Silk-hydrogel Lenses for Light-emitting Diodes
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ID: 264825
2017
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Abstract
Abstract Today the high demand for electronics leads to massive production of waste, thus green materials based electronic devices are becoming more important for environmental protection and sustainability. The biomaterial based hydrogels are widely used in tissue engineering, but their uses in photonics are limited. In this study, silk fibroin protein in hydrogel form is explored as a bio-friendly alternative to conventional polymers for lens applications in light-emitting diodes. The concentration of silk fibroin protein and crosslinking agent had direct effects on optical properties of silk hydrogel. The spatial radiation intensity distribution was controlled via dome- and crater-type silk-hydrogel lenses. The hydrogel lens showed a light extraction efficiency over 0.95 on a warm white LED. The stability of silk hydrogel lens is enhanced approximately three-folds by using a biocompatible/biodegradable poly(ester-urethane) coating and more than three orders of magnitude by using an edible paraffin wax coating. Therefore, biomaterial lenses show promise for green optoelectronic applications.
| Reference Key |
melikov2017silkhydrogelscientific
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| Authors | Melikov, Rustamzhon;Press, Daniel Aaron;Kumar, Baskaran Ganesh;Dogru, Itir Bakis;Sadeghi, Sadra;Chirea, Mariana;Yılgör, İskender;Nizamoglu, Sedat; |
| Journal | Scientific reports |
| Year | 2017 |
| DOI |
10.1038/s41598-017-07817-1
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