Year: 2019
Type: article
Abstract: The impending global energy crisis and inefficient energy utilization have driven the use of energy efficient devices for display and lighting applications.Energy-efficient organic light emitting diodes (OLEDs) are considered to be the next generation of smart displays, becoming one of the most competitive candidate for future energy-efficient lighting sources.The molecular design of high-efficiency deep blue materials are greatly limited due to their inherent wide bandgap, poor carrier charge balance and their low efficiency in the solid state.As a novel building block for blue-emitting materials, phenanthroimidazole (PI) group is attractive stems from their bipolar feature and excellent fluorescence efficiency, which has aroused strong interest of researchers.Molecular design and photophysical properties of phenanthroimidazole-based deep blue-emitting materials are of great significance.In this review, an overview of the recent studies on PI-based blue emitters for applications in organic light-emitting diodes (OLEDs) is presented.The luminescence mechanism, design and latest developments of the electroluminescent devices fabricated from phenanthroimidazole derivatives are described, and their prospects in the future of full-color display and solid-state lighting are forecasted.
Authors: Zhipeng Qiu, Jihua Tan, Ning Cai, Kai Wang, Shaomin Ji, Yanping Huo
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2935457000