Epitaxial Ferroelectric Hexagonal Boron Nitride Grown on Graphene
學年 113
學期 2
出版（發表）日期 2025-02-21
作品名稱 Epitaxial Ferroelectric Hexagonal Boron Nitride Grown on Graphene
作品名稱（其他語言）
著者 Sheng-Shong Wong, Zhen-You Lin, Sheng-Zhu Ho, Chih-En Hsu, Ping-Hung Li, Ching-Yu Chen, Yen-Fu Huang, Kuo-En Chang, Yu-Chiang Hsieh, Chia-Hao Chen, Ming-Hao Lee, Ming-Wen Chu, Kuang-I Lin, Tse-Ming Chen, Yi-Chun Chen, Hung-Chung Hsueh*(薛宏中), Cheng-Maw Cheng*, Chung-Lin Wu*
單位
出版者
著錄名稱、卷期、頁數 Advanced Materials, 37, p. 2414442
摘要 Ferroelectricity realized in van der Waals (vdW) materials with non-centrosymmetric stacking configurations holds promise for future 2D devices with nonvolatile and reconfigurable functionalities. However, the epitaxial growth of ferroelectric vdW materials often struggles to achieve an energetically unfavorable stacking configuration that enables electric polarization. This challenge is particularly evident when performing heteroepitaxy on another vdW substrate to create versatile and scalable ferroelectric building blocks designed for large-area, atomic-scale thicknesses. Here, epitaxial hexagonal boron nitride (h-BN) multilayer films are successfully grew on single-crystal graphene synthesized on a miscut SiC (0001) substrate. Theoretical calculations illustrate that the moiré-patterned h-BN/graphene hetero-interface intrinsically exhibits polarization, leading to a polarized AB stacking in multilayer h-BN films to minimize the total formation energy, which is validated experimentally by the layer-dependent band dispersions. The as-grown multilayer h-BN layers demonstrated robust, homogeneous ferroelectricity with switchable out-of-plane polarization via interlayer sliding. This study establishes an effective route for stacking-controlled heteroepitaxy, enabling the large-scale integration of vdW materials with ferroelectricity and versatile functionalities, offering a promising platform for next-generation 2D ferroelectric devices
關鍵字
語言 en
ISSN
期刊性質 國外
收錄於 SCI Scopus
產學合作 國內
通訊作者 Hung-Chung Hsueh*(薛宏中), Cheng-Maw Cheng*, Chung-Lin Wu*
審稿制度 1
國別 USA
公開徵稿
出版型式 ,電子版