Multi‐Scale Charge Transfer in Organic Electroluminescence
Abstract
ABSTRACT Organic light‐emitting diodes (OLEDs) have witnessed remarkable advances in both materials science and device engineering over the past three decades. Owing to their intrinsic advantages, including excellent flexibility, low driving voltage, wide viewing angles, broad color gamut, and high electroluminescent efficiency, OLEDs have successfully transitioned from laboratory to commercial applications. The key is the generation and utilization of excitons, which are bound electron–hole pairs formed within organic emitters, which play a decisive role in determining the energy efficiency of OLED‐based display and lighting technologies. In particular, triplet excitons generated through charge‐transfer processes are particularly important, as they critically influence the electroluminescent performance of state‐of‐the‐art OLED devices. In this review, charge transfer mechanisms operating in organic emitters are systematically discussed and summarized, encompassing both intermolecular and intramolecular interactions, as well as short‐ and long‐range charge‐transfer processes in organic emitters. By comparing these different interaction modes, we establish a comprehensive perspective on how charge transfer governs exciton formation and emission behavior. Furthermore, a detailed structure–property relationship is analyzed, offering mechanistic insights that are intended to guide the rational molecular design of next‐generation high‐performance materials and devices.
Article Details
Authors (17)
Qiang He
Yulong Shi
Tingting Feng
Sichao Ji
Institute of Flexible Electronics (IFE Future Technologies) Future Display Institute of Xiamen Tan Kah Kee Innovation Laboratory Xiamen University Xiamen China
Qiyin Chen
Institute of Flexible Electronics (IFE Future Technologies) Future Display Institute of Xiamen Tan Kah Kee Innovation Laboratory Xiamen University Xiamen China
Zhexin Song
Institute of Flexible Electronics (IFE Future Technologies) Future Display Institute of Xiamen Tan Kah Kee Innovation Laboratory Xiamen University Xiamen China
Xiangyu Shen
Zhejiang Key Laboratory of Excited-State Energy Conversion and Energy Storage, Department of Chemistry, Institute of Fundamental and Transdisciplinary Research
Xihu Wu
Institute of Flexible Electronics (IFE Future Technologies) Xiamen University Xiamen China
Shun Li
Institute of Quantum and Sustainable Technology (IQST), School of Chemistry and Chemical Engineering
Federico Rosei
Department of Chemical and Pharmaceutical Sciences Trieste University Trieste 34127 Italy
Jianming Zhang
Institute of Quantum and Sustainable Technology (IQST), School of Chemistry and Chemical Engineering
Chengshao Yang
Yunnan Invensight Optoelectronics Technology Co. Ltd Kunming China
Ruidong Zhu
Yunnan Invensight Optoelectronics Technology Co. Ltd Kunming China
Qingshan Shan
Yunnan Invensight Optoelectronics Technology Co. Ltd Kunming China
Qin Xue
Department of Physical Science and Technology Central China Normal University Wuhan China
Wei Huang
Guohua Xie
The Institute of Flexible Electronics (Future Technologies)