Electric-field switching of bright and dark excitons in semiconductor crossed nanowires

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Original languageEnglish
Article number16801
Journal / PublicationChinese Physics Letters
Issue number1
Publication statusPublished - Jan 2013


We investigate theoretically the exciton states in semiconductor crossed nanowires (CNWs) and it is found that the energy spectrum and electro-PL spectrum of the exciton in the CNWs can be tuned by the size of the nanowires using electric fields. An interesting bright-to-dark exciton transition can be found and it significantly affects the photoluminescence spectrum by the electric fields, which can be used to design new types of optoelectronic devices. © 2013 Chinese Physical Society and IOP Publishing Ltd.