Nano-light-emitting　diodes　(LEDs)　are　ideal　for　ultra-high　resolution　displays　due　to　their　small　size　and　high　pixel　density.　However,　traditional　photolithography　techniques　fall　short　in　meeting　the　requirements　for　nanoscale　LED　fabrication.　Besides,　as　the　size　decreases　and　the　specific　surface　area　increases,　non-radiative　recombination　generated　by　sidewalls　defects　becomes　a　significant　issue,　affecting　the　efficiency　of　nano-LEDs.　To　address　this　challenge,　a　nano-LED　array　with　a　single　nanorod　size　of　800　nm　was　fabricated　in　this　work　by　using　nanosphere　lithography　and　etching　technology.　Meanwhile,　localized　surface　plasmons　(LSPs)　coupling　technology　was　employed　to　enhance　the　PL　efficiency　of　these　nano-LEDs.　By　comparing　with　bare　nano-LEDs,　the　PL　intensity　was　boosted　by　about　43%　and　129%　when　Ag　and　Ag@SiO2　nanoparticles　were　added　separately.　The　existence　of　LSPs　coupling　process　has　been　further　confirmed　through　time-resolved　photoluminescence　measurement　and　finite　element　simulation　analysis　of　different　samples.　The　results　provide　compelling　evidence　for　the　LSPs　coupling　technology　in　enhancing　the　efficiency　of　nanoscale　LEDs.　©　2024　IOP　Publishing　Ltd.　All　rights,　including　for　text　and　data　mining,　AI　training,　and　similar　technologies,　are　reserved.