Impact of processing and growth conditions on the site-catalyzed patterned growth of GaAs nanowires by molecular beam epitaxy
Impact of processing and growth conditions on the site-catalyzed patterned growth of GaAs nanowires by molecular beam epitaxy
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加工和生长条件对分子束外延 GaAs 纳米线位点催化图案化生长的影响
DOI:
10.1117/12.2274669
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Eldada, Louay A.
中科院分区:
文献类型:
--
作者:
Sharma, Manish;Kasanaboina, Pavan K.;Iyer, Shanthi;Campo, Eva M.;Dobisz, Elizabeth A.;Eldada, Louay A.
We report on the site-selective growth of >90% vertical GaAs nanowires (NWs) on Si (111) using self-assisted molecular beam epitaxy. The influences of growth parameters (pre-growth Ga opening time, V/III flux ratio) and processing conditions (reactive ion etching (RIE) and HF etching time) are investigated for different pitch lengths (200- 1000 nm) to achieve vertical NWs. The processing variables determine the removal of the native oxide layer and the contact angle of Ga-droplet inside the patterned hole that are critical to the vertical orientation of the NWs. Pre-growth Ga-opening time is found to be a crucial factor determining the size of the droplet in the patterned hole, while the V/III beam equivalent pressure (BEP) ratio influenced the occupancy of the holes due to the axial growth of NWs being group-V limited.
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影响因子:
3.5
作者:
Haas, F.;Sladek, K.;Hardtdegen, H.
通讯作者:
Hardtdegen, H.
影响因子:
10.8
作者:
Tomioka, Katsuhiro;Motohisa, Junichi;Fukui, Takashi
通讯作者:
Fukui, Takashi
影响因子:
--
作者:
H. Kim;Jin;E. Chae;Jeong;B. Oh
通讯作者:
B. Oh
影响因子:
4
作者:
Hertenberger, S.;Funk, S.;Koblmueller, G.
通讯作者:
Koblmueller, G.