Guo Zexuan, Jiang Dayong, Hu Nan, Yang Xiaojiang, Zhang Wei, Duan Yuhan, Gao Shang, Liang Qingcheng, Zheng Tao, Lv Jingwen
School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
Research Center for Space Optical Engineering, Harbin Institute of Technology, Harbin, 150001, China.
Nanoscale Res Lett. 2018 Jun 5;13(1):168. doi: 10.1186/s11671-018-2573-7.
We proposed and demonstrated MgZnO metal-semiconductor-metal (MSM) ultraviolet photodetectors (UV) assisted with surface plasmons (SPs) prepared by the radio frequency magnetron sputtering deposition method. After the decoration of their surface with Pt nanoparticles (NPs), the responsivity of all the electrode spacing (3, 5, and 8 μm) photodetectors were enhanced dramatically; to our surprise, comparing with them the responsivity of larger spacing sample, more SPs were gathered which are smaller than others in turn. A physical mechanism focused on SPs and depletion width is given to explain the above results.
我们提出并展示了通过射频磁控溅射沉积法制备的、借助表面等离子体激元（SPs）的MgZnO金属-半导体-金属（MSM）紫外光探测器（UV）。在用铂纳米颗粒（NPs）对其表面进行修饰后，所有电极间距（3、5和8μm）的光探测器的响应度都显著提高；令我们惊讶的是，与较大间距样品的响应度相比，更多的表面等离子体激元聚集在一起，而这些表面等离子体激元又依次比其他的更小。给出了一种聚焦于表面等离子体激元和耗尽宽度的物理机制来解释上述结果。
