Silk spins out biologically based light-emitting OLETs

Biodegradable silk proteins have been demonstrated to function as edible optical components including diffraction gratings and lenses, as well as silk-based biosensors. Now, researchers at Consiglio Nazionale delle Ricerche (CNR; Bologna, Italy) and Tufts University (Medford, MA) have successfully integrated silk proteins into organic light-emitting transistors (OLETs) in a broader effort to move toward “eco-sustainable” practices in optoelectronics manufacturing.

To fabricate the OLETs, the team initially fabricated n- and p-type silk organic field-effect transistors (OFETs) by spincoating a water-insoluble, 400-nm-thick film of silk fibroin onto an optically transparent glass/indium tin oxide (ITO) substrate. Organic semiconductor layers and top metal contacts completed the OFET devices, which exhibited lower voltage thresholds and nearly no electrical hysteresis when compared to polymethylmethacrylate (PMMA)-based OFETs. Finally, the best p-type OFET was used to construct a unipolar OLET device. With a forward voltage of 90 V, the light-emission intensity was recorded at 100 nW, demonstrating the first observation of electroluminescence emission from an OLET device using silk as the gate dielectric material. Contact Roberto Zamboni at zamboni@isof.cnr.it.

Most Popular Articles

Magazine


Click here to have your products listed in the Laser Focus World Buyers Guide.

RELATED PRODUCTS

Phantom ir300

The Phantom ir300 provides extended spectral response beyond visible light spectrum up ...

Miro Airborne

Miro Airborne is a high-speed camera designed for airborne applications.

Phantom Miro Family

The Phantom Miro family are small, lightweight digital high-speed cameras.

RELATED COMPANIES

Photonics Bretagne

Offers a cluster composed of research centers, schools and companies all in the field o...

Raw Communications

Provider of marketing services in the fiber optic data communications industry includin...

XiO Photonics B V

Offers strong competence in integrated optical products for visible light applications....

Social Activity

  •  
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS