Correction to Brightly Luminescent and Color-Tunable Formamidinium Lead Halide Perovskite FAPbX₃ (X = Cl, Br, I) Colloidal Nanocrystals

Abstract

O n page S3 of the Supporting Information, line 10, "FAI (0.0159 g, 0.1 mmol)" should be "FAI (0.0172 g, 0.1 mmol)".

Near-Unity Photoluminescence Quantum Yield in CsPbBr3 Nanocrystal Solid-State Films via Postsynthesis Treatment with Lead Bromide

“…An important advantage of perovskite NCs is the possibility to carry out anion-exchange reaction, thus changing their emission color. 3,14,35 For this reason, we have investigated anion-exchange reactions on our NCs using Cl − or I − anions (see methods in the Supporting Information). Figure 2d reports the PL spectra of the anion exchanged NCs in toluene solutions.…”

Efficient Optical Amplification in the Nanosecond Regime from Formamidinium Lead Iodide Nanocrystals

“…36−38 Despite the successes, majorly based on all-inorganic perovskite NCs, the ambient thermodynamic and chemical instability of CsPbI 3 thin films and crystallites 39,40 renders such materials unsuitable for light-emitting applications in the red. The recent facile synthesis of robust formamidinium lead iodide perovskite (FAPbI 3 ) NCs 14,41 appears to largely circumvent the problem. Such NCs were found to exhibit outstanding optical properties with high quantum yields above 70% 14 and low ASE threshold under femtosecond excitation, down to 7.5 μJ cm −2 , 14 combined with a significantly higher crystal chemical durability compared to the Cs-based counterparts in the red and nearinfrared region.…”

Synthesis of CaWO4:Ln3+ nanocomposites with high transparency via ligand‐assisted re‐precipitation method

“…A band from 200 to 250 nm with a peak at 210 nm is observed, which is ascribed to the electric charge transfer from the oxygen ligands to the central tungsten atom in tetrahedral [WO 4 2− ] clusters. It is widely known that an oxygen (O) 2p electron transfer into the empty 5d orbitals of tungsten (W) to form the excitation band 6,21 . Figure 3B shows spectra of the our CaWO 4 :Dy 3+ NCs.…”

“…Herein, we proposed a facile method for the synthesis of CaWO 4 :Ln 3+ NCs 19,20 and transparent CaWO 4 :Ln 3+ /polystyrene (PS) or polymethyl methacrylate (PMMA) copolymer films with outstanding luminescent properties. Specifically, we have achieved uniform grain size through the ligand‐assisted re‐precipitation (LARP) method, instead of the traditional sol–gel method 21,22 . And their component, micromorphology, and optical property were comprehensively studied.…”