Journal of Semiconductors, Volume. 45, Issue 11, 112502(2024)

First demonstration of a self-aligned p-channel GaN back gate injection transistor

Yingjie Wang1,2, Sen Huang1,2、*, Qimeng Jiang1,2、**, Jiaolong Liu1,2, Xinhua Wang1,2, Wen Liu3, Liu Wang1,2, Jingyuan Shi1, Jie Fan1, Xinguo Gao1, Haibo Yin1, Ke Wei1, and Xinyu Liu1,2
Author Affiliations
  • 1High-Frequency High-Voltage Device and Integrated Circuits Research and Development Center, Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, China
  • 2School of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3China School of Advanced Technology, Xi'an Jiaotong–Liverpool University, Suzhou 215123, China
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    Figures & Tables(4)
    (Color online) (a) The schematic view and SEM images of self-aligned p-channel GaN back gate injection transistors (SA-BGITs) with 2DEG as the gate; (b) schematic process flow of the SA-BGITs. (c) I−V curves of p-type Ohmic contacts and (d) n-type Ohmic contacts in the form of TLM patterned on the heterostructure.
    (Color online) (a) DC dual-sweep transfer curves of SA-BGITs (LG = 3 μm) measured at VDS of −1 V. (b) The increase in IG lead to an increase in power consumption in CL.
    (Color online) (a) Output characterizes of SA-BGITs (LG = 3 μm) measured at moderate gate bias. (b) Output characterizes of SA-BGITs with LG of 1 μm (purple), 2 μm (blue), and 3 μm (red). (c) The gate breakdown of SA-BGITs (LG = 3 μm).
    • Table 1. Benchmark of GaN-based p-FETs.

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      Table 1. Benchmark of GaN-based p-FETs.

      AffiliationION/IOFFLG(μm)ID,MAX(mA/mm)SS (mV/dec)ΔVth (V)
      HKUST[27]10728230< 0.1
      MIT[31]1020.2100800
      UND[32]106241500
      HRL[33]1060.51.65304
      PKU[34]10525.415001.1
      XDU[35]10221.21400< 0.1
      SUSTC[15]1062120160
      SINANO-CAS[36]10731.12250
      IMECAS[20, 37]10624.91070.7
      This work10731.61740.2
      This work10219.90.1
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    Yingjie Wang, Sen Huang, Qimeng Jiang, Jiaolong Liu, Xinhua Wang, Wen Liu, Liu Wang, Jingyuan Shi, Jie Fan, Xinguo Gao, Haibo Yin, Ke Wei, Xinyu Liu. First demonstration of a self-aligned p-channel GaN back gate injection transistor[J]. Journal of Semiconductors, 2024, 45(11): 112502

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    Paper Information

    Category: Research Articles

    Received: May. 17, 2024

    Accepted: --

    Published Online: Dec. 23, 2024

    The Author Email: Huang Sen (SHuang), Jiang Qimeng (QMJiang)

    DOI:10.1088/1674-4926/24050027

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