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Materials 2016, 9(3), 121; doi:10.3390/ma9030121

Selective Photophysical Modification on Light-Emitting Polymer Films for Micro- and Nano-Patterning

Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
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Author to whom correspondence should be addressed.
Academic Editor: Jang-Kun Song
Received: 22 December 2015 / Revised: 26 January 2016 / Accepted: 6 February 2016 / Published: 23 February 2016
(This article belongs to the Special Issue Materials for Display Applications)
View Full-Text   |   Download PDF [2636 KB, uploaded 23 February 2016]   |  

Abstract

Laser-induced cross-linking in polymeric semiconductors was utilized to achieve micro- and nano-structuring in thin films. Single- and two-photon cross-linking processes led to the reduction in both the refractive index and thickness of the polymer films. The resultant photonic structures combine the features of both relief- and phase-gratings. Selective cross-linking in polymer blend films based on different optical response of different molecular phases enabled “solidification” of the phase-separation scheme, providing a stable template for further photonic structuring. Dielectric and metallic structures are demonstrated for the fabrication methods using cross-linking in polymer films. Selective cross-linking enables direct patterning into polymer films without introducing additional fabrication procedures or additional materials. The diffraction processes of the emission of the patterned polymeric semiconductors may provide enhanced output coupling for light-emitting diodes or distributed feedback for lasers. View Full-Text
Keywords: light-emitting polymers; selective cross-linking; metalization of phase-separation scheme; plasmonic microstructures light-emitting polymers; selective cross-linking; metalization of phase-separation scheme; plasmonic microstructures
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, X.; Liu, F.; Li, H. Selective Photophysical Modification on Light-Emitting Polymer Films for Micro- and Nano-Patterning. Materials 2016, 9, 121.

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