Fabrication of size-tunable, periodic Si nanohole arrays by plasma modified nanosphere lithography and anisotropic wet etching

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Title:	Fabrication of size-tunable, periodic Si nanohole arrays by plasma modified nanosphere lithography and anisotropic wet etching
Authors:	李度;Cheng, S.L.;Lin, Y.H.;Lee, S.W.;Lee, T.;Chen, H.;Hu, J.C.;Chen, L.T.
Contributors:	工學院化學工程與材料工程學系
Keywords:	Antireflection;Condensed matter: electronic structure, electrical, magnetic, and optical properties;Condensed matter: structure, mechanical and thermal properties;Cross-disciplinary physics: materials science;rheology;Exact sciences and technology;Nanohole;Nanosphere lithography;Physics;Plasma;Wet etching
Date:	2012-12-15
Issue Date:	2026-04-21 14:04:42 (UTC+8)
Publisher:	Elsevier;Amsterdam: Elsevier B.V
Abstract:	摘要： ► We propose a new technique to fabricate periodic Si nanohole arrays on (001)Si. ► The sizes of Si nanoholes could be tuned by adjusting the KOH etching time. ► The nanohole-structured (001)Si surfaces exhibit strong antireflection properties. ► The combined approach can be extended to the selective-area fabrication of nanohole arrays. In this study, we propose a new, facile and efficient method to define the desired patterns on Si surfaces and to fabricate periodic arrays of size- and position-controllable Si nanoholes on blank- and pre-patterned (001)Si substrates, which is based on the O2 plasma modified nanosphere lithography with an anisotropic wet etching technique. In contrast to earlier approaches, no additional thin-film deposition equipments and metal film hard masks are needed for this method. The Si nanohole arrays exhibit the same hexagonal arrangement as the initial colloidal nanospheres template. The sizes of the Si nanoholes can be tuned from 150nm to 480nm by varying the etching time. The Si substrates with nanohole-textured surfaces exhibit strong antireflection properties. UV–Vis spectroscopic measurements revealed that by increasing the nanohole size, the optical reflectance of the nanohole-structured (001)Si surfaces was gradually decreased down to less than 8%. Since the nanohole sizes, shapes and spacings can be readily controlled by adjusting the diameters of the colloidal nanospheres and anisotropic wet etching conditions, the combined approach presented here provides the capability to fabricate a variety of nanohole array structures on various Si-based substrates without complex lithography. 出版者： Amsterdam: Elsevier B.V 出版日期： 2012-12-15 出處： Applied Surface Science, 2012-12, Vol.263, p.430-435 版權： 2012 Elsevier B.V. 版權： 2014 INIST-CNRS 識別號： ISSN: 0169-4332 識別號： EISSN: 1873-5584 識別號： DOI: 10.1016/j.apsusc.2012.09.073
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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