Growth and Fabrication of Quasivertical Current Aperture Vertical Electron Transistor Structures
Growth and Fabrication of Quasivertical Current Aperture Vertical Electron Transistor Structures
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准垂直电流孔径垂直电子晶体管结构的生长和制造
DOI:
10.1002/pssa.202000379
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
O. Ambacher
中科院分区:
文献类型:
--
作者:
P. Döring;R. Driad;S. Leone;S. Müller;P. Waltereit;L. Kirste;V. Polyakov;M. Mikulla;O. Ambacher
The current aperture vertical electron transistor (CAVET) combines the high carrier mobility of the AlGaN/GaN heterostructure with the better electric field distribution of the vertical topology, allowing for higher power densities if compared with lateral high electron mobility transistors (HEMTs). The formation of a current blocking layer (CBL), without degenerating the aperture region and the subsequently overgrown AlGaN/GaN heterostructure is the key building block of such devices. Herein, a comparison of GaN:Mg nonplanar selective area growth (SAG) and Mg‐ion implantation is carried out primarily focusing on structural evolution, Mg distribution, and 2D electron gas (2DEG) performance. The epitaxial growth process in SAG is correlated to local growth increase and ridge development, and then optimized regarding mesa filling. AlGaN/GaN regrowth is analyzed regarding structural evolution after overgrowth and Mg distribution into the GaN channel. Considerably lower Mg‐distribution into subsequently grown layers is detected for implanted samples in agreement with the electrical performance of the overgrown AlGaN/GaN heterostructures. A GaN‐on‐Si quasivertical CAVET structure with an Mg‐implanted CBL and 250 nm channel thickness is fabricated. High surface quality and proper 2DEG performance demonstrate the potential use of GaN‐on‐Si CAVET's using Mg implantation for CBL fabrication.
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DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
S. Heikman;S. Keller;S. Denbaars;U. Mishra;F. Bertram;J. Christen
通讯作者:
J. Christen
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
M. Yang;Meoungwhan Cho;Chinkyo Kim;J. Yi;Jina Jeon;S. Khym;Minhong Kim;Yoonho Choi;Shi;Yong
通讯作者:
Yong
影响因子:
4.9
作者:
Ji, Dong;Agarwal, Anchal;Chowdhury, Srabanti
通讯作者:
Chowdhury, Srabanti
影响因子:
2.1
作者:
G. Pickrell;A. Armstrong;A. Allerman;M. Crawford;K. Cross;C. Glaser;V. Abate
通讯作者:
V. Abate
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
K. Köhler;W. Pletschen;B. Godejohann;S. Müller;H. Menner;O. Ambacher
通讯作者:
O. Ambacher