Affiliation:
1. National Key Laboratory of Light Field Control Science and Technology, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
Abstract
In this study, a lightweight composite polyimide film optic with antireflective coating was prepared using an ion-beam-assisted reactive sputtering method. It exhibited high transmittance in visible (87%, 0.5~0.8 μm), short (86%, 1.8~2.7 μm) and middle (78%, 3.3~5.4 μm) wavelength infrared regions. Additionally, it also showed great optical homogeneity (0.006 λ in RMS and 0.034 λ in PV, λ = 632.8 nm) with smooth surfaces (RMS = 0.786 nm). The thermal stability of the polyimide film was also effectively maintained after the antireflective coating. At the same time, by utilizing the hydrophobic properties of coating materials (Ta2O5/SiO2), the antireflective layer acted as an effective water barrier on the film surface to reduce the water absorption.
Funder
Youth Innovation Promotion Association
Key Program of Chinese Academy of Sciences
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
Reference30 articles.
1. Coloration of Aromatic Polyimides and Electronic Properties of Their Source Materials;Ando;Polym. J.,1997
2. Photophysics, photochemistry, and optical properties of polyimides;Hasegawa;Prog. Polym. Sci.,2001
3. A method to break charge transfer complex of polyimide: A study on solution behavior;Ke;J. Appl. Polym. Sci.,2012
4. Low dielectric constant and moisture-resistant polyimide aerogels containing trifluo-romethyl pendent groups;Wu;Appl. Surf. Sci.,2018
5. Osés, J., Fuentes, G.G., Palacio, J.F., Esparza, J., García, J.A., and Rodríguez, R. (2018). Antibacterial Functionalization of PVD Coatings on Ceramics. Coatings, 8.