Fabrication of CNT/Cu thin films by UV irradiation of precursor films involving a Cu(II) complex at room temperature

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05270
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 28030:Nanomaterials-related
• Research Institution: Kogakuin University
• Principal Investigator: Nagai Hiroki 工学院大学, 先進工学部, 准教授 (20559942)
• Co-Investigator(Kenkyū-buntansha): 佐藤 光史 工学院大学, 先進工学部, 教授 (10154105)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 分子プレカーサー法 / 薄膜 / 銅 / 金属錯体 / 光転換

Outline of Final Research Achievements

A copper precursor solution was prepared by designing the ligands of the copper complexes in ethanol. The precursor film was fabricated by applying the solution to a glass substrate. The 254 nm wavelength of UV light with 4 mW cm^-2 intensity was irradiated to the precursor films for 24 h in a clean bench at a temperature of 20-30°C and a humidity of 20-40%. The XRD patterns of the obtained films showed a single copper phase. Forming of copper films was successfully obtained by optical absorption due to the CT absorption band of the complex. However, the resistance of the formed copper film was more than 500 MΩ, due to the presence of organic residues in the film.

Free Research Field

無機化学

Academic Significance and Societal Importance of the Research Achievements

通常は熱により錯体から金属や金属酸化物に転換する分子プレカーサー法を錯体のCT吸収帯による光吸収で銅膜形成が可能であることを実証した。プレカーサー膜への紫外線照射による銅膜形成は，これまでの熱処理の必要性を回避し，分子レベルで制御可能な化学的加工法を実証した。光化学反応の分野においても重要な結果であると考える。