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
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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
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发表时间:
2023
影响因子:
3.1
通讯作者:
Kohn, Erhard
中科院分区:
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
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.
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影响因子:
1.9
作者:
Shane Stein;D. Khachariya;S. Pavlidis
通讯作者:
S. Pavlidis
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
影响因子:
2.3
作者:
Narita, Tetsuo;Sakurai, Hideki;Kachi, Tetsu
通讯作者:
Kachi, Tetsu
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
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
Y. Acharya
通讯作者:
Y. Acharya