Issue 42, 2022

Recent advances of NIR-TADF (λ maxPL/EL > 700 nm) emitters and their applications in OLEDs

Abstract

The rise of organic thermally activated delayed fluorescence (TADF) materials as NIR emitters and hosts have engrossed wide consideration as they can demonstrate 100% internal quantum efficiency. These materials have exceeded the phosphorescent noble-metal complexes due to cost-efficiency without compromising the OLED performance. Numerous applications of the NIR spectrum, e.g., in telecommunication, night-vision display, biomedical applications, and chemical sensors, render the NIR-TADF emitters vulnerable to evolution. This review highlights the various strategies adopted in the recent past (2015–2022) to judiciously design purely organic NIR-TADF emitters (λmaxPL/EL > 700 nm) with in-depth discussions of photophysical and device-electroluminescence studies. Approaches such as the incorporation of extended π-conjugated acceptors, diazoles of group-16 elements, ‘BF2’-acceptor, non-conjugated donor–acceptor dendrons, exciplex formation, and TADF sensitization provide effective pathways to construct high-efficiency NIR-TADF-OLEDs. Thus, this review aims to provide a new perspective for the next generation researchers to implement strategies for the thoughtful design of efficient NIR-TADF materials.

Graphical abstract: Recent advances of NIR-TADF (λmaxPL/EL > 700 nm) emitters and their applications in OLEDs

Article information

Article type
Review Article
Submitted
07 Сер 2022
Accepted
04 Жов 2022
First published
05 Жов 2022

J. Mater. Chem. C, 2022,10, 15681-15707

Recent advances of NIR-TADF (λmaxPL/EL > 700 nm) emitters and their applications in OLEDs

S. Sharma and A. K. Pal, J. Mater. Chem. C, 2022, 10, 15681 DOI: 10.1039/D2TC03316J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements