MXenes have recently been used to grow highly textured potassium niobate ferroelectric crystals. Herein, the versatility of MXenes is further demonstrated by growing ferroelectric and luminescent lithium niobate (LiNbO3) crystals from niobium carbide MXene (Nb2CTx). The formation of high-aspect-ratio LiNbO3 rhombic crystals is confirmed by extensive structural analysis. The ferroelectricity of MXene-derived LiNbO3 is verified, using standard ferroelectric and dielectric measurements. In addition, for the first time, Pr3+-doped LiNbO3 crystals are synthesized with simultaneous visible photoluminescence (PL) from Nb2CTx MXene. This work demonstrates that it is possible, by using the 2D character of MXenes, to fabricate high aspect ratio and well-oriented photoluminescent ferroelectric crystals for advanced optoelectronic applications.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication is supported by King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR), Saudi Arabia, under award no. OSR-2016-CRG5-2977, JSPS KAKENHI (Grant nos. 19H00835, 18H01453, and 17H06374), and the National Natural Science Foundation of China (Grant no. 11804255). The authors would like to thank Prof. Dalaver Anjum and Mr. Jehad K. El-Demellawi for their constructive suggestions in the experimental sessions.