Analysis of Vertical GaN JBS and p-n Diodes by Mg Ion Implantation and Ultrahigh-Pressure Annealing

Analysis of Vertical GaN JBS and p-n Diodes by Mg Ion Implantation and Ultrahigh-Pressure Annealing
复制标题

通过镁离子注入和超高压退火分析垂直 GaN JBS 和 p-n 二极管

DOI:
10.1109/ted.2023.3339592
复制
发表时间:
2023
影响因子:
3.1
通讯作者:
Kohn, Erhard
Kohn, Erhard
中科院分区:
工程技术2区
文献类型:
--
作者:
Stein, Shane R.;Khachariya, Dolar;Mecouch, Will;Mita, Seiji;Reddy, Pramod;Tweedie, James;Sierakowski, Kacper;Kamler, Grzegorz;Bockowski, Michal;Kohn, Erhard

文献摘要

参考文献

被引文献

相似文献

报道了用镁离子注入和超高压退火(UHPA)形成的垂直GaN结势垒肖特基(JBS)二极管。二极管的静态导通特性显示,理想系数为1.05,导通电压为~0.7V,电流整流比为,低的差动比导通电阻随肖特基条纹宽度变化,与解析模型符合较好。反向漏电流对肖特基条纹宽度的依赖关系也符合解析模型。在同一晶片上制作的注入p-n结二极管具有正温度系数的反向偏置雪崩击穿,但正向电流受到串联势垒的限制。P-n二极管的温度相关电流-电压测量证实了注入的p-n结的存在,并揭示了额外的0.43 eV势垒,我们假设它来自p-肖特基接触,并与p-n结形成背靠背的第二个二极管。对注入的p-n二极管、用故意p-肖特基接触制造的外延p-n二极管的电容-电压特性的分析支持了这一解释,并与TCAD模拟进行了比较。最终,p-肖特基接触的存在不会阻碍JBS二极管的工作。扩散感知设计和/或扩散抑制的使用代表了GaN功率器件中镁离子注入技术的未来发展方向。
We report on vertical GaN junction barrier Schottky (JBS) diodes formed by Mg ion implantation and ultrahigh -pressure annealing (UHPA). The static ON-state characteristics of the diodes show an ideality factor of 1.05, a turn-on voltage of ~0.7 V, a current rectification ratio of, and a low differential specific ON-resistance that scales with Schottky stripe width in fair agreement with the analytical model. The reverse leakage dependence on Schottky stripe width also agrees well with the analytical model. Implanted p-n junction diodes fabricated on the same wafer exhibit avalanche breakdown in reverse bias with a positive temperature coefficient, but the forward current is limited by a series barrier. Temperature-dependent current–voltage measurements of th p-n diodes verify the presence of the implanted p-n junction and reveal an additional 0.43-eV barrier, which we hypothesize arises from a p-Schottky contact and forms a second diode back-to-back with the p-n junction. This interpretation is supported by analysis of the capacitance–voltage characteristics of the implanted p-n diodes, epitaxial p-n diodes fabricated with intentional p-Schottky contacts, and comparison to TCAD simulations. Ultimately, the presence of the p-Schottky contact does not hinder JBS diode operation. The use of diffusion-aware designs and/or diffusion reduction represents future directions for Mg implantation technology in GaN power devices.
具有离子注入栅极的 GaN 垂直 JFET 的设计和性能分析
DOI: 10.1088/1361-6641/ac9d00
发表时间: 2022
影响因子: 1.9
作者:
Shane Stein;D. Khachariya;S. Pavlidis
通讯作者: S. Pavlidis
镁注入垂直 GaN 结势垒肖特基整流器,具有低导通电阻、低导通电压和近乎理想的无损击穿电压
DOI: 10.1063/5.0106321
发表时间: 2022
影响因子: 4
作者:
M. Matys;Kazuki Kitagawa;T. Narita;T. Uesugi;J. Suda;T. Kachi
通讯作者: T. Kachi
DOI: 10.7567/1882-0786/ab4934
发表时间: 2019-11-01
影响因子: 2.3
作者:
Narita, Tetsuo;Sakurai, Hideki;Kachi, Tetsu
通讯作者: Kachi, Tetsu
DOI: 10.1109/ted.2018.2875534
发表时间: 2018-10
影响因子: 3.1
作者:
S. Kotzea;A. Debald;M. Heuken;H. Kalisch;A. Vescan
通讯作者: S. Kotzea;A. Debald;M. Heuken;H. Kalisch;A. Vescan
带隙和器件常数的温度依赖性对结型二极管 I-V 特性的影响
DOI: --
发表时间: 2001
期刊:
影响因子: --
作者:
Y. Acharya
通讯作者: Y. Acharya