High‐Efficiency Polymer Light‐Emitting Devices with Robust Phosphorescent Platinum(II) Emitters Containing Tetradentate Dianionic O∧N∧C∧N Ligands

• DOI: 10.1002/adma.201302408
• Publication Date: 2013-08-12T08:11:17Z
• Authors: Gang Cheng; Pui‐Keong Chow; Steven C. F. Kui; Chi‐Chung Kwok; Chi‐Ming Che
• Keywords: polymer light-emitting devices; platinum(ii) complexes; white emission; tetradentate O^N^C^N ligand; 02 engineering and technology; monochromic emission; 0210 nano-technology; 01 natural sciences; 0104 chemical sciences

[Pt(O(∧) N(∧) C(∧) N)]-type complexes are used as single emitters in solution-processed PLEDs with maximum EQEs of 15.55% for green and 12.73% for white devices, which are the highest values ever achieved for PLEDs based on Pt(ii) complexes.