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Optically switchable organic light-emitting transistors

Hou, L; Zhang, X; Cotella, GF; Carnicella, G; Herder, M; Schmidt, BM; Pätzel, M; ... Samorì, P; + view all (2019) Optically switchable organic light-emitting transistors. Nature Nanotechnology , 14 pp. 347-353. 10.1038/s41565-019-0370-9. Green open access

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Abstract

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.

Type: Article
Title: Optically switchable organic light-emitting transistors
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41565-019-0370-9
Publisher version: https://doi.org/10.1038/s41565-019-0370-9
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Electronic devices, Electronic properties and materials, Molecular self-assembly, Organic LEDs, Polymers
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10069338
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