Fluoride-Free Synthesis Strategy for Luminescent Inp Cores and Effective Shelling Processes Via Combinational Precursor Chemistry

Achieving a near-unity photoluminescence quantum yield and high stability of CsPbI3nanoplatelets by hydroiodic acid-assisted ligand treatment

“…The absorption spectra showed that the etched NPLs and treated NPLs possessed higher valley/peak ratios compared to the pristine NPLs, implying high size uniformity. 45 This observation is also verified from the FWHM of the PL spectra, which changed from 42 nm for the pristine NPLs to 23 nm and 22 nm etched and treated counterparts, respectively. This indicates that the surface modification strategy of DDDAm assisted by HI in situ etching can achieve CsPbI 3 NPLs with a high PL QY.…”