中国物理B ›› 2023, Vol. 32 ›› Issue (2): 27302-027302.doi: 10.1088/1674-1056/ac81ad

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Demonstration and modeling of unipolar-carrier-conduction GaN Schottky-pn junction diode with low turn-on voltage

Lijian Guo(郭力健), Weizong Xu(徐尉宗), Qi Wei(位祺), Xinghua Liu(刘兴华), Tianyi Li(李天义), Dong Zhou(周东), Fangfang Ren(任芳芳), Dunjun Chen(陈敦军), Rong Zhang(张荣), Youdou Zheng(郑有炓), and Hai Lu(陆海)   

  1. School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
  • 收稿日期:2022-04-19 修回日期:2022-06-23 接受日期:2022-07-18 出版日期:2023-01-10 发布日期:2023-01-31
  • 通讯作者: Weizong Xu, Hai Lu E-mail:wz.xu@nju.edu.cn;hailu@nju.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U2141241, 62004099, 61921005, and 91850112).

Demonstration and modeling of unipolar-carrier-conduction GaN Schottky-pn junction diode with low turn-on voltage

Lijian Guo(郭力健), Weizong Xu(徐尉宗), Qi Wei(位祺), Xinghua Liu(刘兴华), Tianyi Li(李天义), Dong Zhou(周东), Fangfang Ren(任芳芳), Dunjun Chen(陈敦军), Rong Zhang(张荣), Youdou Zheng(郑有炓), and Hai Lu(陆海)   

  1. School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
  • Received:2022-04-19 Revised:2022-06-23 Accepted:2022-07-18 Online:2023-01-10 Published:2023-01-31
  • Contact: Weizong Xu, Hai Lu E-mail:wz.xu@nju.edu.cn;hailu@nju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U2141241, 62004099, 61921005, and 91850112).

摘要: By introducing a thin p-type layer between the Schottky metal and n-GaN layer, this work presents a Schottky-pn junction diode (SPND) configuration for the GaN rectifier fabrication. Specific unipolar carrier conduction characteristic is demonstrated by the verification of temperature-dependent current-voltage (I-V) tests and electroluminescence spectra. Meanwhile, apparently advantageous forward conduction properties as compared to the pn diode fabricated on the same wafer have been achieved, featuring a lower turn-on voltage of 0.82 V. Together with the analysis model established in the GaN SPND for a wide-range designable turn-on voltage, this work provides an alternative method to the GaN rectifier strategies besides the traditional solution.

关键词: GaN Schottky-pn junction diode (SPND), unipolar-carrier-conduction, low turn-on voltage

Abstract: By introducing a thin p-type layer between the Schottky metal and n-GaN layer, this work presents a Schottky-pn junction diode (SPND) configuration for the GaN rectifier fabrication. Specific unipolar carrier conduction characteristic is demonstrated by the verification of temperature-dependent current-voltage (I-V) tests and electroluminescence spectra. Meanwhile, apparently advantageous forward conduction properties as compared to the pn diode fabricated on the same wafer have been achieved, featuring a lower turn-on voltage of 0.82 V. Together with the analysis model established in the GaN SPND for a wide-range designable turn-on voltage, this work provides an alternative method to the GaN rectifier strategies besides the traditional solution.

Key words: GaN Schottky-pn junction diode (SPND), unipolar-carrier-conduction, low turn-on voltage

中图分类号:  (III-V semiconductors)

  • 73.61.Ey
85.30.De (Semiconductor-device characterization, design, and modeling) 85.30.-z (Semiconductor devices)