Retraction to: Journal of Materials Science: Materials in Electronics (2017) 28:12660–12669 https://doi.org/10.1007/s10854-017-7091-3

The Editor-in-chief has retracted this article [1] because it shows significant overlap with a previously published article [2] and two articles that were simultaneously under consideration at different journals [3, 4].

Author Chao Chen stated on behalf of all co-authors that they agree to this retraction.