The development of infrared reflection properties of sputtered aluminum-doped zinc oxide films

BABAYİĞİT CİNALİ M., DUYAR COŞKUN Ö.

VACUUM, vol.205, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 205
  • Publication Date: 2022
  • Doi Number: 10.1016/j.vacuum.2022.111438
  • Journal Name: VACUUM
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Computer & Applied Sciences, INSPEC, Metadex
  • Keywords: AZO thin film, RF magnetron sputtering, Sputtering power, Infrared reflection, ZNO THIN-FILMS, RAY PHOTOELECTRON-SPECTROSCOPY, ELECTRICAL-PROPERTIES, OPTICAL-PROPERTIES, AZO, DEPOSITION, ENERGY, TEMPERATURE, PERFORMANCE, COATINGS
  • Hacettepe University Affiliated: Yes

Abstract

Aluminum-doped zinc oxide (AZO) films were prepared on glass substrates using radio frequency (RF) magnetron sputtering technique. The sputtering power ranged from 25 to 100 W. Effects of the sputtering power on optical properties, crystal structure, electrical properties and infrared reflection of the AZO films were systematically investigated by UV-VIS-NIR spectrophotometry, XRD, SEM, XPS, Hall measurement and FTIR, respectively. The results reveal that the grain size is not the only parameter in determining the electrical properties of AZO films, but O-II/(O-I + O-II + O-III) ratio and Al composition are very important. The AZO films deposited at P = 75 W exhibits the lowest electrical resistivity, highest mobility and carrier concentration. The film also has the lowest packing density as well as the highest average visible transmission with a value of 84.9%. The average infrared reflection of 52% makes it a hopeful candidate for low-emissivity applications.