Tao Quanyang, Wu Ruixia, Li Qianyuan, Kong Lingan, Chen Yang, Jiang Jiayang, Lu Zheyi, Li Bailing, Li Wanying, Li Zhiwei, Liu Liting, Duan Xidong, Liao Lei, Liu Yuan
Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, China.
State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
Nat Commun. 2021 Mar 23;12(1):1825. doi: 10.1038/s41467-021-22118-y.
Van der Waals heterostructures (vdWHs) have attracted tremendous interest owing to the ability to assemble diverse building blocks without the constraints of lattice matching and processing compatibility. However, once assembled, the fabricated vdWHs can hardly be separated into individual building blocks for further manipulation, mainly due to technical difficulties in the disassembling process. Here, we show a method to disassemble the as-fabricated vdWHs into individual building blocks, which can be further reassembled into new vdWHs with different device functionalities. With this technique, we demonstrate reconfigurable transistors from n-type to p-type and back-gate to dual-gate structures through re-stacking. Furthermore, reconfigurable device behaviors from floating gate memory to Schottky diode and reconfigurable anisotropic Raman behaviors have been obtained through layer re-sequencing and re-twisting, respectively. Our results could lead to a reverse engineering concept of disassembled vdWHs electronics in parallel with state-of-the-art vdWHs electronics, offering a general method for multi-functional pluggable electronics and optoelectronics with limited material building blocks.
范德华异质结构（vdWHs）因其能够在不受晶格匹配和工艺兼容性限制的情况下组装各种构建块而引起了极大的关注。然而，一旦组装完成，制造好的vdWHs很难分离成单个构建块进行进一步操作，这主要是由于拆卸过程中的技术困难。在这里，我们展示了一种将制造好的vdWHs拆卸成单个构建块的方法，这些构建块可以进一步重新组装成具有不同器件功能的新vdWHs。通过这种技术，我们展示了通过重新堆叠从n型到p型以及从背栅到双栅结构的可重构晶体管。此外，分别通过层重新排序和重新扭转，获得了从浮栅存储器到肖特基二极管的可重构器件行为以及可重构各向异性拉曼行为。我们的结果可能会导致与先进的vdWHs电子学并行的拆卸vdWHs电子学的逆向工程概念，为具有有限材料构建块的多功能可插拔电子学和光电子学提供一种通用方法。
