Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Biogenic fluorescent protein–silk fibroin phosphors for high performing light-emitting diodes

Author affiliations

Abstract

This work presents a new family of bio-hybrid light-emitting diodes (Bio-HLEDs) using all-bio color down-converting coatings that combine silk fibroin (SF) as a packaging matrix and fluorescent proteins (FPs) as emitters. The thermal, mechanical, optical, and luminescent features of the FP–SF bio-phosphors were optimized with respect to the blend composition and the FP stability under thermal and irradiation stress. Bio-HLEDs with FP–SF filters feature stabilities of 1.2 h and 500 h (200 mA) at efficiencies of ∼40 lm W−1 for on-chip and remote configurations, respectively. This is significantly superior to devices with FP–polymer bio-phosphors – i.e., 1.8 min (on-chip) and 300 h (remote) at <35 lm W−1. The excellence of the biogenic phosphors is attributed to (i) the ideal optical features of the SF films, (ii) the highly efficient emission of the FPs, and (iii) the high thermal- and photo-stabilities of FPs in the SF matrix. Finally, we revealed that the emission deactivation process of FP–SF phosphors is related to a very slow protonation of the ionic form of the FP chromophore along with large morphological changes due to thermal- and photo-induced FP motions. Overall, this work shows the promising prospects of fully biogenic phosphors en route to designing highly stable bio-based lighting devices.

Graphical abstract: Biogenic fluorescent protein–silk fibroin phosphors for high performing light-emitting diodes

Back to tab navigation

Supplementary files

Article information


Submitted
24 Mar 2020
Accepted
07 May 2020
First published
22 May 2020

This article is Open Access

Mater. Horiz., 2020, Advance Article
Article type
Communication

Biogenic fluorescent protein–silk fibroin phosphors for high performing light-emitting diodes

V. Fernández-Luna, J. P. Fernández-Blázquez, M. A. Monclús, F. J. Rojo, R. Daza, D. Sanchez-deAlcazar, A. L. Cortajarena and R. D. Costa, Mater. Horiz., 2020, Advance Article , DOI: 10.1039/D0MH00503G

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements