Damage-free top-down processes for fabricating two-dimensional arrays of 7 nm GaAs nanodiscs using bio-templates and neutral beam etching
Damage-free top-down processes for fabricating two-dimensional arrays of 7 nm GaAs nanodiscs using bio-templates and neutral beam etching
复制标题
使用生物模板和中性束蚀刻制造 7 nm GaAs 纳米盘二维阵列的无损伤自上而下工艺
DOI:
10.1088/0957-4484/22/36/365301
复制
发表时间:
2011
期刊:
影响因子:
3.5
通讯作者:
S. Samukawa
中科院分区:
文献类型:
--
作者:
Xuan;Chi;R. Tsukamoto;P. Mortemousque;K. Itoh;Y. Ohno;S. Samukawa
The first damage-free top-down fabrication processes for a two-dimensional array of 7 nm GaAs nanodiscs was developed by using ferritin (a protein which includes a 7 nm diameter iron core) bio-templates and neutral beam etching. The photoluminescence of GaAs etched with a neutral beam clearly revealed that the processes could accomplish defect-free etching for GaAs. In the bio-template process, to remove the ferritin protein shell without thermal damage to the GaAs, we firstly developed an oxygen-radical treatment method with a low temperature of 280 °C. Then, the neutral beam etched the defect-free nanodisc structure of the GaAs using the iron core as an etching mask. As a result, a two-dimensional array of GaAs quantum dots with a diameter of ∼ 7 nm, a height of ∼ 10 nm, a high taper angle of 88° and a quantum dot density of more than 7 × 1011 cm − 2 was successfully fabricated without causing any damage to the GaAs.
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DOI:
10.1016/j.physe.2009.12.036
发表时间:
2010-09
影响因子:
3.3
作者:
R. Oshima;A. Takata;Y. Shoji;K. Akahane;Y. Okada
通讯作者:
R. Oshima;A. Takata;Y. Shoji;K. Akahane;Y. Okada
DOI:
--
发表时间:
2009
期刊:
Journal of Crystal Growth 311
影响因子:
--
作者:
Ayami Takata;Ryuji Oshima;Yasushi Shoji;Yoshitaka Okada
通讯作者:
Yoshitaka Okada
影响因子:
3.5
作者:
C.-H.Huang;X.-Y.Wang;M.Igarashi;A.Murayama;Y.Okada;I.Yamashita;S.Samukawa
通讯作者:
S.Samukawa
影响因子:
2.3
作者:
M. Igarashi;R. Tsukamoto;C.-H. Huang;I. Yamashita;and S. Samukawa
通讯作者:
and S. Samukawa