High color-purity (λem = 845 nm) near-infrared (NIR) polymer light-emitting diode (PLED) based on one [ir(C^N)2(N^O)]-bis-heteroleptic Ir(III)-complex

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-12-10 DOI:10.1016/j.jlumin.2024.121025

Yan Zhang , Youquan Chen , Tiendrebeogo Salamata, Sicheng Yao, Xingqiang Lü, Guorui Fu, Haixia Ma

{"title":"High color-purity (λem = 845 nm) near-infrared (NIR) polymer light-emitting diode (PLED) based on one [ir(C^N)2(N^O)]-bis-heteroleptic Ir(III)-complex","authors":"Yan Zhang , Youquan Chen , Tiendrebeogo Salamata, Sicheng Yao, Xingqiang Lü, Guorui Fu, Haixia Ma","doi":"10.1016/j.jlumin.2024.121025","DOIUrl":null,"url":null,"abstract":"<div><div>The development of efficient color-purity near-infrared iridium(III) complexes with emission beyond 800 nm is extremely challenging. Herein, we report a new [Ir(C^N)2(N^O)]-bis-heteroleptic Ir(III)-complex [Ir(tbpz)2(L)] using Htbpz (tribenzo[a,c,i]phenazine) as the highly conjugated HC^N main ligand and HL ((E)-2-(phenylimino)methyl)phenol) as the N^OH ancillary ligand. The photophysical result of [Ir(tbpz)2(L)] demonstrates that its color-purity narrowband (λem = 835 nm; ΦPL = 1.9 %) NIR-emission with a FWHM (full width at half maximum) of 45 nm is arisen from the 3ILCT-dominant (ILCT = intraligand charge transfer) T1 state. The solution-processed NIR-PLEDs based on [Ir(tbpz)2(L)] could achieve the desirable color-purity NIR-emission peaking at 845 nm with the ηEQEMax values of 0.18–0.33 %.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"279 ","pages":"Article 121025"},"PeriodicalIF":3.3000,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Luminescence","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022231324005891","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}

引用次数: 0

Abstract

The development of efficient color-purity near-infrared iridium(III) complexes with emission beyond 800 nm is extremely challenging. Herein, we report a new [Ir(C^N)₂(N^O)]-bis-heteroleptic Ir(III)-complex [Ir(tbpz)₂(L)] using Htbpz (tribenzo[a,c,i]phenazine) as the highly conjugated HC^N main ligand and HL ((E)-2-(phenylimino)methyl)phenol) as the N^OH ancillary ligand. The photophysical result of [Ir(tbpz)₂(L)] demonstrates that its color-purity narrowband (λ_em = 835 nm; Φ_PL = 1.9 %) NIR-emission with a FWHM (full width at half maximum) of 45 nm is arisen from the ³ILCT-dominant (ILCT = intraligand charge transfer) T₁ state. The solution-processed NIR-PLEDs based on [Ir(tbpz)₂(L)] could achieve the desirable color-purity NIR-emission peaking at 845 nm with the η_EQE^Max values of 0.18–0.33 %.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.