High-efficiency organic light-emitting diodes of phosphorescent PtAg<sub>2</sub>heterotrinuclear acetylide complexes supported by triphosphine

Li, Yi-Peng; Fan, Xinxia; Wu, Yue; Zeng, Xian-Chong; Wang, Jin-Yun; Wei, Qing; Chen, Xiaoming

doi:10.1039/c7tc00382j

Cited by 33 publications

(18 citation statements)

References 55 publications

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“…[ 105,107,132,152–157 ] In contrast to the above mentioned, silver(I) complexes have scarcely been applied to lighting devices. [ 158–161 ]…”

Section: Organometallic Tadf Compounds For Lightingmentioning

confidence: 99%

“…Although palladium(II) and platinum(II) complexes are usually phosphorescent emitters, [ 12,160,188–197 ] some of them have also shown TADF behavior. [ 28,87,193,198–200 ] In 2015, Li reported vapor‐processed OLEDs based on two palladium(II) complexes Pd1 and Pd2 (Table 8 and Scheme ), featuring both phosphorescence and TADF emissions.…”

Section: Organometallic Tadf Compounds For Lightingmentioning

confidence: 99%

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Recent Advances in Solid‐State Lighting Devices Using Transition Metal Complexes Exhibiting Thermally Activated Delayed Fluorescent Emission Mechanism

Mahoro

Fernández‐Cestau

Renaud

et al. 2020

Advanced Optical Materials

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This review focuses on the state‐of‐the‐art of solid‐state lighting devices (SSLDs)—that is, organic light‐emitting diodes (OLEDs) and light‐emitting electrochemical cells (LECs)—prepared with transition metal complexes featuring thermally activated delayed fluorescence (TADF) mechanism. First, the TADF mechanism is briefly introduced, as well as the experimental and theoretical methods applied to study TADF in transition metal complexes. Second, the review presents an exhaustive overview of OLED and LEC devices incorporating organometallic TADF emitters. For each type of device, the description of TADF is organized by respective elements focusing on each emission color, that is, blue, green/yellow, orange/red and, if existing, white. Finally, insights and future potential development of organometallic TADF emitters for lighting devices are comprehensively discussed. Overall, this review complements recent ones focused on TADF small molecules applied to the SSLD field.

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“…[ 105,107,132,152–157 ] In contrast to the above mentioned, silver(I) complexes have scarcely been applied to lighting devices. [ 158–161 ]…”

Section: Organometallic Tadf Compounds For Lightingmentioning

confidence: 99%

Section: Organometallic Tadf Compounds For Lightingmentioning

confidence: 99%

Recent Advances in Solid‐State Lighting Devices Using Transition Metal Complexes Exhibiting Thermally Activated Delayed Fluorescent Emission Mechanism

Mahoro

Fernández‐Cestau

Renaud

et al. 2020

Advanced Optical Materials

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“…Although (hetero-)metallic clusters are beyond the scope of this review, it is worth to mention some recent reports from Chen and co-workers on trimetallic systems based on PtAu 2 [21–22] and PtAg 2 [23–24] core. Motivated by very high PLQYs in doped films, OLED devices were fabricated showing remarkable efficiency attaining EQE of 21.5% at a luminance of 1029 cd m −2 with small roll-off [21].…”

Section: Reviewmentioning

confidence: 99%

Recent advances in phosphorescent platinum complexes for organic light-emitting diodes

Cebrián

Mauro

2018

Beilstein J. Org. Chem.

150

114

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Phosphorescent organometallic compounds based on heavy transition metal complexes (TMCs) are an appealing research topic of enormous current interest. Amongst all different fields in which they found valuable application, development of emitting materials based on TMCs have become crucial for electroluminescent devices such as phosphorescent organic light-emitting diodes (PhOLEDs) and light-emitting electrochemical cells (LEECs). This interest is driven by the fact that luminescent TMCs with long-lived excited state lifetimes are able to efficiently harvest both singlet and triplet electro-generated excitons, thus opening the possibility to achieve theoretically 100% internal quantum efficiency in such devices. In the recent past, various classes of compounds have been reported, possessing a beautiful structural variety that allowed to nicely obtain efficient photo- and electroluminescence with high colour purity in the red, green and blue (RGB) portions of the visible spectrum. In addition, achievement of efficient emission beyond such range towards ultraviolet (UV) and near infrared (NIR) regions was also challenged. By employing TMCs as triplet emitters in OLEDs, remarkably high device performances were demonstrated, with square planar platinum(II) complexes bearing π-conjugated chromophoric ligands playing a key role in such respect. In this contribution, the most recent and promising trends in the field of phosphorescent platinum complexes will be reviewed and discussed. In particular, the importance of proper molecular design that underpins the successful achievement of improved photophysical features and enhanced device performances will be highlighted. Special emphasis will be devoted to those recent systems that have been employed as triplet emitters in efficient PhOLEDs.

