Tunneling current characteristics by Al+N isoelectronic traps in Si-TFET; first-principles study
Tunneling current characteristics by Al+N isoelectronic traps in Si-TFET; first-principles study
复制标题
Si-TFET 中 Al N 等电子陷阱的隧道电流特性;
DOI:
10.1016/j.mssp.2016.11.031
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
T.Nakayama
中科院分区:
文献类型:
--
作者:
S.Iizuka;Y.Asayama;T.Nakayama
Recent experiments showed that the tunneling current through Si p/n junction is remarkably enhanced when isoelectronic impurity pairs such as Al+N are doped, which is promising for realizing Si tunneling field-effect transistors. To clarify the origin of such enhancement, the tunneling probability of electron carriers assisted by an Al+N isoelectronic trap (IET) in Si p/n junction was studied based on the perturbation theory using the results of first-principles calculations. We found that the enhancement is caused by two factors; (1) IET electronic state is located in the band gap of Si and works to decrease the tunneling length as a stepping stone. (2) Due to the localization feature of IET state, the electronic transition from valence bands to the IET state increases.
DOI:
10.7567/jjap.55.101301
发表时间:
2016
期刊:
Jpn. J. Appl. Phys.
影响因子:
--
作者:
S. Iizuka;T. Nakayama
通讯作者:
T. Nakayama
影响因子:
2.3
作者:
T. Mori;W. Mizubayashi;Y. Morita;S. Migita;K. Fukuda;N. Miyata;T. Yasuda;M. Masahara;H. Ota
通讯作者:
H. Ota
影响因子:
4
作者:
S. Froyen;D. Wood;A. Zunger
通讯作者:
A. Zunger