Electroluminescence from Single-Chirality Single-Wall Carbon Nanotube Films

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dc.contributor.advisorKono, Junichiroen_US
dc.creatorMojibpour, Alien_US
dc.date.accessioned2022-09-26T14:41:01Zen_US
dc.date.available2022-11-01T05:01:10Zen_US
dc.date.created2022-05en_US
dc.date.issued2022-04-22en_US
dc.date.submittedMay 2022en_US
dc.date.updated2022-09-26T14:41:01Zen_US
dc.description.abstractSingle-wall carbon nanotubes (SWCNTs) provide unique one-dimensional (1D) platforms for exploring nonintuitive many-body physics unique to 1D systems as well as for developing quantum devices for computation, sensing, and communication. There are semiconducting and metallic SWCNTs, and semiconducting SWCNTs, being direct-gapped, are promising for building revolutionary optoelectronic devices such as ultralow-threshold lasers and ultrahigh-efficiency solar cells. During the last decade, individual semiconducting SWCNTs have been extensively studied. However, optical properties of macroscopic assemblies and devices of SWCNTs have yet to be explored. In this work, we studied electroluminescence devices based on chirality-purified (6,5) SWCNT films, demonstrating intense near-infrared light emission with high efficiencies through the process of impact ionization. By eliminating residual carriers through annealing, we were able to achieve a more than 100% increase in efficiency for light emission per carrier. In addition, in films in which SWCNTs are well aligned, we made an unusual observation that the polarization of emitted photons depends on the direction of the current with respect to the SWCNT alignment direction. These results are not only fascinating but also important for developing unique macroscopically 1D optoelectronic devices based on aligned SCWNT films.en_US
dc.embargo.terms2022-11-01en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationMojibpour, Ali. "Electroluminescence from Single-Chirality Single-Wall Carbon Nanotube Films." (2022) Diss., Rice University. <a href="https://hdl.handle.net/1911/113351">https://hdl.handle.net/1911/113351</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/113351en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectCarbon Nanotubeen_US
dc.subjectElectroluminescenceen_US
dc.titleElectroluminescence from Single-Chirality Single-Wall Carbon Nanotube Filmsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentElectrical and Computer Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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