6533b854fe1ef96bd12aeb5b

RESEARCH PRODUCT

Incorporation of potassium halides in the mechanosynthesis of inorganic perovskites: feasibility and limitations of ion-replacement and trap passivation

Yousra El AjjouriHenk J. BolinkFrancisco PalazonVladimir S. ChirvonyMichele Sessolo

subject

Materials sciencePhotoluminescencePassivationGeneral Chemical EngineeringPotassiumInorganic chemistryHalidechemistry.chemical_element02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesIonTrap (computing)chemistryMechanosynthesis0210 nano-technologyLayer (electronics)MaterialsFisicoquímica

description

Potassium halides (KX; X = I, Br, or Cl) were incorporated as partial replacements of CsBr in the mechanosynthesis of CsPbBr3. This led to partial substitution of both monovalent ions forming mixed Cs1−xKxPbBr3−yXy perovskites. Longer photoluminescence lifetimes were also observed, possibly linked to the formation of a non-perovskite KPb2X5 passivating layer.

10.1039/c8ra08823chttp://dx.doi.org/10.1039/c8ra08823c