Highly Oriented SrTiO3 Thin Film on Graphene Substrate

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• 作者：Sang A Lee ; Jae-Yeol Hwang ; Eun Sung Kim ; Sung Wng KimWoo Seok Choi
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2017
• 出版时间：February 1, 2017
• 年：2017
• 卷：9
• 期：4
• 页码：3246-3250
• 全文大小：372K
• ISSN：1944-8252

文摘

Growth of perovskite oxide thin films on Si in crystalline form has long been a critical obstacle for the integration of multifunctional oxides into Si-based technologies. In this study, we propose pulsed laser deposition of a crystalline SrTiO₃ thin film on a Si using graphene substrate. The SrTiO₃ thin film on graphene has a highly (00l)-oriented crystalline structure which results from the partial epitaxy. Moreover, graphene promotes a sharp interface by highly suppressing the chemical intermixing. The important role of graphene as a 2D substrate and diffusion barrier allows the expansion of device applications based on functional complex oxides.