InfoMat (Jun 2022)
Macroscopic assembled graphene nanofilms based room temperature ultrafast mid‐infrared photodetectors
- Li Peng,
- Lixiang Liu,
- Sichao Du,
- Srikrishna Chanakya Bodepudi,
- Lingfei Li,
- Wei Liu,
- Runchen Lai,
- Xiaoxue Cao,
- Wenzhang Fang,
- Yingjun Liu,
- Xinyu Liu,
- Jianhang Lv,
- Muhammad Abid,
- Junxue Liu,
- Shengye Jin,
- Kaifeng Wu,
- Miao‐Ling Lin,
- Xin Cong,
- Ping‐Heng Tan,
- Haiming Zhu,
- Qihua Xiong,
- Xiaomu Wang,
- Weida Hu,
- Xiangfeng Duan,
- Bin Yu,
- Zhen Xu,
- Yang Xu,
- Chao Gao
Affiliations
- Li Peng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers Zhejiang University Hangzhou China
- Lixiang Liu
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Sichao Du
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Srikrishna Chanakya Bodepudi
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Lingfei Li
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Wei Liu
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Runchen Lai
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- Xiaoxue Cao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers Zhejiang University Hangzhou China
- Wenzhang Fang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers Zhejiang University Hangzhou China
- Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers Zhejiang University Hangzhou China
- Xinyu Liu
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Jianhang Lv
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Muhammad Abid
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Junxue Liu
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- Shengye Jin
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- Kaifeng Wu
- State Key Laboratory of Molecular Reaction Dynamics and Dynamics, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- Miao‐Ling Lin
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors Chinese Academy of Sciences Beijing China
- Xin Cong
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors Chinese Academy of Sciences Beijing China
- Ping‐Heng Tan
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors Chinese Academy of Sciences Beijing China
- Haiming Zhu
- Department of Chemistry Zhejiang University Hangzhou China
- Qihua Xiong
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences Nanyang Technological University Singapore Singapore
- Xiaomu Wang
- National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructure, School of Electronic Science and Engineering Nanjing University Nanjing China
- Weida Hu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences Shanghai China
- Xiangfeng Duan
- Department of Chemistry and Biochemistry, California Nanosystems Institute University of California Los Angeles California USA
- Bin Yu
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers Zhejiang University Hangzhou China
- Yang Xu
- School of Micro‐nanoelectronics, State Key Laboratory of Silicon Materials, Hangzhou Global Scientific and Technological Innovation Center, ZJU‐UIUC Joint Institute Zhejiang University Hangzhou China
- Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers Zhejiang University Hangzhou China
- DOI
- https://doi.org/10.1002/inf2.12309
- Journal volume & issue
-
Vol. 4,
no. 6
pp. n/a – n/a
Abstract
Abstract Graphene with linear energy dispersion and weak electron–phonon interaction is highly anticipated to harvest hot electrons in a broad wavelength range. However, the limited absorption and serious backscattering of hot‐electrons result in inadequate quantum yields, especially in the mid‐infrared range. Here, we report a macroscopic assembled graphene (nMAG) nanofilm/silicon heterojunction for ultrafast mid‐infrared photodetection. The assembled Schottky diode works in 1.5–4.0 μm at room temperature with fast response (20–30 ns, rising time, 4 mm2 window) and high detectivity (1.6 × 1011 to 1.9 × 109 Jones from 1.5 to 4.0 μm) under the pulsed laser, outperforming single‐layer‐graphene/silicon photodetectors by 2–8 orders. These performances are attributed to the greatly enhanced photo‐thermionic effect of electrons in nMAG due to its high light absorption (~40%), long carrier relaxation time (~20 ps), low work function (4.52 eV), and suppressed carrier number fluctuation. The nMAG provides a long‐range platform to understand the hot‐carrier dynamics in bulk 2D materials, leading to broadband and ultrafast MIR active imaging devices at room temperature.
Keywords
