Advances in Host-Free White Organic Light-Emitting Diodes Utilizing Thermally Activated Delayed Fluorescence: A Comprehensive Review

Wenxin Zhang; Yaxin Li; Gang Zhang; Xiaotian Yang; Xi Chang; Guoliang Xing; He Dong; Jin Wang; Dandan Wang; Zhihong Mai; Xin Jiang

doi:10.3390/mi15060703

Micromachines (May 2024)

Advances in Host-Free White Organic Light-Emitting Diodes Utilizing Thermally Activated Delayed Fluorescence: A Comprehensive Review

Wenxin Zhang,
Yaxin Li,
Gang Zhang,
Xiaotian Yang,
Xi Chang,
Guoliang Xing,
He Dong,
Jin Wang,
Dandan Wang,
Zhihong Mai,
Xin Jiang

Affiliations

Wenxin Zhang: College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China
Yaxin Li: College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China
Gang Zhang: College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China
Xiaotian Yang: Key Laboratory of Preparation and Applications of Environmental Friendly Material of the Ministry of Education, College of Chemistry, Jilin Normal University, Changchun 130103, China
Xi Chang: College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China
Guoliang Xing: Jilin Special Equipment Inspection Center, Jilin Special Equipment Accident Investigation Service Center, No. 866 Huadan Street, Longtan District, Jilin 132013, China
He Dong: College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China
Jin Wang: College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China
Dandan Wang: Hubei Jiufengshan Laboratory, Wuhan 430206, China
Zhihong Mai: Hubei Jiufengshan Laboratory, Wuhan 430206, China
Xin Jiang: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China

DOI: https://doi.org/10.3390/mi15060703
Journal volume & issue: Vol. 15, no. 6
p. 703

Abstract

Read online

The ever-growing prominence and widespread acceptance of organic light-emitting diodes (OLEDs), particularly those employing thermally activated delayed fluorescence (TADF), have firmly established them as formidable contenders in the field of lighting technology. TADF enables achieving a 100% utilization rate and efficient luminescence through reverse intersystem crossing (RISC). However, the effectiveness of TADF-OLEDs is influenced by their high current density and limited device lifetime, which result in a significant reduction in efficiency. This comprehensive review introduces the TADF mechanism and provides a detailed overview of recent advancements in the development of host-free white OLEDs (WOLEDs) utilizing TADF. This review specifically scrutinizes advancements from three distinct perspectives: TADF fluorescence, TADF phosphorescence and all-TADF materials in host-free WOLEDs. By presenting the latest research findings, this review contributes to the understanding of the current state of host-free WOLEDs, employing TADF and underscoring promising avenues for future investigations. It aims to serve as a valuable resource for newcomers seeking an entry point into the field as well as for established members of the WOLEDs community, offering them insightful perspectives on imminent advancements.

Published in Micromachines

ISSN: 2072-666X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mechanical engineering and machinery
Website: https://www.mdpi.com/journal/micromachines

About the journal

Abstract

Keywords