The effect of electro-annealing on the electrical properties of ITO film on colorless polyimide substrate

✍ Scribed by Dong-ho Lee; Shang-hun Shim; Jin-sik Choi; Keun-byoung Yoon

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 592 KB
• Volume: 254
• Category: Article
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2008.01.078

✦ Synopsis

The effect of different annealing methods on the sheet resistance of indium tin oxide (ITO) on polyimide (PI) substrate has been investigated. ITO thin films were prepared by RF magnetron sputtering in pure Ar gas and electro-annealing, this was carried out in the flow of an electric current at several temperatures between 100 and 180 8C in air. Electro-and thermal annealing were compared in order to confirm differences between the electrical, optical and microstructural properties of the ITO thin films. As electro-annealing induced the predominant growth of crystallites of ITO thin films along (4 0 0) plane, the sheet resistance of ITO films that were electro-annealed for 2 mA at 180 8C considerably decreased from 50 to 28 V/cm 2 .