Advanced Optical Materials
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2017
·Vol. 5
·期 19
·1700416
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IF 6.875
Zhen Tian,Xutao Zhang,Di Li,Ding Zhou,Pengtao Jing,Dezhen Shen,Songnan Qu,Radek Zboril,Andrey L. Rogach
Light-emitting carbon dots (CDots) are widely investigated due to their distinct merits. However, it is still a challenge to modulate their bandgap emissions and conquer their aggregation-induced luminescence quenching to achieve full-color highly emissive CDot-based phosphors. Herein, this study proposes an approach toward realization of full-color emissive CDots from two common precursors, citric acid and urea, through employing three different solvents (water, glycerol, and dimethylformamide) and their combinations in a solvothermal synthesis. Employing sodium silicate solution, this study further demonstrates the microwave-assisted method allowing to incorporate CDots into a silica network, which effectively prevents aggregation of CDots and results in strongly luminescent full-color inorganic CDot phosphors with photoluminescence quantum yields of 30–40%. Through deposition of the red- and green-emitting CDot phosphors on blue-emitting InGaN chips, white-light-emitting diodes are fabricated with Commission Internationale de L'Eclairage of (0.34, 0.31) and the color rendering index of 82.4, indicating their promising application for solid-state lighting.
研究领域:
材料科学
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光学工程
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高影响因子
JOURNAL OF LUMINESCENCE
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2021
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IF 3.599
Yaoyao Yang,Kangliang Peng,Yakun Deng,Youjun Zhao,Jinshui Ai,Xiao Min,Mengzhu Hu,Shuai Huang,Lixin Yu
carbon quantum dots (CQDs) have been widely studied due to their outstanding merits. In this article, it is important and interesting that the full-color-emission (blue, green and red light) CQDs are successfully obtained by a simple one step method. They are synthesized from two common precursors, m-phenylenediamines and phosphorus acid, using a one pot solvent engineering strategy. These CQDs can emit bright and stable light under a single-wavelength UV light . Moreover, the alterations of photoluminescence (PL) emission of the blue, green, red are ascribed to the surface states but not the particle size. The redshifted emission of the three CQDs samples is tentatively proposed to result from the contents of sp 2 -hybridized domains, surface C O and the pyridinic N.
研究领域:
材料科学
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光学
·
化学
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高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 4
·693
·
IF 5.719
Demin Huang,Haiyan Qi,Jing Jing,Rokayya Sami,Tao Jing,Sultan J. Alsufyani,Nada Benajiba,Nawal Madkhali
Nitrogen-doped carbon dots exhibiting excitation-dependent full-color emissions (F-NCDs) were prepared via the one-step hydrothermal method with citric acid and phenylenediamine. Specifically, the emission wavelength of the F-NCDs tuned from 452 nm to 602 nm due to the introduction of new energy levels by C=O and C=N functional groups. We exploited its stability in illumination, ionic strength, and pH, as well as its specificity, sensitivity, especially in ascorbic acid (AA) detection. F-NCDs could measure the AA concentration in the linear ranges of 0~0.1 and 0.1~1 mmol/L with the detection limit (LOD, S/N = 3) as low as 2.6 nmol/L. Additionally, we successfully detected AA in bovine serum with our F-NCDs and obtained the result within 1 min. Because of full-color emission features, we believe our F-NCDs have a great potential in fluorescent sensor detection.
研究领域:
分析化学
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生物传感
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材料科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yujie Cheng,Cuilu Xi,Denghao Li,Zewen Su,Beibei Xu,Yinyan Li,Lihui Huang,Gongxun Bai
Perovskite quantum dots (PQDs) have garnered significant attention for their exceptional optoelectronic properties, yet achieving precise luminescence control often involves complex chemical processes, and traditional display technologies face material and environmental limitations. In this study, we present an innovative approach utilizing three distinct halide perovskite quantum dot solutions to achieve tunable emission properties without additional chemical modifications. By employing femtosecond laser patterning, we successfully fabricated high-resolution (1.5 μm spacing), full-color (410–710 nm) quantum dot patterns with excellent environmental stability. This method eliminates the need for excessive chemical reagents and intricate masking steps, significantly streamlining the fabrication process and enhancing efficiency. Our findings highlight the potential of combining bandgap engineering with advanced patterning techniques, offering a practical foundation for green synthesis and simplified manufacturing processes in next-generation display technologies.
