@inproceedings{e217980c240442368ebbe15285e9d55e,
title = "Feasibility of Ge double quantum dots with high symmetry and tunability in size and inter-dot spacing",
abstract = "We report the tunability of the sizes and inter-dot spacings of Ge coupled quantum dots (QDs) using nano-spacer technology in combination with selective oxidation of Si0.85Ge0.15. Spherical-shaped Ge QDs were formed at each sidewall corner of the nano-patterned Si3N4 ridges by thermal oxidation of poly-SiGe spacer layers encapsulating the Si3N4 nano-ridges. The diameters of the Ge spherical QDs are essentially determined by geometrical height, width, and length of the nano-spacer islands of poly-SiGe, which are tunable by adjusting the process times of their deposition and etch back. The inter-dot spacing between the Ge DQDs are controllable by adjusting the widths of the lithographically-patterned Si3N4 ridges and the thermal oxidation times. Our self-organization and self-alignment approach achieved high symmetry within the Ge DQDs in terms of the individual QD sizes as well as the coupling barriers between the QDs and external electrodes in close proximity.",
keywords = "Ge, PhotoMOSFETs, SOI",
author = "Peng, {Kang Ping} and Huang, {Tsung Lin} and Thomas George and Lin, {Horng Chih} and Li, {Pei Wen}",
year = "2019",
month = jun,
doi = "10.23919/SNW.2019.8782958",
language = "English",
series = "2019 Silicon Nanoelectronics Workshop, SNW 2019",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2019 Silicon Nanoelectronics Workshop, SNW 2019",
address = "美國",
note = "24th Silicon Nanoelectronics Workshop, SNW 2019 ; Conference date: 09-06-2019 Through 10-06-2019",
}