Ultrahigh-performance blue organic light-emitting diodes based on SiO2 coated Ag nanocubes and its working mechanism

Yu, Tianyan; Deng, Lingling; Xia, Pengfei; Lu, Yunxiang; Zhan, Nan; Chen, Shufen

doi:10.1016/j.orgel.2019.105388

Cited by 5 publications

(9 citation statements)

References 22 publications

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“…Moreover, the thin silica shell minimizes the exciton quenching and acts as a spacer to prevent the shortcuts induced by AgAu nanostars. Similar core–shell structures with metallic core and silica shell have also been reported by other groups, such as Ag nanocubes coated with silica shell, [ 37 ] Ag nanoparticles coated with silica shell. [ 104 ]…”

Section: Multifunctional Np Platform In Oledssupporting

confidence: 81%

“…[ 36 ] For instance, the multifunctional metal NPs can be overcoated with a thin optical shell such as transparent silica to increase light scattering, reduce toxicity, and increase water stability, making it multifunctional depending on the functions needed in OLEDs. [ 37–39 ]…”

Section: Unique Properties Of Npsmentioning

confidence: 99%

“…f,g) Reproduced with permission. [ 37 ] Copyright 2018, Elsevier V. B. h) Device structures of OLEDs with insertion of Ag NPs sublayer in ETL. i) Current efficiency versus current density behaviors of OLEDs with varied Ag NPs sublayer locations in ETL and the control device without Ag NPs sublayer.…”

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

“…In addition, metal NPs can also be introduced into HTL or the HTL/EML interface to realize the LSPR effects in OLEDs. [ 37,60,61,62 ] Zhu and co‐workers [ 60 ] reported an efficient blue OLED device by embedding an ultrathin Ag NP layer in HTL (Figure 4c), exhibiting a 2.5 times higher current efficiency (31.50 cd A −1 ) compared to that of the control device without Ag NP layer (12.75 cd A −1 )(Figure 4d). The EL enhancement is due to the coupling between localized surface plasmons and excitons induced by the Ag NP layer in HTL (Figure 4e).…”

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

“…The embedded Ag NP layer in HTL is also beneficial for the efficiency roll‐off reduction in phosphorescent OLEDs. Ag@SiO 2 core–shell NPs were also incorporated at the HTL/EML interfaces by Chen's group (Figure 4f), [ 37 ] where the SiO 2 shell thickness was altered to adjust the distance between NPs and EML. The blue OLEDs with Ag@SiO 2 NPs exhibited a significantly enhanced current efficiency of 97 cd A −1 , nearly four times of that of the control device without Ag@SiO 2 NPs, and also the shell thickness had great impact on the device efficiency (Figure 4g).…”

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

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Toward High Efficiency Organic Light‐Emitting Diodes: Role of Nanoparticles

Zhang

Sun

2021

Advanced Optical Materials

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The rapid development of nanotechnology for the last 30 years has enabled a rapid expansion in the applications of functional nanoparticles (NPs) on optoelectronic devices. Especially, NPs are of high significance in organic light‐emitting diodes (OLEDs) as they provide feasible solutions to the enduring challenges related to higher device efficiency. The use of NPs with designed structure and functionality is demonstrated, indicative of their great application potentials in OLEDs. Herein, the recent advances in OLEDs with the utilization of functional NPs are summarized. Starting with a brief overview about the unique properties of NPs, comprehensive roles of NPs in OLEDs, which include improving carrier injection abilities, local surface plasmonic resonance, light scattering, and magnetic field effects, are discussed together with their latest research progresses. Furthermore, one‐component and multicomponent heterostructured NPs with multifunctional capabilities in OLEDs are overviewed. Following the summarization of the roles of NPs in OLEDs and their latest research progress, a brief conclusion and outlook regarding the future research directions of highly efficient OLEDs by incorporation of NPs are provided.

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Section: Multifunctional Np Platform In Oledssupporting

confidence: 81%

Section: Unique Properties Of Npsmentioning

confidence: 99%

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

See 3 more Smart Citations

Toward High Efficiency Organic Light‐Emitting Diodes: Role of Nanoparticles

Zhang

Sun

2021

Advanced Optical Materials

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High Efficiency over 15% by Breaking the Theoretical Efficiency Limit of Fluorescent Organic Light-Emitting Diodes with Localized Surface Plasmon Resonance Effects

Lee

Nam

Yeo

et al. 2023

ACS Appl. Mater. Interfaces

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The theoretical efficiency limit of fluorescence organic light-emitting diodes (OLEDs) was successfully surpassed by utilizing the localized surface plasmon resonance (LSPR) effect with conventional emissive materials. The interaction between polaritons and plexcitons generated during the LSPR process was also analyzed experimentally. As a result, the external quantum efficiency (EQE) increased dramatically from 6.01 to 15.43%, significantly exceeding the theoretical efficiency limit of fluorescent OLEDs. Additionally, we introduced a new concept of the LSPR effect, called "LSPR sensitizer", which allowed for simultaneous improvement in color conversion and efficiency through cascade transfer of the LSPR effect. To the best of our knowledge, the EQE and the current efficiency of our LSPR−OLED are the highest among LSPR-based fluorescent OLEDs to date.

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