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Title: Understanding the structure and energy transfer process of undoped ultrathin emitting nanolayers within interface exciplexes
Authors: Xu, Ting
Fu, Jianhui
Wang, Xinzhong
Lu, Guanhua
Liu, Baiquan
Keywords: Science::Physics
Issue Date: 2022
Source: Xu, T., Fu, J., Wang, X., Lu, G. & Liu, B. (2022). Understanding the structure and energy transfer process of undoped ultrathin emitting nanolayers within interface exciplexes. Frontiers in Chemistry, 10, 887900-.
Journal: Frontiers in Chemistry 
Abstract: Organic light-emitting diodes (OLEDs) have great potential for display, lighting, and near-infrared (NIR) applications due to their outstanding advantages such as high efficiency, low power consumption, and flexibility. Recently, it has been found that the ultrathin emitting nanolayer technology plays a key role in OLEDs with simplified structures through the undoped fabricated process, and exciplex-forming hosts can enhance the efficiency and stability of OLEDs. However, the elementary structure and mechanism of the energy transfer process of ultrathin emitting nanolayers within interface exciplexes are still unclear. Therefore, it is imminently needed to explore the origin of ultrathin emitting nanolayers and their energy process within exciplexes. Herein, the mechanism of films growing to set ultrathin emitting nanolayers (<1 nm) and their energy transfer process within interface exciplexes are reviewed and researched. The UEML phosphorescence dye plays a key role in determining the lifetime of excitons between exciplex and non-exciplex interfaces. The exciplex between TCTA and Bphen has longer lifetime decay than the non-exciplex between TCTA and TAPC, facilitating exciton harvesting. The findings will be beneficial not only to the further development of OLEDs but also to other related organic optoelectronic technologies.
ISSN: 2296-2646
DOI: 10.3389/fchem.2022.887900
Schools: School of Physical and Mathematical Sciences 
Rights: © 2022 Xu, Fu, Wang, Lu and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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