2D Black Phosphorus/SrTiO₃-Based Programmable Photoconductive Switch

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• 作者：Fucai Liu ; Chao Zhu ; Lu You ; Shi-Jun Liang ; Shoujun Zheng ; Jiadong Zhou ; Qundong Fu ; Yongmin He ; Qingsheng Zeng ; Hong Jin Fan ; Lay Kee Ang ; Junling Wang and Zheng Liu
• 刊名：Advanced Materials
• 出版年：2016
• 出版时间：September 21, 2016
• 年：2016
• 卷：28
• 期：35
• 页码：7768-7773
• 全文大小：841K
• ISSN：1521-4095

文摘

A novel heterostructure is designed by stacking 2D black phosphorus (BP) on a SrTiO₃ substrate. The device demonstrates programmable photoconductive switching under illumination of UV and red light. The light-tunable persistent photoconductivity exhibits a large on/off ratio exceeding 10⁵. The persistent state shows almost no relaxation or decay at low temperature. These features are suitable for a new generation of optoelectronic devices for memory application.