研究领域:
材料科学
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光学工程
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PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 25
·7905-7909
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IF 7.393
Heng Yang,Huihui Li,Rui Yuan,Junfeng Chen,Jingtai Zhao,Sheng Wang,Yufeng Liu,Qianli Li,Zhijun Zhang
Traditional inorganic scintillation crystals have a high stopping power to high-energy particles or rays; however, their wide applications are limited due to the fixed emission band. CsPbX3 (X = Cl, Br, I) perovskite nanocrystals (CsPbX3 NCs) have been proved to achieve full-color emission and effective X-ray detection, but failed to detect γ-rays effectively due to their weak absorption ability. Therefore, based on the advantages of the tunable spectra for CsPbX3 NCs and the high stopping ability of a BaF2 single crystal, a novel CsPbX3 NCs@BaF2 scintillation screen is developed ingeniously for realizing fast and full-color emission under high-energy ray excitation. The CsPbX3 NCs@BaF2 scintillation screen exhibits a tunable emission ranging from 435 to 648 nm under hard X-ray excitation. It is of note that the light yield of the CsPbBr3 NCs@BaF2 scintillation screen can reach up to 6300 photons per MeV and it shows a fast decay time component (∼11 ns) under γ-ray excitation. The purpose of this contribution is to provide a new solution for guiding the perovskite materials as potential scintillators for fast and full-color emission expanding the application of high-energy radiation detection.
研究领域:
材料科学
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物理学
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辐射检测
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高影响因子
Journal of Physical Chemistry C
·
2022
·
IF 4.177
Bin Xu,Zifei Wang,Jian Shen,Jie Li,Yuehan Jia,Tianlong Jiang,Zhenhua Gao,Xue Wang,Xiangeng Meng
Carbon dots (CDs) that simultaneously exhibit full-color and wide-range lifetime-tunable room-temperature phosphorescence (RTP) are of particular interest for potential applications in encryption and information security. However, achieving such CDs remains a great challenge thus far. This work reports on the development of a straightforward host–guest approach, where a metal–organic framework (MOF) host acts as an RTP activator of fluorescent CDs, with the RTP color dependent on the fluorescent component. The developed CDs@MOF composites exhibited RTP with a tunable emission wavelength from blue (478 nm) to red (631 nm), while the lifetime was tunable from 85.67 to 1064.21 ms. As far as is known, this is the report of CD-based RTP materials with simultaneous full-color and wide-range lifetime-tunable properties for the first time. In comparison to conventional 3D coding applications of CDs, the wide-range lifetime-tunable property allows for the creation of an additional dimension in encryption. Thus, the developed RTP CDs@MOF composites have potential as writable security inks for advanced 4D coding applications. This study paves a path for development of RTP CD-based nanomaterials with multiple controllable factors to meet the requirements of advanced applications.
研究领域:
材料科学
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光学
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信息安全
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DOI
高影响因子
Advanced Optical Materials
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2025
·
IF 7.2
Hongfang Liu,Jingying Miao,Zhihao Zhang,Shencheng Fu,Haiyang Xu,Xintong Zhang,Yichun Liu
Secure interaction of large-capacity 3D information urgently requires the development of an advanced encryption strategy. Although various types of photochromic holographic data storage are explored, building an accurate information encryption/decryption platform with simple preparation, high efficiency, and long-term stability remains a challenge. Herein, an ultra-security encryption platform based on large-scale and low-cost manufactured plasmonic plastics is proposed. Super optical lattices are constructed by the periodic arrangement of silver clusters in polyvinyl alcohol matrix, which enables the encrypted hologram to achieve precise mapping relationship between diffraction angle and optical chromaticity. Multiple pieces of holographically stereoscopic information with different image profiles and colors are cleverly hidden in a single recording point of the plastic. Only by determining the double-activated encryption keys of the observation angle and readout wavelength can the correct hologram pixels be displayed. The encrypted information in the super optical lattice is predicted to be stably stored for ≈91 years at room temperature (25 °C), covering almost one human cycle lifespan. The versatile configuration provides highly promising pathways for optical encryption, persistent data storage, and full-color displays.
