Micropatterned Down-Converting Coating for White Bio-Hybrid Light-Emitting Diodes

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autor(en): Niklaus L, Tansaz S, Dakhil H, Weber K, Pröschel M, Lang M, Kostrzewa M, Coto PB, Detsch R, Sonnewald U, Wierschem A, Boccaccini AR, Costa RD
Zeitschrift: Advanced Functional Materials
Jahr der Veröffentlichung: 2017
Band: 27
ISSN: 1616-301X
eISSN: 1616-3018


White hybrid light-emitting diodes (WHLEDs) are considered as a solid approach toward environmentally sustainable lighting sources that meet the "Green Photonics" requirements. Here, WHLEDs with protein-based down-converting coatings, i.e., Bio-WHLEDs, are demonstrated and exhibit worthy white color quality, luminous efficiency, and stability values. The coatings feature a multilayered cascade-like architecture with thicknesses of 1-3 mm. This limits the efficiency due to the low optical transmittance. Thus, submillimeter coatings, where the location of the proteins is well-defined, are highly desired. It is in this context where the thrust of this work sets in. Here, a straightforward way to design microstructured single-layer coatings, in which the proteins are placed at our command by using 3D printing, is presented. Based on comprehensive spectroscopic and rheological investigations, the optimization of the matrix and the plotting to prepare different micropatterns, i.e., lines, open-grids, and closed-grids, is rationalized. The latter are applied to prepare Bio-WHLEDs with approximate to 5-fold enhancement of the luminous efficiency compared to the reference devices with a cascade-like coating, without losing stability and color quality. As such, this work shows a new route to exploit proteins for optoelectronics, setting a new avenue of research into the emerging field of Bio-WHLEDs.

FAU-Autoren / FAU-Herausgeber

Boccaccini, Aldo R. Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Dakhil, Haider
Professur für Hochdruckthermofluiddynamik und Rheologie
Detsch, Rainer Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Kostrzewa, Monika Maria
Lehrstuhl für Strömungsmechanik
Lang, Martina
Lehrstuhl für Biochemie
Niklaus, Lukas
Lehrstuhl für Biochemie
Pröschel, Marlene
Lehrstuhl für Biochemie
Sonnewald, Uwe Prof. Dr.
Lehrstuhl für Biochemie
Tansaz, Samira Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Weber, Katharina
Lehrstuhl für Biochemie
Wierschem, Andreas Prof. Dr.
Professur für Hochdruckthermofluiddynamik und Rheologie


Niklaus, L., Tansaz, S., Dakhil, H., Weber, K., Pröschel, M., Lang, M.,... Costa, R.D. (2017). Micropatterned Down-Converting Coating for White Bio-Hybrid Light-Emitting Diodes. Advanced Functional Materials, 27. https://dx.doi.org/10.1002/adfm.201601792

Niklaus, Lukas, et al. "Micropatterned Down-Converting Coating for White Bio-Hybrid Light-Emitting Diodes." Advanced Functional Materials 27 (2017).


Zuletzt aktualisiert 2018-08-08 um 14:53