Solid‐State Red Laser with a Single Longitudinal Mode from Carbon Dots

Zhang, Yongqiang; Song, Haoqiang; Wang, Lu; Yu, Jingkun; Wang, Boyang; Hu, Yong‐Sheng; Zang, Shuang‐Quan; Yang, Bai; Lu, Siyu

doi:10.1002/ange.202111285

Cited by 9 publications

(3 citation statements)

References 70 publications

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“…The absorption peak at 1610–1635 cm –1 is due to the stretching vibration of OC–N and OC–O. The characteristic absorption peaks located at 1574, 1400, and 1055 cm –1 originate from the characteristic vibration peak of the benzene ring, deformed vibration of C–N, and stretching vibration of C–O. − FT-IR results were confirmed by the XPS deconvolution spectra. As Figure B–D shows, the C 1s image proves the existence of CC/C–C (284.6 eV), C–N/C–O (285.9 eV), and OC–N/OC–O (289.9 eV).…”

Section: Resultsmentioning

confidence: 57%

Enhanced Aggregation-Induced Phosphorescence of Carbon Dots for Information Encryption Applications

Chao

Dong

Wang

et al. 2022

ACS Appl. Nano Mater.

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Aggregation-induced phosphorescence (AIP) has attracted much attention for its unique luminescent characteristics. Nevertheless, this fascinating phenomenon is rarely reported in the field of carbon dots (CDs). Herein, a simple method to prepare CDs simultaneously with dispersion-state fluorescence, aggregation-state fluorescence, and phosphorescence is presented by a one-step solvothermal process. The resultant AIP CDs (A-CDs) display a long afterglow lifetime of 0.51 s in the aggregation state, lasting about 5 s to the naked eye. The phosphorescence emission of A-CDs resulted from the rigid, protective structure due to the aggregation state. In addition, inorganic silica has been employed as a doping matrix to effectively improve phosphorescent properties (1.11 s). Benefitting from the unique luminescence feature and excellent water dispersibility, the A-CDs can be dispersed directly in water, and the phosphorescent emission could be controlled by regulating the concentration, thus enabling information encryption.

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Section: Resultsmentioning

confidence: 57%

Enhanced Aggregation-Induced Phosphorescence of Carbon Dots for Information Encryption Applications

Chao

Dong

Wang

et al. 2022

ACS Appl. Nano Mater.

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“…As a new type of carbon-based fluorescent nanomaterial, CDs have recently received extensive research attention for their diverse physicochemical properties, abundant surface groups (such as amino, carboxyl, and hydroxyl groups, etc. ), environmental friendliness, and low cost. − Among them, simple preparation methods, high PLQY, low toxicity, and tunable emission spectra are considered by researchers as the ideal luminophores in LSCs. , …”

Section: Single-layer Lscsmentioning

confidence: 99%

Achieving High-Efficiency Large-Area Luminescent Solar Concentrators

Cao

Zhao

Gong

2023

JACS Au

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Luminescent solar concentrators (LSCs) are semitransparent windows that are able to generate electricity from sunlight absorption. LSCs have shown huge promise for realizing building-integrated photovoltaics (BIPV). Unfortunately, to date, the power conversion efficiency (PCE) of LSCs is still very low which dramatically hampers their practical applications. In this Perspective, We summarize and review the latest developments of LSCs by looking at different structures. Among others, we focus more on the next developments in the field of LSCs, i.e., the possibility of high PCE, large area, mass production, and durability needed for future industrial development. We hope to promote the application of uniform testing standards and to draw attention to industrial development, toxicity, and durability. Then, we will provide a critical assessment of the field of LSCs. Finally, the challenge and solution will be discussed.

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“…13 A SiO 2 -CDots thin film (emitting at 588 nm) and SiO 2 -CDots powder (emitting at 597 nm) were obtained by physically embedding CDots into a silicon dioxide matrix. 7 Furthermore, dual-wavelength emitting solid-state CDots have been developed owing to their great potential applications in storage 17,18 and solid-state lasing, 19 and photonic and lightconverting devices, which require broad emission covering the whole visible region. 20 For instance, the dual-emission solidstate CDots with the wavelengths of 410 nm and 500 nm by the matrices of Na ions.…”

Section: Introductionmentioning

confidence: 99%