The effect of precipitation on the optical properties of Al-Zn thin films

✍ Scribed by F Abd El-Salam; AM Ibraheim; A.H. Ammar

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 640 KB
• Volume: 48
• Category: Article
• ISSN: 0042-207X
• DOI: 10.1016/s0042-207x(96)00224-2

✦ Synopsis

The optical constants n and k of AI-40 wt% Zn alloy thin films deposited at room temperature were calculated using a transmission spectrum in the wavelength range from 2.5 to 20pm. The thickness of the films ranged from 10 to 85 nm. The investigated samples were aged at 373 K and 473 K for 1 h and some microcharacteristics ofAl-Zn alloy films such as the free charge concentration N, the relaxation time z, the static conductivity u, the electron velocity at Fermi surface Vf and Fermi energy were determined.

The effective absorption assumed the value 63.7% and the absorption due to bound electrons is therefore 36.3%. The role of the solute atoms (Zn) was considered to explain the results.