Single organic molecular systems for white light emission and their classification with associated emission mechanism

Abstract

A B S T R A C T Organic materials emitting white light have drawn great importance because of their real-world application in displays technologies and light emission. Recent studies show that single-molecule organic emitters perform better to replace multicomponent (red, green, and blue) emitters in device fabrication. Nonetheless, the practical implication of single organic-white light emission (O-WLE) while maintaining high performance balance is limited yet. The collective idea for developing WLE from a single organic molecule has not been comprehensively addressed yet, which indeed is crucial for developing new novel organic molecules for WLE. In this article, different strategies to obtain multiple/broad emission, which indeed is required to achieve WLE from a single organic molecule, are elaborated and precisely explained. These systems have been categorized based on their excited state decay mechanism, i.e., singlet emitters, both singlet and triplet emitters, and triplet emitters, which provide a clear understanding to design single O-WLE systems.(c) 2022 Elsevier Ltd. All rights reserved.