Self-ordered Porous Anodic Alumina Templates by a Combinatory Anodization Technique in Oxalic and Selenic Acids

被引：4

作者：

Ahmadzadeh, M. ^{[1
]}

Kashi, M. Almasi ^{[1
,2
]}

Noormohammadi, M. ^{[1
]}

Ramazani, A. ^{[1
,2
]}

机构：

[1] Univ Kashan, Dept Phys, Kashan 8731751167, Iran

[2] Univ Kashan, Inst Nanosci & Nanotechnol, Kashan 8731751167, Iran

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2021年 / 50卷 / 8期

关键词：

Two-step anodization; porous anodic alumina; pore ordering; anodization time; selenic acid; NANOPORE ARRAYS; STRUCTURAL FEATURES; OXIDE; TEMPERATURE; GROWTH; ARRANGEMENT; MORPHOLOGY; COLOR; FABRICATION; KINETICS;

D O I：

10.1007/s11664-021-08973-x

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A combinatory two-step anodization technique is presented to prepare self-ordered porous anodic alumina (PAO) templates. The first and second anodization steps are performed in oxalic and selenic acid at 40 V and 45 V, respectively, giving rise to 13-nm-diameter PAOs with high ordering and porosity of 1.4%. The anodization time for the second step is also changed to investigate the effect of the oxide layer thickness on the pore ordering, using field-emission scanning electron microscopy and fast Fourier transform analyses. Increasing the anodization time from 20 min to 1 h considerably improved the ordering and hexagonal domain structures. Further increasing the anodization time up to 8 h continuously deteriorated the ordering of the PAOs, although the nanopore growth rate remained almost constant. The fabrication of small-diameter PAOs in selenic acid is discussed and related to the electric field concentration at the oxide-electrolyte interface at the bottom of pores.

引用

页码：4787 / 4796

页数：10

共 62 条

[1] Tuning the optical properties of nanoporous anodic alumina photonic crystals by control of allowed voltage range via mixed acid concentration [J].