基于具有不同 N^O-ancillary 配体的[Ir(C^N)2(N^O)]-双杂吲哚(III)-络合物的高效全溶液工艺和高色纯（超过 800 纳米）近红外聚合物发光二极管 (NIR-PLED)

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-02-24 DOI:10.1016/j.jlumin.2025.121148

Youquan Chen , Yu Chen , Tiendrebeogo Salamata, Sicheng Yao, Chunmei Yuan, Xingqiang Lü, Guorui Fu

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Efficient all-solution-processed and color-purity (over 800 nm) near-infrared polymer light-emitting diode (NIR-PLED) based on [Ir(C^N)2(N^O)]-bis-heteroleptic Ir(III)-complexes with different N^O-ancillary ligands

The development of efficient all-solution-processed color-purity Ir(III)-complex-based NIR-PLEDs especially with maximum emission wavelength over 800 nm is under-explored. In this study, using the highly rigid Htbpz (tribenzo[a,c,i]phenazine) as HC^N main ligand, three new Ir(III)-complexes [Ir(tbpz)₂(Lⁿ)] (n = 1–3; 1–3) with comparable color-purity NIR-emissions peaking at 833 nm, were developed. Moreover, based on the doping of the efficient (Φ_PL = 2.5 %) [Ir(tbpz)₂(L³)] (3) and usage of a polymeric electron-transport layer, the first-example of all-solution-processed color-purity (λ_em = 835 nm) Ir(III)-complex-based NIR-PLED endowing the η_EQE^Max of 0.41 %, was realized. This work can pave one way to Ir(III)-complexes for all-solution-processed color-purity NIR-PLEDs.

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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.