Engineering Excited States of Pt-Based Deep-Blue Phosphors to Enhance OLED Stability.

ABSTRACT: Platinum-based phosphorescent emitters have emerged as promising candidates for deep-blue OLEDs due to their high luminescence efficiency and narrow emission spectra. However, the insufficient chemical stability of blue phosphorescent emitters remains the primary obstacle to their commercial application. In this work, we present a systematic approach to enhance the stability of deep-blue emitters while preserving their optoelectronic properties. Using density functional theory calculations, we demonstrate that exciton-induced degradation via T₁→³MC transition is the primary operational degradation pathway for N-heterocyclic carbene-based tetradentate Pt-(II) complexes. To suppress this pathway, we developed two complementary strategies that destabilize the

SUBMITTER: Kim Y 

PROVIDER: S-EPMC12658782 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature