Confinement of charged particles and non-neutral plasma in a magnetic mirror

Wang, Zai-Xin; Gou, Xueqiang; Wang, Fangping; Zhang, Heng; Zhang, Sheng; Duan, Wen‐Shan

doi:10.1140/epjd/s10053-022-00500-9

Cited by 5 publications

(5 citation statements)

References 43 publications

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“…However, the application and development of LIBs have been limited to some extent due to lithium resources shortage, high cost, and potential safety hazards of organic electrolyte. [2][3][4] Potassium-ion batteries (KIBs) and sodium-ion batteries (SIBs) as the choice of the next generation of electrical energy storage batteries, are feasible for massive applications due to their advantages of relatively rich resources, low cost, and high energy and power density. However, safety and environmental issues remain a bottleneck because of serious volume expansion caused by the relatively large radius of potassium ions (1.38 A) and sodium ions (1.02 A) and the application of organic electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc‐Ion Batteries

Zhang

Liu

et al. 2023

Energy & Environ Materials

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Aqueous zinc‐ion batteries (AZIBs) are regarded as promising electrochemical energy storage devices owing to its low cost, intrinsic safety, abundant zinc reserves, and ideal specific capacity. Compared with other cathode materials, manganese dioxide with high voltage, environmental protection, and high theoretical specific capacity receives considerable attention. However, the problems of structural instability, manganese dissolution, and poor electrical conductivity make the exploration of high‐performance manganese dioxide still a great challenge and impede its practical applications. Besides, zinc storage mechanisms involved are complex and somewhat controversial. To address these issues, tremendous efforts, such as surface engineering, heteroatoms doping, defect engineering, electrolyte modification, and some advanced characterization technologies, have been devoted to improving its electrochemical performance and illustrating zinc storage mechanism. In this review, we particularly focus on the classification of manganese dioxide based on crystal structures, zinc ions storage mechanisms, the existing challenges, and corresponding optimization strategies as well as structure–performance relationship. In the final section, the application perspectives of manganese oxide cathode materials in AZIBs are prospected.

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Section: Introductionmentioning

confidence: 99%

Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc‐Ion Batteries

Zhang

Liu

et al. 2023

Energy & Environ Materials

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“…Followed by tis work, several ICz based MR‐emitters have been developed by managing the configuration of N atom in PAH framework. [ 149 ] Due to the lack of strong SRCT, these materials barely displayed TADF property. Despite of their promising narrow FWHM and high PLQY, almost all the ICz based MR‐type emitters fell in the deep‐blue region because of the weak SRCT, limited π‐conjugation and lack of acceptor units, thus it is difficult to shift their emission wavelength beyond blue region, especially red emitter design is highly challenging.…”

Section: Acceptor Free Long‐wavelength Mr‐tadf Emittersmentioning

confidence: 99%

“…However, due to the atomically separated HOMO and LUMO orbitals, the MR‐TADF emitters possess feeble CT character, hence it is highly challenging to realize bathochromic shifted emission from blue‐green region. [ 51–149 ] However, the long‐wavelength ( λ em > 550 nm) MR‐TADF emitters with narrow FWHM are scarcely reported due to the limited scope for structural diversity, weak short range charger transfer (SRCT) and complicated synthetic procedures. [ 85–113 ] Therefore, it is urgent need to develop new emitter designs for constructing long‐wavelength MR‐TADF emitters without compromising the FWHM.…”

Section: Introductionmentioning

confidence: 99%

Marching Toward Long‐Wavelength Narrowband Emissive Multi‐Resonance Delayed Fluorescence Emitters for Organic Light Emitting Diodes

