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Photonic polymer replicas from distributed Bragg reflectors structured porous silicon
Jihoon Kim1, Youngdae Koh, Seunghyun Jang
1Department of Chemistry, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Korea.
Journal of Nanoscience and Nanotechnology
|December 1, 2007
Summary
Flexible photonic polymer replicas with a 1D structure were created using DBR porous silicon. These polymer replicas exhibit sharp resonance and stability, showcasing a negative structure of the original DBR porous silicon.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- 1-Dimensional (1-D) photonic crystals offer unique optical properties.
- Creating flexible and stable polymer replicas of these structures is challenging.
Purpose of the Study:
- To develop a method for fabricating well-defined 1-D photonic crystals using polymer replicas.
- To characterize the optical properties and stability of the resulting polymer photonic crystals.
Main Methods:
- Fabrication of DBR porous silicon via electrochemical etching.
- Thermal oxidation of DBR porous silicon.
- Preparation of DBR PSi/polystyrene composite films.
- Removal of the DBR PSi matrix to obtain polymer replicas.
Main Results:
- Successfully obtained flexible 1-D photonic polymer replicas.
- Polymer replicas exhibited sharp resonance in reflectivity spectra.
- Optical analysis confirmed a negative structure replica of DBR porous silicon.
- Replicas demonstrated stability in aqueous solutions for several days.
Conclusions:
- The developed method enables the creation of high-quality 1-D photonic polymer replicas.
- These polymer replicas possess desirable optical characteristics and structural integrity.
- The findings open possibilities for applications requiring flexible photonic materials.
