標題: A Fast Route Towards Freestanding Single-Crystalline Oxide Thin Films by Using YBa(2)Cu(3)O(7-x)as a Sacrificial Layer
作者: Chang, Yao-Wen
Wu, Ping-Chun
Yi, Jhih-Bang
Liu, Yu-Chen
Chou, Yi
Chou, Yi-Chia
Yang, Jan-Chi
電子物理學系
Department of Electrophysics
關鍵字: Freestanding;YBa(2)Cu(3)O(7-x)sacrificial layer;Pulsed laser deposition
公開日期: 28-Aug-2020
摘要: Researchers have long been seeking multifunctional materials that can be adopted for next-generation nanoelectronics, and which, hopefully, are compatible with current semiconductor processing for further integration. Along this vein, complex oxides have gained numerous attention due to their versatile functionalities. Despite the fact that unbounded potential of complex oxides has been examined over the past years, one of the major challenges lies in the direct integration of these functional oxides onto existing devices or targeted substrates that are inherently incompatible in terms of oxide growth. To fulfill this goal, freestanding processes have been proposed, in which wet etching of inserted sacrificial layers is regarded as one of the most efficient ways to obtain epitaxial high-quality thin films. In this study, we propose using an alternative oxide, YBa2Cu3O7(YCBO), as a sacrificial layer, which can be easily dissolved in light hydrochloric acid in a more efficient way, while protecting selected complex oxides intact. The high epitaxial quality of the selected complex oxide before and after freestanding process using YBCO as a sacrificial layer is comprehensively studied via a combination of atomic force microscopy, X-ray diffraction, transmission electron microscopy, and electrical transports. This approach enables direct integration of complex oxides with arbitrary substrates and devices and is expected to offer a faster route towards the development of low-dimensional quantum materials.
URI: http://dx.doi.org/10.1186/s11671-020-03402-0
http://hdl.handle.net/11536/155355
ISSN: 1931-7573
DOI: 10.1186/s11671-020-03402-0
期刊: NANOSCALE RESEARCH LETTERS
Volume: 15
Issue: 1
起始頁: 0
結束頁: 0
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