Keerthika,

Konidena

2023

Advanced Optical Materials

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Over the past decade, thermally activated delayed fluorescence (TADF) emitters have garnered tremendous impetus because of their ability to harvest 100% excitons for the light emission in organic light emitting diodes (OLEDs). However, despite their superior external quantum efficiencies (> 35%), the broad emission spectra with associated full‐width‐at‐half maximum (FWHM > 70 nm) present a limiting factor that must be solved. Recently, multiple‐resonance TADF (MR‐TADF) materials based on the heteroatom doped polyaromatic hydrocarbons have gained astonishing attention owing to their remarkable narrowband emission (FWHM < 30 nm). However, emission of the majority of reported MR‐TADF emitters falls in the blue/green region, which inevitably jeopardizes their application in full‐color OLEDs. Therefore, there is an urgent need to develop the new molecular designs for expanding the color‐gamut of MR‐TADF emitters, i.e., λem > 550 nm without compromising the narrowband emission. To the best of current knowledge, no detailed reviews focusing on the different design strategies for producing long‐wavelength (> 550 nm) MR‐TADF emitters have been reported to date. To this end, a review highlighting the recent design advances for constructing long‐wavelength MR‐TADF emitters is presented, and their photophysics and OLED performance is discussed. Finally, the current status and future prospects of long‐wavelength MR‐TADF materials are discussed.

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“…Recently, narrowband MR emitters based on fused indolo[3,2,1-jk]carbazole (fICz) frameworks, which contain no acceptor atom/group, have been proposed. [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59] Such emitters also show alternate distributions of HOMO and LUMO on single atoms due to the different electron negativities of C, N atoms. [42][43]48] With the fICZ frameworks, various violet/deep-blue narrowband emitters have been developed.…”

Section: Introductionmentioning

confidence: 99%

“…Red-shifting the emission and triggering RISC/TADF in fICZ-based narrowband emitters have remained challenges. [59] Herein we report for the first time narrowband green TADF emitters based on a (Scheme 1a), is selected as the parent skeleton. bisICZ itself is a deep-blue fluorescent emitter with the emission maximum/FWHM at 429/23 nm in solution.…”

Section: Introductionmentioning

confidence: 99%

Narrowband Green Thermally-activated Delayed Fluorescence Emitters Based on Bis-fused Indolo[3,2,1-jk]carbazole with Peripheral Donor Decoration

Zhang,

Wang,

Cao

et al. 2024

Preprint

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Fused indolo[3,2,1-jk]carbazole (fICZ) framework has emerged as a new paradigm for developing narrowband emitters, but red-shifting the emission and triggering reverse intersystem crossing (RISC) for thermally-activated delayed fluorescence (TADF) have remained challenges. Here, narrowband green TADF emitters based on a fICZ framework are reported with a peripheral donor decoration strategy. By attaching electron-donating diphenylamino-type groups onto the highest occupied molecular orbital (HOMO)-dominating positions of bis-fused indolo[3,2,1-jk]carbazole, the HOMO is largely destabilized and the emission is markedly red-shifted (by > 70 nm) with retained narrow bandwidth. In toluene solution, the emitters show green emission with emission maximums at 500−523 nm and small full-widths at half maximums at 26−28 nm. Importantly, the donor decoration narrows the singlet-triplet energy gap and introduces a higher-lying long-range charge-transfer triplet state having considerable spin-orbital coupling with the emissive singlet state, which behaves as an intermediate triplet state to facilitate RISC. In doped films, the emitters show efficient narrowband green TADF emission. Solution-processed organic light-emitting diodes (OLEDs) using the emitters afford green emission close to the NTSC standard and high external quantum efficiencies up to 24.7%, which are among the most efficient solution-processed narrowband green OLEDs.

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Confinement of charged particles and non-neutral plasma in a magnetic mirror

Cited by 5 publications

References 43 publications

Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc‐Ion Batteries

Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc‐Ion Batteries

Marching Toward Long‐Wavelength Narrowband Emissive Multi‐Resonance Delayed Fluorescence Emitters for Organic Light Emitting Diodes

Narrowband Green Thermally-activated Delayed Fluorescence Emitters Based on Bis-fused Indolo[3,2,1-jk]carbazole with Peripheral Donor Decoration

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