Light-emitting　electrochemical　cells　(LECs)　are　one　of　the　most　promising　technologies　for　solid-sate　lighting　and　display.　We　present　a　hybrid　device　concept　for　achieving　higher　performance　by　combining　red　colloidal　quantum　dots　(QDs)　and　Ir-based　ionic　transition　metal　complex　(iTMC).　The　utilized　QDs　exhibit　a　core-shell　structure　of　CdSe/ZnS.　By　this　method,　the　resultant　devices　exhibit　a　maximum　luminance　of　14　383　cd/m2　and　current　efficiency　(CE)　of　2.00　cd/A,　almost　fourfold　higher　than　those　(3475　cd/m2　and　0.55　cd/A)　of　the　control　device.　In　conclusion,　QDs　exert　a　regulatory　effect　on　charge　carrier　transport　in　hybrid　devices,　gradually　aligning　the　electron　and　hole　injection　of　the　device,　thus　enhancing　its　performance.　Red　QD　(RQD)　not　only　has　an　electron　injection　buffering　effect　but　also　plays　a　certain　role　in　hole　blocking.　©　1963-2012　IEEE.