Retraction Note to: J Mater Sci: Mater Electron (2021) 32:4097–4109 https://doi.org/10.1007/s10854-020-05151-3


The Editor-in-Chief has retracted this article because an investigation by the publisher found evidence to suggest that authorship for this article had been offered for sale prior to its acceptance into the journal. Kefayat Ullah, Qindong Xue, Gang Liu, Xuhang Hong and Yanchao Wen disagree to this retraction. Ya Wang has not responded to any correspondence from the editor about this retraction.