| Autor: |
Seon-Hoon Kim, Haeng Yun Jung, Min-Woo Seo, Ju Hyeon Choi, Jung-Hwan In |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Infrared Sensors, Devices, and Applications IX. |
| DOI: |
10.1117/12.2529690 |
| Popis: |
A diamond-like carbon thin film was deposited on the outer face of the germanium (Ge) window to protect the infrared lenses from a harsh environment in automotive application. Infrared transmittance and residual stress of a tetrahedral amorphous carbon (ta-C) thin film by a filtered cathodic vacuum arc (FCVA) source were investigated to increase the lifetime of a Ge window. They were found to have a trade-off relation about the change of the substrate pulse voltage. By introducing methane gas in FCVA deposition process, a hydrogenated ta-C (ta-C:H) thin film of which both IR transmittance and residual stress was improved could be obtained. A Ge window coated with ta-C:H thin film with 1.43 μm thickness showed anti-reflective effect in long-wave infrared. The hardness of ta-C:H thin film on Ge window was higher than 30 GPa. Adhesion, severe abrasion, temperature, humidity and salt solubility tests were carried out in accordance with MIL-C-48497A. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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