INFRARED OPTICAL-CONSTANTS OF ANODIC ALUMINA FILMS WITH MICROPORE ARRAYS

被引：28

作者：

NAKAMURA, S ^{[1
]}

SAITO, M ^{[1
]}

HUANG, LF ^{[1
]}

MIYAGI, M ^{[1
]}

WADA, K ^{[1
]}

机构：

[1] NATL INST RES INORGAN MAT,TSUKUBA 305,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1992年 / 31卷 / 11期

关键词：

ANODIC ALUMINA FILM; MICROPORE; REFRACTIVE INDEX; INFRARED; POROSITY;

D O I：

10.1143/JJAP.31.3589

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Transmission spectra were measured for anodic alumina films prepared in several acid solutions. The films anodized in a phosphoric acid solution are the most appropriate for use in the infrared range, since impurity absorptions are weak in those films. The refractive indices of the phosphoric-acid films were evaluated by the measurements of transmittance and reflectance. The refractive index decreases either by extending anodization time or by immersing a film in a sulfuric acid solution. This phenomenon is elucidated well by considering pore widening due to the dissolution of alumina. The dependence of refractive index on porosity agreed well with theoretical evaluations.

引用

页码：3589 / 3593

页数：5

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