AVS 59th Annual International Symposium and Exhibition
    Nanomanufacturing Science and Technology Focus Topic Tuesday Sessions
       Session NM-TuP

Paper NM-TuP3
Photoluminescence Enhancement of Aluminum Surfaces with Various Shaped Nanostructures Filled with Metallopfthalocyanines and Organic Dye Molecules

Tuesday, October 30, 2012, 6:00 pm, Room Central Hall

Session: Topics in Nanomanufacturing Poster Session
Presenter: A. Ishii, Kanto Gakuin University, Japan
Authors: A. Ishii, Kanto Gakuin University, Japan
T. Shimizu, Kanto Gakuin University, Japan
H. Kato, Kanto Gakuin University, Japan
T. Kamino, Kanto Gakuin University, Japan
S. Takemura, Kanto Gakuin University, Japan
T. Hiramatsu, Kanto Gakuin University, Japan
Correspondent: Click to Email
Nanostructures such as linked-crater and highly-oriented pillared structures made of anodized aluminum oxide were fabricated on an Al surface by combination process of chemical and electrochemical treatments. Crater–shaped structures were initially created on the alumnum surface by the chemical surface treatment. Successive anodization condition created the different sized linked-crater structures. A highly-oriented pillared structure was fabricated on an Al surface by chemical and electrochemical multi-process. Based on the initial structure fabricated by chemical surface treatments, successive anodization proceeded in the fabrication of well-ordered characteristic nanoscale patterns with highly-oriented aligned trenches on Al surface such as a groove-pattern structure. Successive surface treatment using Semi Clean assisted in fabrication of ordered finer nanoscale structures such as highly-oriented pillared structure. The present work also intended to make an organic nanoscale pattern using highly-oriented pillared structure as a template by filling of dye molecules, namely, rhodamine B (RB), brilliant green (BG) dissolved in acetonitrile, copper phthalocyanine (CuPc), iron phthalocyanine (FePc) and Cobalt phthalocyanine (CoPc) dissolved in toluene in order to functionalize the surfaces. The cross section analysis demonstrated that the dye molecules were filling the trenches along the linked-crater structure and the highly-oriented pillared structure by dynamic force microscopy (DFM) measurement. Photoluminescence measurements showed that RB emission peaks appeared in the wavelength range of 600-640 nm. In the case of BG emission peaks appeared in the wavelength range of 450-500 nm. In the case of metal phthalocyanines, CuPc, FePc and CoPc, the emission peaks appeared in the wavelength range of 450-550 nm. The authors confirmed that the significant emission enhancement happened to dye molecules filling linked-crater and highly-oriented pillared structures fabricated on the aluminum surface. The structure of RB filling aluminum nano-structures were investigated by FT-IR measurements. It was found that the intensity of Al-O mode at 800-1000 cm-1 in the case of highly-oriented pillared structure was larger than that in the case of the linked-crater structure while the intensity of Al-O mode at 1000 cm-1 was comparable between two structures. It was also found that the emission peaks appeared in the wavelength range of 1200-1700 cm-1 in both cases of linked-crater and highly-oriented pillared structures. This work was aided by MEXT-supported Program for the Strategic Research Foundation at Private Universities.