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"Protein-integrated white light-emitting diodes for efficient, high-quality and biocompatible solid-state lighting" (PROTEINLED)
Start date: Mar 1, 2014, End date: Feb 28, 2017 PROJECT  FINISHED 

"Green photonics aims to provide solutions that generate or save energy, reduce pollution and greenhouse gas emissions, produce environmentally sustainable outputs or enhance public health. Solid-state lighting (SSL), one of the most important green photonics technologies, offers 50% reduction in global electricity consumption for lighting that corresponds to the production by hundreds of coal plants and decrease in millions of tons of carbon emission, if the entire conventional white light sources are to be replaced with energy-efficient light emitting diodes (LEDs). However, the widely used phosphor-based white LED technology and the currently investigated nanocrystal-based white LEDs have limitations in terms of biocompatibility, energy efficiency and color quality. To this end, we propose a new class of color-conversion LEDs integrated with proteins to overcome the disadvantages of currently used and investigated color conversion materials. For this, we will work on the theoretical modeling, design, fabrication and experimental realization of these new solid-state lighting devices. The excellent optical properties of the fluorescent proteins including strong absorption, high fluorescence quantum yields and high photostability will enable us to achieve efficient and stable white light generation. Furthermore, the biocompatible characteristics of the proteins have the potential to minimize the pollution caused by the color-conversion materials and make them a strong candidate for “green lighting”. These hybrid photonic devices will embody fluorescent and transparent silk-fibroin proteins on III-V InGaN/GaN light-emitting structures. This project aims for protein-integrated color-conversion white LEDs that are expected to simultaneously achieve high-quality, efficient and eco-friendly solid-state lighting. Therefore, this project offers a potential solution to help addressing economical and environmental challenges we are now facing due to the energy problem."

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