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Photoluminescence from Anodic Aluminum Oxide Formed via Etidronic Acid Anodizing and Enhancing the Intensity
Title: | Photoluminescence from Anodic Aluminum Oxide Formed via Etidronic Acid Anodizing and Enhancing the Intensity |
Authors: | Kikuchi, Tatsuya Browse this author →KAKEN DB | Akiya, Shunta Browse this author | Kunimoto, Kaito Browse this author | Suzuki, Ryosuke O. Browse this author →KAKEN DB | Natsui, Shungo Browse this author →KAKEN DB |
Keywords: | aluminum | anodizing | anodic aluminum oxide | etidronic acid | photoluminescence |
Issue Date: | 1-Jun-2020 |
Publisher: | Japan Institute Metals and Materials |
Journal Title: | Materials transactions |
Volume: | 61 |
Issue: | 6 |
Start Page: | 1130 |
End Page: | 1137 |
Publisher DOI: | 10.2320/matertrans.MT-M2020010 |
Abstract: | Photoluminescence (PL) emission from anodic aluminum oxide (AAO) formed by etidronic acid anodizing was investigated via fluorescence spectroscopy. Highly pure aluminum plates were anodized in an etidronic acid solution under various operating conditions. PL emission from the typical AAO film was identified with an approximately 250-275-nm range in excitation and a 375-450-nm range in emission, and this distribution was greatly different from the AAO film formed by typical carboxylic acid treatment. The PL intensity increased with the decrease of the concentration of etidronic acid solution. The intensity also increased with anodizing time and subsequent thermal treatment, whereas excess anodizing and high temperature treatment caused an intensity decrease. The AAO film consisted of an outer oxide containing incorporated etidronate anions and a thin honeycomb inner oxide without anions, and the oxygen vacancy localized in the AAO film and anion distribution strongly affected the PL intensity. The appropriate operating condition through anodizing in 0.05M etidronic acid for 40 h and subsequent thermal treatment at 773K for 2 h caused the maximum enhancement of the PL emission. |
Type: | article |
URI: | http://hdl.handle.net/2115/78770 |
Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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