Tin halide perovskites are promising for optoelectronics, although their sensitivity to ambient conditions due to Sn(II) oxidation presents a challenge. Encapsulation techniques can mitigate degradation and facilitate advanced studies of the intrinsic properties. To study and improve the ambient stability of CsSnBr3 and CsSnI3 nanocrystal (NC) thin films, we explored various encapsulation methods:

The authors retract the published paper “Chem. Mater. 2022, 34, 9425–9436. DOI: 10.1021/acs.chemmater.2c01722” because, upon investigation by the National Institute of Advanced Industrial Science and Technology, crucial Electron Microscopy images were found to be manipulated, which undermines the main findings of the paper. Specifically, Figures 2a, 2c, 6a, 6b, 6d, 7a, S10a S10d, S10e, S10f, and S10g

The authors retract the published paper “Chem. Mater. 2012, 24, 209–214. DOI: 10.1021/cm2030526” because, upon investigation by the National Institute of Advanced Industrial Science and Technology, crucial Electron Microscopy images were found to have been manipulated, which undermines the main findings of the paper. Specifically, Figure S8 was found to have been manipulated, and the original image

The authors retract the published paper “Chem. Mater. 2009, 21, 5892–5898. DOI: 10.1021/cm903108h” because, upon investigation by the National Institute of Advanced Industrial Science and Technology, crucial Electron Microscopy images were found to be manipulated, which undermines the main findings of the paper. Specifically, Figures 1c and 1d had false scale bars, which are significantly larger than