研究领域:
光学
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信息安全
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材料科学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 35
·1903294
·
IF 15.621
Menghua Zhu,Yongqing Duan,Nian Liu,Hegeng Li,Jinghui Li,Peipei Du,Zhifang Tan,Guangda Niu,Liang Gao,YongAn Huang,Zhouping Yin,Jiang Tang
Hybrid perovskites show enormous potential for display due to their tunable emission, high color purity, strong photoluminescence and electroluminescence. For display applications, full-color and high-resolution patterning is compulsory, however, current perovskite processing such as spin-coating fails to meet these requirements. Here, electrohydrodynamic (EHD) printing, with the unique advantages of high-resolution patterning and large scalability, is introduced to fabricate full-color perovskite patterns. Perovskite inks via simple precursor mixing are prepared to in situ crystallize tunable- and bright-photoluminescence perovskite arrays without adding antisolvent. Through optimizing the EHD printing process, a high-resolution dot matrix of 5 µm is achieved. The as-printed patterns and pictures show full color and high controllability in micrometer dimension, indicating that the EHD printing is a competitive technique for future halide perovskite-based high-quality display.
研究领域:
材料科学
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Qianxi Yin,Rongrong Xu,Xiaoting Wang,Mulin Li,Xianliang Huang,Ziyi Chen,Teng Ma,An Xie,Jun Chen,Haibo Zeng
Lead halide perovskite anion exchange reactions tend to be spontaneous and rapid. To achieve precise control of anion exchange and modulate the bandgaps of perovskites to meet the demands in full-color displays, a laser-induced liquid-phase anion exchange method is developed in this paper. CsPbBr3 perovskites embedded in a polymer matrix are converted to CsPb(BrxCl1–x)3 and CsPb(BrxI1–x)3 perovskites, realizing the shift from green fluorescence to blue and red fluorescence. By changing the laser parameters, the anion exchange extent and luminescence wavelength are precisely tuned, with the maximum tuning wavelength range of 431–696 nm. Due to the focusing properties of the laser, the spatial position of anion exchange can be precisely controlled, which is significant for realizing fast and accurate patterning without masks. Based on this method, blue patterns with different light-emitting wavelengths are fabricated. RGB three-color patterns on a single perovskite composite film are successfully prepared by further replacement of halogen ions. More importantly, the polymer matrix provides ultraflexibility and good stability for the films; even if the composite films are arbitrarily folded or repeatedly bent, they can still maintain good luminous intensity. This method will show great potential in the field of flexible, full-color displays.
