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Published on: June 30, 2018
Antireflective structures via spin casting of polymer latex
Hao Jiang1, Ke Yu, Yuechuan Wang
1State Key Lab for Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China.
Optics Letters
|March 30, 2007
Summary
Researchers created effective antireflective coatings using nanoporous polymer films. Spin casting polymer latex achieved high optical transmittance, showing promise for mass production of advanced optical materials.
Area of Science:
- Materials Science
- Optics
- Nanotechnology
Background:
- Nanosized pores significantly lower the refractive index of thin films.
- Antireflective structures can be created by assembling nanoparticles into nanoporous layers.
Purpose of the Study:
- To report the first preparation of antireflective coatings on glass slides using spin casting of polymer latex.
- To investigate the effect of fabrication parameters on the properties of these coatings.
Main Methods:
- Spin casting of polymer latex (polymethyl methacrylate - PMMA) onto glass slides.
- Characterization of optical transmittance at 550 nm.
- Structural analysis using atomic force microscopy (AFM) and scanning electron microscopy (SEM).
Main Results:
- Achieved 95.7% optical transmittance for single-sided coatings and 99.5% for double-sided coatings.
- Revealed highly porous structures influenced by spin speed, latex concentration, and particle size.
- Demonstrated the feasibility of creating effective antireflective coatings via this method.
Conclusions:
- Spin casting polymer latex is an effective method for fabricating nanoporous antireflective coatings.
- The process parameters (spin speed, concentration, particle size) critically influence coating properties.
- This technique offers a convenient, low-cost, and reproducible approach suitable for mass production.
