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Ultra‐Efficient and High‐Quality White Light‐Emitting Devices using Fluorescent Proteins in Aqueous Medium
Author(s) -
Sadeghi Sadra,
Melikov Rustamzhon,
Conkar Deniz,
FiratKaralar Elif Nur,
Nizamoglu Sedat
Publication year - 2020
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.202000061
Subject(s) - fluorescence , quantum yield , color rendering index , luminous efficacy , light emitting diode , phosphor , green fluorescent protein , quantum dot , optoelectronics , aqueous solution , materials science , high color , nanotechnology , chemistry , optics , computer science , biochemistry , physics , layer (electronics) , artificial intelligence , color image , image processing , image (mathematics) , gene
The transformation of electronics toward “green” and efficient devices is critical for the environmental sustainability and energy future. So far, majority of efficient lighting devices have been realized by artificial optical materials such as rare‐earth‐elements‐doped phosphors, colloidal quantum dots (QDs) and dyes. In this study, red‐emitting mScarlet and green‐emitting eGFP fluorescent proteins are determined for high‐performance white LEDs, expressed in living Escherichia coli and the purified proteins are integrated in their natural aqueous environment onto blue LED chips. The aqueous integration preserved quantum yield levels of the proteins above 70% in the device architecture and facilitated a high luminous efficiency (LE) of 81 lm W −1 with a color rendering index (CRI) of 83, which is the most efficient eco‐friendly white LED reported to date. Moreover, the concentration ratio are also optimized of red‐ and green‐emitting proteins and white protein‐based LEDs with a maximum CRI of 92 are demonstrated. This study shows that fluorescent proteins hold great promise for the next generation eco‐friendly, efficient and high‐quality white light sources.