Biological fabrication of nanostructured silicon-germanium photonic crystals possessing unique photoluminescent and electroluminescent properties

Gregory L. Rorrer; Clayton Jeffryes; Chih-hung Chang; Doo-Hyoung Lee; Timothy Gutu; Jun Jiao; Raj Solanki

doi:10.1117/12.735365

11 September 2007 Biological fabrication of nanostructured silicon-germanium photonic crystals possessing unique photoluminescent and electroluminescent properties

Gregory L. Rorrer, Clayton Jeffryes, Chih-hung Chang, Doo-Hyoung Lee, Timothy Gutu, Jun Jiao, Raj Solanki

Author Affiliations +

Proceedings Volume 6645, Nanoengineering: Fabrication, Properties, Optics, and Devices IV; 66450A (2007) https://doi.org/10.1117/12.735365
Event: NanoScience + Engineering, 2007, San Diego, California, United States

Abstract

Diatoms are single-celled algae which possess silica shells called "frustules" that contain periodic submicron scale features. A diatom cell culture process was used to fabricate a two-dimensional photonic crystal slab of Ge-doped biosilica that possessed 120 nm holes, 330 nm lattice constant, and dielectric constant of 8.5. This material was integrated into an electroluminescent (EL) device by spin coating of the frustules onto indium tin oxide, followed by atomic layer deposition of 400 nm hafnium silicate. No photonic band gap was predicted. However, the EL spectrum possessed resonant UV line emissions that were consistent with photonic band calculations. An EL band gap between 500-640 nm was also observed between blue and red EL line emissions. These EL characteristics have not been observed previously, and are unique to the diatom photonic crystal. This study represents a first step towards the realization of optoelectronic devices which utilize nanoscale components fabricated through cell culture.

Citation Download Citation

Gregory L. Rorrer, Clayton Jeffryes, Chih-hung Chang, Doo-Hyoung Lee, Timothy Gutu, Jun Jiao, and Raj Solanki "Biological fabrication of nanostructured silicon-germanium photonic crystals possessing unique photoluminescent and electroluminescent properties", Proc. SPIE 6645, Nanoengineering: Fabrication, Properties, Optics, and Devices IV, 66450A (11 September 2007); https://doi.org/10.1117/12.735365

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