Computational aspects to design iridium complexes as emitters for OLEDs

Abstract

Depiction of red, green and blue emitters along with energy level diagram.

Incorporation of a Fluorine Atom in a Bridging Ligand of Half-Lantern PtII2 Complexes Provides up to 10-Fold Enhancement of Electroluminescence Brightness

“…Inspection of the data from Table indicates that for all complexes, IP v and IP a are low and EA v and EA a are high, which are advantageous to the generation of hole and denotes a stronger charge injection ability respectively . These values and λ h and λ e values are almost the same for Pt1 - 5 ; small Δλ values indicate a good charge transfer balance for the emission layer . Introduction of a halogen atom in 6th position of bridging ligand has no noticeable effect on the electronic properties of the complexes and is hardly responsible for the improvement of the charge mobility.…”

“…72 These values and λ h and λ e values are almost the same for Pt1-5; small Δλ values indicate a good charge transfer balance for the emission layer. 73 Introduction of a halogen atom in 6th position of bridging ligand has no noticeable effect on the electronic properties of the complexes and is hardly responsible for the improvement of the charge mobility.…”

Efficient orange and red thermally activated delayed fluorescence materials based on 1,8-naphthalimide derivatives

“…Noble metal phosphorescent emitters, such as iridium and platinum complexes, can induce spin-orbit coupling (SOC) to obtain phosphorescence emission and utilize both singlet and triplet excitons. [10][11][12] However, their high price limits their widespread use. Therefore, the synthesis of pure organic light-emitting materials capable of utilizing both the singlet and triplet states is of great importance.…”