Photoluminescence enhancement of nanoporous alumina using one-step anodization of high- and low-purity aluminum at room temperature

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• 作者：C.K. Chung ; ^{ckchung@mail.ncku.edu.tw} ; B.Y. Chu ; C.H. Tsai ; C.R. Hsu
• 关键词：Anodic aluminum oxide ; Nanoporous alumina ; Nanomaterials ; Luminescence ; Temperature ; Purity
• 刊名：Materials Letters
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：190
• 期：Complete
• 页码：157-160
• 全文大小：943 K
• 卷排序：190

文摘

Photoluminescence (PL) of anodic aluminum oxide (AAO) from high-and-low-purity Al was studied. The high-purity Al and high electrolyte temperature benefit the PL performance of AAO. The growth rate and pore size of AAO can be enhanced at 25 °C compared to 5 °C. A little red shift of AAO PL peaks at 25 °C is attributed to the enlarged mean pore size. The origin of PL at 417 nm could be from F+-centers and that at 480 nm from acid ions defects.