Optically switchable organic light-emitting transistors
Journal article, 2019
Organic light-emitting transistors are pivotal components for emerging opto- and nanoelectronics applications, such as logic circuitries and smart displays. Within this technology sector, the integration of multiple functionalities in a single electronic device remains the key challenge. Here we show optically switchable organic light-emitting transistors fabricated through a judicious combination of light-emitting semiconductors and photochromic molecules. Irradiation of the solution-processed films at selected wavelengths enables the efficient and reversible tuning of charge transport and electroluminescence simultaneously, with a high degree of modulation (on/off ratios up to 500) in the three primary colours. Different emitting patterns can be written and erased through a non-invasive and mask-free process, on a length scale of a few micrometres in a single device, thereby rendering this technology potentially promising for optically gated highly integrated full-colour displays and active optical memory.
Organic field effect transistors
Light-emitting transistors
Display devices
Light
Phototransistors
Computer circuits
Author
Lili Hou
University of Strasbourg
Xiaoyan Zhang
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
University of Strasbourg
Giovanni F. Cotella
University College London (UCL)
Giuseppe Carnicella
University College London (UCL)
Martin Herder
Humboldt University of Berlin
Bernd M. Schmidt
Humboldt University of Berlin
Heinrich Heine University Düsseldorf
Michael Pätzel
Humboldt University of Berlin
Stefan Hecht
Humboldt University of Berlin
F. Cacialli
University College London (UCL)
Paolo Samorì
University of Strasbourg
Nature Nanotechnology
1748-3387 (ISSN) 1748-3395 (eISSN)
Vol. 14 4 347-353Subject Categories
Atom and Molecular Physics and Optics
Other Physics Topics
Condensed Matter Physics
DOI
10.1038/s41565-019-0370-9