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However, the structure\u2010photophysics correlation and the applications of such complexes for organic light\u2010emitting diodes (OLEDs) remain largely unexplored. Herein, we report a series of Pd(II) complexes (\n                    <jats:bold>Pd3<\/jats:bold>\n                    \u2013\n                    <jats:bold>Pd6<\/jats:bold>\n                    ) having dibenzo[\n                    <jats:italic>a<\/jats:italic>\n                    ,\n                    <jats:italic>c<\/jats:italic>\n                    ]phenazine (DBPZ)\u2010substituted carbazolyl ligands with varied torsion angles. The energy gap between the lowest singlet and triplet excited states is tuned from 0.05\u00a0eV to 0.26\u00a0eV, which governs the emission mechanism and radiative decay rate. Complex\n                    <jats:bold>Pd3<\/jats:bold>\n                    exhibits strong red TADF with a photoluminescence quantum yield of 82% and a lifetime of 1.13 \u00b5s. In bottom\u2010emitting OLEDs,\n                    <jats:bold>Pd3<\/jats:bold>\n                    affords red electroluminescence with a peak at 617\u00a0nm, a maximum external quantum efficiency (EQE\n                    <jats:sub>max<\/jats:sub>\n                    ) of 30.15%, and a small efficiency roll\u2010off of 2.32% at 1000\u00a0cd m\n                    <jats:sup>\u22122<\/jats:sup>\n                    . In top\u2010emitting ITO\u2010free OLEDs,\n                    <jats:bold>Pd3<\/jats:bold>\n                    shows pure\u2010red emission with CIE\n                    <jats:sub>x<\/jats:sub>\n                    &gt; 0.68 and an EQE\n                    <jats:sub>max<\/jats:sub>\n                    of 38.68%.\n                    <jats:bold>Pd3<\/jats:bold>\n                    is also demonstrated as an efficient sensitizer for a red\u2010emitting multi\u2010resonance emitter, enabling hyperfluorescence OLEDs with an EQE\n                    <jats:sub>max<\/jats:sub>\n                    of 27.06% and suppressed efficiency roll\u2010off. These results highlight the potential of MPICT\u2010type Pd(II) complexes for high\u2010performance OLED displays.\n                  <\/jats:p>","DOI":"10.1002\/adma.74823","type":"journal-article","created":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T04:22:19Z","timestamp":1787977339000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Pd(II)\u2010TADF Complexes With Metal\u2010Perturbed Intraligand Charge Transfer State: Emitters and Sensitizers for High\u2010Efficiency Red OLEDs"],"prefix":"10.1002","volume":"38","author":[{"given":"Li","family":"Jiang","sequence":"first","affiliation":[{"name":"Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and Engineering Shenzhen University  Shenzhen P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyang","family":"Xia","sequence":"additional","affiliation":[{"name":"China\u2013Belarus Belt and Road Joint Laboratory on Advanced Materials and Manufacturing Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Changchun P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and Engineering Shenzhen University  Shenzhen P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sijie","family":"Xian","sequence":"additional","affiliation":[{"name":"Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and Engineering Shenzhen University  Shenzhen P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2751-5974","authenticated-orcid":false,"given":"Liang","family":"Zhou","sequence":"additional","affiliation":[{"name":"China\u2013Belarus Belt and Road Joint Laboratory on Advanced Materials and Manufacturing Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Changchun P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9337-3460","authenticated-orcid":false,"given":"Chuluo","family":"Yang","sequence":"additional","affiliation":[{"name":"Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and Engineering Shenzhen University  Shenzhen P. R. 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