Triazole-type　ligand　has　been　approved　to　be　an　excellent　building　block　to　construct　efficient　cationic　Ir(III)　dyes.　Herein,　a　new　family　of　Ir(III)　complexes　employing　two　different　triazole　fragments　as　cyclometalated　and　ancillary　ligands,　respectively,　has　been　synthesized　and　their　photophysical　and　electrochemical　properties　are　investigated　in　detail.　Through　careful　modification　of　the　used　ligands,　efficiently　tuning　emission　color　from　deep-blue　(459　nm)　to　red　(649　nm)　is　realized　and　the　intrinsic　structure-property　relationship　is　also　studied　by　the　comprehensive　theoretical　calculations.　Choosing　a　greenish　blue　emitting　dye　3　that　shows　relatively　high　photoluminescence　yield　in　neat　film,　the　solution-processed　single-layer　device　with　peak　current　efficiency　of　2.19　cd　A(-1)　and　power　efficiency　of　0.97　lm　W-1,　respectively,　has　been　achieved.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.