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“…The trans -bisethynylbis(trialkylphosphine)platinum(II) building block, [Pt] , is a versatile unit for the design of photonic materials showing potential applications in nonlinear optics − and light-emitting diodes. − In the field of solar cells, the [Pt] -containing materials are also active irrespective of whether they are used as molecules or within polymer chains. , Indeed, dye-sensitized solar cells − and bulk heterojunction solar cells (BHJSCs) − were designed. To the best of our knowledge, the highest photoconversion efficiency (PCE) was recently reported to be 5.29% for a BHJSC containing the [Pt] moiety. , Concurrently, studies on complexes bearing [Pt] units indicated that the charge separated states are formed in the short picosecond (ps) time scale − and that the [Pt] unit could mediate the electron transfer. − Over the years, it was suggested that anchoring diphenylamine pendants as electron-rich groups , and using the electron-deficient anthraquinone, AQ , moiety , should improve the PCEs of [Pt] -containing materials for solar cells.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Photoinduced Electron Transfers in Platinum(II)-Anthraquinone Diimine Polymer/PCBM Films

Juvenal

Schlachter

et al. 2019

J. Phys. Chem. C

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Two fluorescent polymers ([Pt]-(AQI(BM-PA) x )) n ([Pt] = trans-bis(ethynylbenzene)-bis-(tributylphosphine)platinum(II); AQI = anthraquinone diimine; BMPA = bis(para-methoxyphenyl)amine), P1 (x = 1; τ F ≤ 8 ps) and P2 (x = 2; τ F = 10 ps, 298 K), were prepared and investigated as thin films in the presence of phenyl-C 61butyric acid methyl ester (PCBM) to probe the photoinduced electron transfer processes using steady-state and timeresolved fluorescence and femtosecond-transient absorption spectroscopy (fs-TAS). P1 and P2 undergo an efficient oxidative photoinduced electron transfer (Px* + PCBM → Px +• + PCBM −• ; x = 1, 2) in solution and as films. Based on fs-TAS, the time scale for the photogenerated charge separated state forms within the excitation pulse (i.e., ≤150 fs). During the course of this study, the nature of the lowest energy emissive excited state was identified as a charge transfer state defined as [Pt] → AQI (major component) and BMPA → AQI (minor component) with the aid of density functional theory (DFT) and time-dependent DFT computations.

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High-efficiency organic light-emitting diodes of phosphorescent PtAg₂heterotrinuclear acetylide complexes supported by triphosphine

Abstract: Platinum(ii)–silver(i) heterometallic cluster complexes are used as a new type of phosphorescent dopant to achieve high-efficiency OLEDs with 67.4 cd A−1peak current efficiency (CE) and 17.4% external quantum efficiency (EQE).

Cited by 33 publications

References 55 publications

Recent Advances in Solid‐State Lighting Devices Using Transition Metal Complexes Exhibiting Thermally Activated Delayed Fluorescent Emission Mechanism

Recent Advances in Solid‐State Lighting Devices Using Transition Metal Complexes Exhibiting Thermally Activated Delayed Fluorescent Emission Mechanism

Recent advances in phosphorescent platinum complexes for organic light-emitting diodes

Ultrafast Photoinduced Electron Transfers in Platinum(II)-Anthraquinone Diimine Polymer/PCBM Films

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High-efficiency organic light-emitting diodes of phosphorescent PtAg2heterotrinuclear acetylide complexes supported by triphosphine

Abstract: Platinum(ii)–silver(i) heterometallic cluster complexes are used as a new type of phosphorescent dopant to achieve high-efficiency OLEDs with 67.4 cd A−1peak current efficiency (CE) and 17.4% external quantum efficiency (EQE).

Cited by 33 publications

References 55 publications

Recent Advances in Solid‐State Lighting Devices Using Transition Metal Complexes Exhibiting Thermally Activated Delayed Fluorescent Emission Mechanism

Recent Advances in Solid‐State Lighting Devices Using Transition Metal Complexes Exhibiting Thermally Activated Delayed Fluorescent Emission Mechanism

Recent advances in phosphorescent platinum complexes for organic light-emitting diodes

Ultrafast Photoinduced Electron Transfers in Platinum(II)-Anthraquinone Diimine Polymer/PCBM Films

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High-efficiency organic light-emitting diodes of phosphorescent PtAg₂heterotrinuclear acetylide complexes supported by triphosphine