title: Large Area 2D and 3D Colloidal Photonic Crystals Fabricated by a Roll-to-Roll Langmuir-Blodgett Method.
abstract: We present our results on the fabrication of large area colloidal photonic crystals on flexible poly(ethylene terephthalate) (PET) film using a roll-to-roll Langmuir-Blodgett technique. Two-dimensional (2D) and three-dimensional (3D) colloidal photonic crystals from silica nanospheres (250 and 550 nm diameter) with a total area of up to 340 cm(2) have been fabricated in a continuous manner compatible with high volume manufacturing. In addition, the antireflective properties and structural integrity of the films have been enhanced via the use of a second roll-to-roll process, employing a slot-die coating of an optical adhesive over the photonic crystal films. Scanning electron microscopy images, atomic force microscopy images, and UV-vis optical transmission and reflection spectra of the fabricated photonic crystals are analyzed. This analysis confirms the high quality of the 2D and 3D photonic crystals fabricated by the roll-to-roll LB technique. Potential device applications of the large area 2D and 3D colloidal photonic crystals on flexible PET film are briefly reviewed.
authors.affiliation: Tyndall National Institute, UCC, Lee Maltings, Dyke Parade, Cork, Ireland.
authors.forename: Mikhail
authors.initials: M
authors.lastname: Parchine
authors.affiliation: Tyndall National Institute, UCC, Lee Maltings, Dyke Parade, Cork, Ireland.
authors.forename: Joe
authors.initials: J
authors.lastname: McGrath
authors.affiliation: Tyndall National Institute, UCC, Lee Maltings, Dyke Parade, Cork, Ireland.|Institute of Electronics and Photonics, Faculty of Electrical Engineering and Information Technology, Slovak Technical University , Bratislava, Slovakia.
authors.forename: Maria
authors.initials: M
authors.lastname: Bardosova
authors.affiliation: Tyndall National Institute, UCC, Lee Maltings, Dyke Parade, Cork, Ireland.|Department of Chemistry, University College Cork , Cork, Ireland.
authors.forename: Martyn E
authors.initials: ME
authors.lastname: Pemble