Crystal Structure of DMF-Intermediate Phases Uncovers the Link Between CH3NH3PbI3 Morphology and Precursor Stoichiometry

Michael Graetzel, Andrey Petrov

We found for the first time a new origin of selection of perovskite crystallization pathways from DMF solutions containing MAI and PbI2 to present here a comprehensive study of a full set of essential intermediate phases determining the perovskite's morpho ...

American Chemical Society2017

New Insight into the Formation of Hybrid Perovskite Nanowires via Structure Directing Adducts

Michael Graetzel, Shaik Mohammed Zakeeruddin, Norman Pellet, Jiyoun Seo, Andrey Petrov

We report a facile preparation approach of MAPbBr(3), MAPbCl(3), or FAPbBr(3) (where MA = CH3NH3+ and FA = CH(NH2)(2)(+)) perovskite nanowires via sequential synthesis of MAPbI(3) and FAPbI(3) nanowires with chemically controlled composition and morphologi ...

American Chemical Society2017