@inproceedings{b46834f974ef4da187c6e3a69aa21a99,
title = "Process requirements for continued scaling semiconductor devices - The needs for controlling both number and position of impurity atoms",
abstract = "Continued challenge for higher-performance semiconductor device requires the controlled doping of single-dopant atom to control the electrical properties. Here we report the fabrication of semiconductors with both dopant number and position controlled by using a one-by-one doping technique, which we call {"}single-ion implantation (SII){"}. This technique enables us to implant dopant ions one-by-one into a fine semiconductor region until the necessary number is reached. Electrical measurements reveal that the threshold voltage (Vth) fluctuation for the ordered dopant arrays is less than for conventional random doping. We also find that the device with ordered dopant array exhibits two times the lower average value (-0.4V) of Vth shift than the random dopant distribution (-0.2V). We conclude that the observed lower value originates from the uniformity of electrostatic potential in the channel region due to the ordered distribution of dopant atoms. The ordered dopant arrays may increase the prospects of fluctuation-controlled advanced silicon transistors.",
author = "Takahiro Shinada and Tomonori Kurosawa and Takahiro Kobayashi and Hideki Nakayama and Syu, {En I.} and Iwao Ohdomari",
year = "2006",
month = jan,
day = "1",
doi = "10.1109/ICSICT.2006.306297",
language = "English",
isbn = "1424401615",
series = "ICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology, Proceedings",
publisher = "IEEE Computer Society",
pages = "448--449",
booktitle = "ICSICT-2006",
note = "ICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology ; Conference date: 23-10-2006 Through 26-10-2006",
}