Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10706038 | Infrared Physics & Technology | 2005 | 5 Pages |
Abstract
The TiO2:Ti film was prepared as an alternative of the absorber layer for infrared thermal detectors. The as-deposited film was composed of TiO2 and Ti with a ratio near 5:1. To improve its absorption in infrared region, the film was etched in the diluted H2O2 solution. The etching process made the film porous and reduced the concentration of the free electron in the etched film, which decrease the reflection of the films and subsequently increase their absorption. The maximum absorption of the acid-treated Ti-based film was about 90% for the infrared radiation near 1500 cmâ1. The resistivity of the etched films has been derived from four probe method with a two-layer model and from infrared spectrum by simulating it with Drude model. The values of resistivity from the two methods are in good agreement.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Atomic and Molecular Physics, and Optics
Authors
Tie Lin, J.L. Sun, F.W. Shi, Z.G. Hu, J. Chen, Junhao Chu,