Fluorescent carbon dots from birch leaves for sustainable electroluminescent devicesVisa övriga samt affilieringar
2023 (Engelska)Ingår i: Green Chemistry, ISSN 1463-9262, E-ISSN 1463-9270, Vol. 25, nr 23, s. 9884-9895Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
The shift from depleting petroleum compounds to regenerating biomass as the raw material for organic semiconductors is a prerequisite if organic electronics is to become truly sustainable. Here, we report on a one-pot solvothermal synthesis of a biomass-based carbon dot (bio-CD) fluorescent semiconductor, using birch leaves as the sole raw material. These bio-CDs are highly soluble in ethanol (45 g L-1), and deliver deep-red and narrowband emission (peak wavelength = 675 nm, full width at half maximum, FWHM = 28 nm) at a high photoluminescence quantum yield of 26% in ethanol solution. Systematic structural characterization shows that molecular pheophytin a is the single fluorophore, and that this fluorophore is localized in the bulk of the bio-CD away from its polar surface. The functionality of the birch-leaf-derived bio-CDs in sustainable organic electronics is demonstrated by its employment as the printable emitter in a light-emitting electrochemical cell, which delivers narrowband deep-red luminance of 110 cd m-2, with a FWHM of 29 nm, at an external quantum efficiency of 0.29%. This study thus reveals a promising avenue for the functional benign synthesis and the practical solution-based implementation of narrowband bio-CDs in sustainable optoelectronic technologies.
Ort, förlag, år, upplaga, sidor
Royal Society of Chemistry, 2023. Vol. 25, nr 23, s. 9884-9895
Nationell ämneskategori
Den kondenserade materiens fysik
Identifikatorer
URN: urn:nbn:se:umu:diva-216894DOI: 10.1039/d3gc03827kISI: 001098366900001Scopus ID: 2-s2.0-85176252233OAI: oai:DiVA.org:umu-216894DiVA, id: diva2:1818370
Forskningsfinansiär
Kempestiftelserna, SMK-21-0015Kempestiftelserna, SMK-1956Energimyndigheten, 45419-1Energimyndigheten, 46523-1Energimyndigheten, 50779-1Energimyndigheten, P2021-00032Vetenskapsrådet, 2018-03937Vetenskapsrådet, 2019-02345Vetenskapsrådet, 2020-04437Vetenskapsrådet, 2021-04778Bertil & Britt Svenssons Stiftelse för BelysningsteknikKnut och Alice Wallenbergs Stiftelse, WISE-AP01-D02Knut och Alice Wallenbergs Stiftelse, KAW 2022.0381Vinnova, 2022-01319Wallenbergstiftelserna, WISE-AP01-D022023-12-112023-12-112023-12-15Bibliografiskt granskad