Journal of Inorganic Materials

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A Rectifier Bridge Circuit Based on Metal-semiconductor-metal Fin Tunneling Diode for High-frequency Application

DENG Hengyang1, QIN Cuijie1, HAO Shenglan1, FENG Guangdi1,2, ZHU Qiuxiang1, TIAN Bobo1,2, CHU Junhao1, DUAN Chungang1,3   

  1. 1. Shanghai Center of Brain-inspired Intelligent Materials and Devices, Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China;
    2. Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China;
    3. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2025-02-22 Revised:2025-03-14
  • Contact: ZHU Qiuxiang, associate professor. E-mail: 51254700083@stu.ecnu.edu.cn;Tian Bobo, professor. E-mail: bbtian@ee.ecnu.edu.cn
  • About author:DENG Hengyang (1999-), male, Master candidate. E-mail: 51254700083@stu.ecnu.edu.cn
  • Supported by:
    National Key Research and Development program of China (2024YFA1410700, 2021YFA1200700); National Natural Science Foundation of China (62474065, T2222025, 62174053); Natural Science Foundation of Chongqing (CSTB2024NSCQ-JQX0005); Shanghai Science and Technology Innovation Action Plan (24QA2702300 and 24YF2710400); National Postdoctoral Program (GZB20240225); Fundamental Research Funds for the Central Universities

Abstract: Tunneling diodes hold significant promise for future rectification in the terahertz and visible light spectra thanks to their femtosecond-scale transit-time tunneling capabilities. In this work, we present TiN/ZnO/Pt fin tunneling diodes (FTDs) with tunneling distances of 10 nm and 5 nm that demonstrate remarkable characteristics, including ultrahigh asymmetry (1.6×104 for 10 nm device and 1.6×103 for 5 nm device), high responsivity (25.3 V-1 for 10 nm device and 28.3 V-1 for 5 nm device) at zero bias, surpassing the thermal voltage limit of conventional Schottky diode and low turn-on voltage (Von) of approximately 100 mV for both devices, making them ideal for power conversion applications. Using technology computer-aided design (TCAD) simulations, the observed asymmetry in electronic transport is attributed to the transition between Fowler-Nordheim tunneling (FNT) and trap-assisted tunneling (TAT) under different biasing conditions, as illustrated by the corresponding energy band profiles. Furthermore, by integrating the FTDs, we design a rectifier bridge circuit that exhibits full-wave rectification behavior, validated through Spice simulations for THz-band operations. This advancement offers a highly efficient solution for THz-band energy conversion and effective detection applications.

Key words: fin tunneling diode, TCAD, rectifier bridge, spice simulations

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