Engineering of aggregation-induced emission luminogens by isomeric strategy to achieve high-performance optoelectronic device

Wen, Lili; Zang, Chun-Xiu; Gao, Ying; Tao, Yanli; Li, Guangfu; Shan, Guo‐Gang; Sun, Haizhu; Xie, Wenfa; Su, Zhong‐Min

doi:10.1016/j.dyepig.2019.107912

Cited by 24 publications

(9 citation statements)

References 46 publications

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“…Their crystalline geometry suggests that the thermally deposited thin film is good for carrier migration. 41,42 For PI-DPO-TPA in Fig. 3a, the intermolecular interaction is guided by the dual hydrogen bonds between the oxygen atom on the carbonyl of the diphenylmethanone (DPO) and the hydrogen atoms on the phenyl group (B unit) of the TPA moiety.…”

Section: Crystal Structure Analysismentioning

confidence: 99%

“Like–Likes–Like” strategy for the design of electron transport materials and emitters with facilitated interlayer electron transport and improved efficiency

Lin

Iqbal

et al. 2022

J. Mater. Chem. C

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Section: Crystal Structure Analysismentioning

confidence: 99%

“Like–Likes–Like” strategy for the design of electron transport materials and emitters with facilitated interlayer electron transport and improved efficiency

Lin

Iqbal

et al. 2022

J. Mater. Chem. C

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“…Based on this, the single-layer devices showed even higher efficiencies with an extremely low efficiency roll-off, achieving CE max values as high as 7.12 and 7.80 cd A −1 using BPTPETPAI and 2TPETPAI, respectively. Four isomeric AIEgens, TPE-3Cz-mPBI, TPE-3CzpPBI, TPE-2Cz-mPBI, and TPE-2Cz-pPBI, were constructed by varying the linkage positions of the electron acceptor 1,2-diphenyl-1H-benzo[d]imidazole (PBI), the electron donor Cz, and AIE-active triphenylethene functional groups [107]. Compared with TPE-3Cz-mPBI and TPE-3Cz-pPBI, TPE-2Cz-mPBI and TPE-2Cz-pPBI exhibited more excellent AIE activity, with fluorescence quantum yields of up to 72.5 and 89.7% in the neat films.…”

Section: Bi-based Fluorescent Materialsmentioning

confidence: 99%

Imidazole derivatives for efficient organic light-emitting diodes

Zhuang

Pan

et al. 2020

Journal of Information Display

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Since the first development of organic light-emitting diodes (OLEDs) in 1987, imidazole derivatives, mainly including phenanthroimidazole (PI) and benzimidazole (BI), have increasingly attracted attention. Their strong electron-withdrawing properties make them suitable for emitters, hosts, and electron-transporting materials (ETMs). In this review, an overview of the recent developments regarding OLEDs based on imidazole derivatives, especially the relationship between the molecule structure and the device performance as fluorescent and host materials, is given.

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“…[13] AIE materials are nonemissive in dilute solution but appear strong luminous emission in aggregate state due to the restriction of intramolecular motion (RIM). [14,15] Since then, AIE materials attracted much considerable attention and had been applied to various fields, such as optoelectronic devices [16] and bioimaging. [17] Some efforts had been concentrated on high-performance PSCs accompanied with AIE molecules.…”

Section: Introductionmentioning

confidence: 99%

When Aggregation‐Induced Emission Meets Perovskites: Efficient Defect‐Passivation and Charge‐Transfer for Ambient Fabrication of Perovskite Solar Cells

Zhang

Song

et al. 2022

Chemistry A European J

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The intrinsic defects in perovskite film can serve as non‐radiative recombination center to limit the performance and stability of metal halide perovskite solar cells (PSCs). The additive engineering in perovskite film is always applied to produce high‐efficiency PSCs in recent years. Here, a typical donor‐acceptor (D−A) structured aggregation‐induced emission (AIE) molecule tetraphenylethene‐2‐dicyano‐methylene‐3‐cyano‐4,5,5‐trimethyl‐2,5‐dihydrofuran (TPE‐TCF) was introduced into perovskite film. The D−A structure of TPE‐TCF molecule provided additional charge transfer channels, contributing to transporting electron of TPE‐TCF‐based device. The cyano (C≡N) of TPE‐TCF can interact with the uncoordinated Pb to from a relatively stable intermediate, PbI2⋅TPE‐TCF, resulting in the slower crystal growth, reduced the defects at the grain boundaries and suppressed carrier recombination. As a consequence, the power conversion efficiency (PCE) of TPE‐TCF‐modified PSCs achieved a remarkably enhanced from 15.63 to 19.66 % with negligible hysteresis, which was prominent in methylammonium lead iodide‐based devices fabricated under ambient condition. Furthermore, the PSCs modified by AIE molecule possessed an outstanding stability and maintain about 86 % of the initial PCE after 300 h storage in air at 25–35 °C with a high relative humidity (RH) of ≈85 %. This work suggests that incorporating AIE molecule into perovskite is a promising strategy for facilitating high‐performance PSCs commercialization in ambient environment without glovebox.

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Engineering of aggregation-induced emission luminogens by isomeric strategy to achieve high-performance optoelectronic device

Cited by 24 publications

References 46 publications

“Like–Likes–Like” strategy for the design of electron transport materials and emitters with facilitated interlayer electron transport and improved efficiency

“Like–Likes–Like” strategy for the design of electron transport materials and emitters with facilitated interlayer electron transport and improved efficiency

Imidazole derivatives for efficient organic light-emitting diodes

When Aggregation‐Induced Emission Meets Perovskites: Efficient Defect‐Passivation and Charge‐Transfer for Ambient Fabrication of Perovskite Solar Cells

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