Photoluminescent　properties　from　Au/ZnO/sapphire　and　ZnO/Au/sapphire　structures　have　been　investigated.　It　is　found　that　due　to　the　co-interaction　between　the　incident　light　and　local　surface　plasmons,　the　ultraviolet　(UV)　emissions　from　the　two　structures　were　both　enhanced　and　the　visible　emissions　related　to　the　defects　were　suppressed.　By　the　means　of　electromagnetic　simulation,　it　indicates　that　the　enhancement　of　UV　intensity　is　a　result　of　the　enhanced　electric　field　intensity　of　the　325　nm　excitation　light,　which　is　induced　by　localized　surface　plasmons　resonance　(LSPR).　On　the　other　hand,　electron　transfer　which　is　induced　by　the　local　surface　also　account　for　the　enhancement　of　UV　emissions.　The　suppression　of　the　visible　emissions　might　be　due　to　the　flowing　of　electrons　in　the　defect　states　to　the　Au,　which　caused　the　reduction　of　the　electrons　in　the　defect　states.　(C)　2014　Elsevier　B.V.　All　rights　reserved.