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Efficient gate-tunable light-emitting device made of defective boron nitride nanotubes: from ultraviolet to the visible

AutorAttaccalite, Claudio; Wirtz, Ludger; Marini, Andrea; Rubio, Angel
Fecha de publicación2013
EditorNature Publishing Group
CitaciónScientific Reports 3: 2698 (2013)
ResumenBoron nitride is a promising material for nanotechnology applications due to its two-dimensional graphene-like, insulating, and highly-resistant structure. Recently it has received a lot of attention as a substrate to grow and isolate graphene as well as for its intrinsic UV lasing response. Similar to carbon, one-dimensional boron nitride nanotubes (BNNTs) have been theoretically predicted and later synthesised. Here we use first principles simulations to unambiguously demonstrate that i) BN nanotubes inherit the highly efficient UV luminescence of hexagonal BN; ii) the application of an external perpendicular field closes the electronic gap keeping the UV lasing with lower yield; iii) defects in BNNTS are responsible for tunable light emission from the UV to the visible controlled by a transverse electric field (TEF). Our present findings pave the road towards optoelectronic applications of BN-nanotube-based devices that are simple to implement because they do not require any special doping or complex growth.
DescripciónThis work is licensed under a Creative Commons Attribution 3.0 Unported license.
Versión del editorhttp://dx.doi.org/10.1038/srep02698
URIhttp://hdl.handle.net/10261/94973
DOI10.1038/srep02698
Identificadoresdoi: 10.1038/srep02698
issn: 2045-2322
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