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Accordingly, two benzo[\n                    <jats:italic>d<\/jats:italic>\n                    ]imidazolylidene pro\u2010chelates,\n                    <jats:bold>\n                      L12H\n                      <jats:sub>2<\/jats:sub>\n                      <jats:sup>+<\/jats:sup>\n                    <\/jats:bold>\n                    and\n                    <jats:bold>\n                      L13H\n                      <jats:sub>2<\/jats:sub>\n                      <jats:sup>+<\/jats:sup>\n                    <\/jats:bold>\n                    , one with two cyano groups at the\n                    <jats:italic>peri<\/jats:italic>\n                    \u2010benzo and\n                    <jats:italic>N<\/jats:italic>\n                    \u2010aryl pendent and the other with its\n                    <jats:italic>peri<\/jats:italic>\n                    \u2010cyano group being replaced with methyl substituent, were employed in syntheses of Ir(III) complexes\n                    <jats:bold>\n                      <jats:italic>f<\/jats:italic>\n                      \u2010ct12b\n                    <\/jats:bold>\n                    ,\n                    <jats:bold>c<\/jats:bold>\n                    and\n                    <jats:bold>\n                      <jats:italic>f<\/jats:italic>\n                      \u2010ct13b\n                    <\/jats:bold>\n                    ,\n                    <jats:bold>c<\/jats:bold>\n                    . Notably, complexes\n                    <jats:bold>\n                      <jats:italic>f<\/jats:italic>\n                      \u2010ct12b\n                    <\/jats:bold>\n                    ,\n                    <jats:bold>c<\/jats:bold>\n                    exhibited the traditional MLCT process, while\n                    <jats:bold>\n                      <jats:italic>f<\/jats:italic>\n                      \u2010ct13b,c\n                    <\/jats:bold>\n                    were dominated by the TSCT transition, resulting in a smaller S\n                    <jats:sub>1<\/jats:sub>\n                    \u2013T\n                    <jats:sub>1<\/jats:sub>\n                    energy gap \u0394\n                    <jats:italic>E<\/jats:italic>\n                    <jats:sub>ST<\/jats:sub>\n                    . Next, it prompted us to explore whether their long\u2010lived emission originated from phosphorescence or thermally activated delayed fluorescence (TADF). Although temperature\u2010dependent emission studies favor TADF, the unresolved concerns are still discussed in depth. For application, OLED with the TSCT\u2010based dopant\n                    <jats:bold>\n                      <jats:italic>f<\/jats:italic>\n                      \u2010ct13b\n                    <\/jats:bold>\n                    delivered a maximum external quantum efficiency (EQE) of 22.2% and a max. luminance of 10\u00a0000\u00a0cd m\n                    <jats:sup>\u20122<\/jats:sup>\n                    , together with CIE\n                    <jats:italic>\n                      <jats:sub>xy<\/jats:sub>\n                    <\/jats:italic>\n                    of (0.155, 0.120). Moreover, the hyper\u2010OLED with\n                    <jats:bold>\n                      <jats:italic>f<\/jats:italic>\n                      \u2010ct13c\n                    <\/jats:bold>\n                    sensitizer and\n                    <jats:italic>v<\/jats:italic>\n                    \u2010DABNA terminal emitter exhibited a max. EQE of 28.2% and CIE\n                    <jats:italic>\n                      <jats:sub>xy<\/jats:sub>\n                    <\/jats:italic>\n                    of (0.123, 0.129), demonstrating a new approach in developing efficient Ir(III) blue phosphors.\n                  <\/jats:p>","DOI":"10.1002\/anie.202424694","type":"journal-article","created":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T21:21:07Z","timestamp":1741728067000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Iridium(III) Carbene Complexes Featuring Either Metal\u2010to\u2010Ligand Charge Transfer (MLCT) or Through\u2010Space Charge Transfer (TSCT) Blue Luminescence"],"prefix":"10.1002","volume":"64","author":[{"given":"Jie","family":"Yan","sequence":"first","affiliation":[{"name":"Department of Chemistry, Department of Materials Science and Engineering, and Center of Super\u2010Diamond and Advanced Films (COSDAF) City University of Hong Kong  Hong Kong SAR P.R. 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