Recent advances in highly-efficient near infrared OLED emitters

dos Santos, Paloma L.; Stachelek, Patrycja; Takeda, Youhei et al.

Materials Chemistry Frontiers, 2024, 8, 1731-1766

Number of Access:378（2025-07-27 08:53 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98091

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Title
Recent advances in highly-efficient near infrared OLED emitters
Creator
CreatorName
dos Santos, Paloma L.
CreatorName
Stachelek, Patrycja
NRID
1000060608785 1000060608785
ORCID
0000-0001-9103-4238 0000-0001-9103-4238
researchmap permalink
read0156438 read0156438
Scopus Author ID
12753487600 12753487600
CreatorName
Takeda, Youhei
CreatorName
Pander, Piotr
Description
dos Santos P.L., Stachelek P., Takeda Y., et al. Recent advances in highly-efficient near infrared OLED emitters. Materials Chemistry Frontiers 8, 1731 (2024); https://doi.org/10.1039/D3QM01067H.
Abstract
Near infrared (NIR) light (700-1400 nm) can be used in numerous biological/medical as well as technological applications. In this work we review the most recent examples of highly efficient NIR organic light-emitting diode (OLED) emitters among the most relevant types of luminophores: platinum(ii), iridium(iii), and osmium(ii) complexes, unimolecular thermally activated delayed fluorescence (TADF) emitters and exciplexes, fluorescent dyes, and the emerging group of stable luminescent radicals. We dive into the structural design principles of emitters with improved NIR efficiency. In our discussion we consider unimolecular emission as well as that arising from aggregated luminophores, as the latter often leads to a longer wavelength NIR. Our analysis of numerous emitters from various groups concludes, without a doubt, that platinum(ii) complexes present superior efficiency in nearly all wavelengths from 700 to 1000 nm. We report on an apparent NIR boundary line, which appears to be a current limitation for NIR OLED efficiency. Presently, virtually only platinum(ii) complexes exceed the efficiency limit set out by this boundary. So far efficient OLEDs, i.e. >1% external quantum efficiency, emitting significantly beyond 1000 nm have not yet been reported.
Publisher
Royal Society of Chemistry
Source Title
Materials Chemistry Frontiers
Volume (Issue)
8
Page
1731-1766
Date of Issued
2024-01-26
Language
English
Handle URL
https://hdl.handle.net/11094/98091
eISSN
20521537
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1039/D3QM01067H
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
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Category
学術雑誌論文 Journal Article