Shape Evolution and Single Particle Luminescence of Organometal Halide Perovskite Nanocrystals

Citations Over TimeTop 1% of 2015 papers

Abstract

Organometallic halide perovskites CH3NH3PbX3 (X = I, Br, Cl) have quickly become one of the most promising semiconductors for solar cells, with photovoltaics made of these materials reaching power conversion efficiencies of near 20%. Improving our ability to harness the full potential of organometal halide perovskites will require more controllable syntheses that permit a detailed understanding of their fundamental chemistry and photophysics. In this manuscript, we systematically synthesize CH3NH3PbX3 (X = I, Br) nanocrystals with different morphologies (dots, rods, plates or sheets) by using different solvents and capping ligands. CH3NH3PbX3 nanowires and nanorods capped with octylammonium halides show relatively higher photoluminescence (PL) quantum yields and long PL lifetimes. CH3NH3PbI3 nanowires monitored at the single particle level show shape-correlated PL emission across whole particles, with little photobleaching observed and very few off periods. This work highlights the potential of low-dimensional organometal halide perovskite semiconductors in constructing new porous and nanostructured solar cell architectures, as well as in applying these materials to other fields such as light-emitting devices and single particle imaging and tracking.

Related Papers

• → Stability and Transformations of Heated Gold Nanorods(2011)30 cited
• → HPHT synthesis and magnetic property of -Fe2O3@C core-shell nanorods(2014)2 cited
• → Superfocusing effect in the chain of silver nanorods(2011)2 cited
• → Fabrication of magnesium germanide nanorods from Ge nanorod templates(2012)2 cited
• Solvothermal Synthesis of CdSxSe1-x Nanorods by Polymer Gel-Controlled Growth Strategy(2007)