Neutral beam etching for device isolation in AlGaN/GaN HEMTs
Neutral beam etching for device isolation in AlGaN/GaN HEMTs
复制标题
用于 AlGaN/GaN HEMT 器件隔离的中性束蚀刻
DOI:
10.1002/pssa.201600617
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
T. Suemitsu
中科院分区:
文献类型:
--
作者:
F. Hemmi;C. Thomas;Y. C. Lai;A. Higo;A. Guo;S. Warnock;J. A. del Alamo;S. Samukawa;T. Otsuji;T. Suemitsu
In this article, we report a suppression of leakage current and an improvement of isolation breakdown voltage on GaN‐based high electron mobility transistors (HEMTs) by means of neutral beam (NB) etching. The plasma damage during dry etching process is one of the key reasons for an isolation leakage current, gate leakage current, and current collapse in GaN HEMTs. Since NB etching is virtually free from electrical charges and has few UV photons, it is possible to reduce plasma damage on an etched surface and improve device characteristics. In this work, we introduced NB etching to the device isolation process of GaN HEMTs and characterized isolation leakage currents at DC and step‐stress bias conditions. We also measured the breakdown voltages on two‐terminal test element arrays. We compared the characteristics with samples etched by conventional plasma‐like beam (PB) etching. Our results suggest that NB etching reduces the leakage current through the etched surface of the mesa isolation, which results in superior breakdown voltages.
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DOI:
--
发表时间:
2008
期刊:
Thin Solid Films 516
影响因子:
--
作者:
Miao Zhang;・広川 二郎・安藤 真;Wakana Hara;Wakana Hara
通讯作者:
Wakana Hara
DOI:
10.1088/0022-3727/41/2/024006
发表时间:
2008
期刊:
Journal of Physics D: Applied Physics
影响因子:
--
作者:
S. Samukawa;Y. Ishikawa;Keiji Okumura;Y. Sato;K. Tohji;T. Ishida
通讯作者:
T. Ishida
影响因子:
1.5
作者:
Retsuo Kawakami;T. Inaoka;K. Tominaga;Akinobu Kuwahara;T. Mukai
通讯作者:
T. Mukai
影响因子:
4.9
作者:
Green, BM;Chu, KK;Eastman, LF
通讯作者:
Eastman, LF
影响因子:
2.1
作者:
Retsuo Kawakami;T. Inaoka;Shingo Minamoto;Yasuyuki Kikuhara
通讯作者:
Yasuyuki Kikuhara