Transparent Ga-doped zinc oxide-based window heaters fabricated by pulsed laser deposition

• Published in: Journal of crystal growth Vol. 310; no. 14; pp. 3303 - 3307
• Main Authors: Ahn, Byung Du, Oh, Sang Hoon, Hong, Dae Ung, Shin, Dong Hyuk, Moujoud, Abderrafia, Kim, Hyun Jae
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2008; Elsevier
• Subjects: A1. Defects; A1. Doping; A1. Impurities; B2. Semiconducting II–VI materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Ii-vi semiconductors; Laser deposition; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Physics; 78.20.−e; 72.80.Ey; B2. Semiconducting II–VI materials; 73.61.Ga; A1. Doping; 68.55.Ln; A1. Impurities; A1. Defects; Transparency; Electrical conductivity; Electrical properties; Doping; Visible spectra; 78.20.-e; Pulsed laser deposition; Gallium additions; Thin films; II-VI semiconductors; Optical properties; Zinc oxide; B2. Semiconducting II-VI materials
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/j.jcrysgro.2008.04.014

Ga-doped ZnO (GZO) thin films were prepared on glass substrates via pulsed laser deposition for window heater applications in the automobile industry. The structural, electrical, and optical properties of these films were investigated for their dependencies on Ga 2O 3 content and substrate temperature. GZO films with a resistivity of 2.14×10 −4 Ω cm and transparency above 90% in the visible range were obtained. GZO line heaters were patterned on glass substrates, and they heated rapidly from room temperature to 88.2 °C in 48 s at an applied voltage of 12 V. These results demonstrate the possibility of using GZO thin films as effective transparent heaters.