Teunis, Meghan B.Lawrence, Katie N.Dutta, PoulamiSiegel, Amanda P.Sardar, Rajesh2017-08-182017-08-182016-10Teunis, M. B., Lawrence, K. N., Dutta, P., Siegel, A. P., & Sardar, R. (2016). Pure white-light emitting ultrasmall organic–inorganic hybrid perovskite nanoclusters. Nanoscale, 8(40), 17433–17439. https://doi.org/10.1039/C6NR06036Fhttps://hdl.handle.net/1805/13868Organic–inorganic hybrid perovskites, direct band-gap semiconductors, have shown tremendous promise for optoelectronic device fabrication. We report the first colloidal synthetic approach to prepare ultrasmall (∼1.5 nm diameter), white-light emitting, organic–inorganic hybrid perovskite nanoclusters. The nearly pure white-light emitting ultrasmall nanoclusters were obtained by selectively manipulating the surface chemistry (passivating ligands and surface trap-states) and controlled substitution of halide ions. The nanoclusters displayed a combination of band-edge and broadband photoluminescence properties, covering a major part of the visible region of the solar spectrum with unprecedentedly large quantum yields of ∼12% and photoluminescence lifetime of ∼20 ns. The intrinsic white-light emission of perovskite nanoclusters makes them ideal and low cost hybrid nanomaterials for solid-state lighting applications.enIUPUI Open Access Policyorganic–inorganic hybrid perovskitesoptoelectronic device fabricationultrasmall nanoclustersArticle