研究领域:
材料科学
·
光电子学
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PubMed
高影响因子
Nano Energy
·
2025
·
IF 17.1
Kaiyu Yang,Hongxi Zheng,Chao Zhong,Xingyun Huang,Qingkai Zhang,Kuibao Yu,Yuan Qie,Tao Chen,Hailong Hu,Fushan Li
The rapid development of near-eye display has put forward higher requirements for the resolution and image quality, while the performance of quantum dots (QDs) is virtually unlimited by pixel size, making them an ideal material for the next generation high-resolution display devices. However, there are still significant challenges in depositing multi-color pixels within the micron range and achieving high performance for the full-color quantum dot light emitting diodes (QLEDs). Herein, a combination of directional transfer printing and Langmuir-Blodgett (LB) technique was utilized to precisely transfer multi-color QDs arrays in the predetermined direction, and the full-color QDs arrays demonstrated fantastic morphology and uniform arrangement. As a result, the full-color QLEDs showed excellent performance with a resolution of 6350 pixels per inch (PPI), a luminance up to 62,947 cd/m 2 and a peak external quantum efficiency (EQE) of 10.03 %. In addition, pixel spacing layers were introduced to further suppress electrical crosstalk and unwanted light emission, and the redundant part of emissive layers enabled QDs to be embedded into pixel spacing layers readily. The resulting full-color QLEDs with independent pixels exhibited a same high resolution of 6350 PPI, with a luminance of 35,427 cd/m 2 and a peak EQE of 8.55 %. Our work represents the best performance of full-color QLEDs with both high efficiency and high resolution, which demonstrates great potential in the application of future near-eye displays.
研究领域:
材料科学
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高影响因子
Advanced Optical Materials
·
2021
·Vol. 9
·期 21
·2100814
·
IF 9.926
Kaimin Du,Manli Zhang,Yao Li,Huwei Li,Kai Liu,Chengyu Li,Jing Feng,Hongjie Zhang
Advanced fluorescent anticounterfeiting technology has attracted widespread attention and encourages people to develop reliable luminescent materials with multiple colors and tunable luminescence. Here, novel nanocomposites composed of perovskite quantum dots (PeQDs) and upconversion nanoparticles (UCNPs) are successfully designed and served as efficient anticounterfeiting inks. NaYF 4 :Yb/Tm@NaYF 4 :Yb core–shell UCNPs are formed first and then ultrasmall CsPbX 3 (X = Cl, Br, and I or mixed halide systems Cl/Br and Br/I) PeQDs linked on the surface of UCNPs by seeded-growth strategy. UCNPs-CsPbX 3 nanocomposites can not only provide multicolor downconversion luminescence (DCL) under ultraviolet (UV) excitation, but also produce tunable upconversion luminescence (UCL) under 980 nm continuous-wave laser excitation. Finally, UCX 3 nanocomposites are mixed with prepolystyrene (PS) and the resulting UCX 3 /PS with excellent water stability and photostability can be employed as multicolor fluorescent ink for both writing and printing. These findings not only present a general method to fabricate novel nanocomposites combining both advantages of UCNPs and PeQDs, but also provide insight for the practical application in the field of anticounterfeiting.
研究领域:
材料科学
·
光学
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DOI
高影响因子
ACS Applied Polymer Materials
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2025
·
IF 4.7
Boying Wang,Jin Liu,Wenfei Shen,Yao Wang,Jun Li,Yan Zhang,Qiao Wang,Christopher D. Snow,Matt J. Kipper,Soo Wohn Lee,Laurence A. Belfiore,Jianguo Tang
Facing the significant challenges of information security, this work proposes an information encoding system based on the fluorescence properties of metal-ion-induced polystyrene-block-poly(acrylic acid) (PS–PAA) nanoaggregates (MIPAs), in which Eu3+, Tb3+, and Al3+ ions are embedded. By adding poly(vinylpyrrolidone) (PVP), red, green, and blue primary color inks are obtained. By precisely adjusting the ratio of cations, the control of photoluminescence (PL) intensity at different emission wavelengths is achieved, thereby obtaining a full-color fluorescent ink. Under the potential driving force in the nozzle of an electrofluidic inkjet printer, the ink can be printed onto a paper substrate and exhibit multiple fluorescent colors under ultraviolet (UV) irradiation. The printed fine image structures can carry encoded data. In these images, the multiple emission modes of fluorescent nanoaggregates induced by metal ions (Eu3+, Tb3+, and Al3+) can be combined with multiple quenching mechanisms. This will hopefully further improve the security of encoded information and the efficiency of information retrieval.
研究领域:
材料科学
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光学
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信息安全
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DOI
高影响因子
危险品化学品经营许可证（带存储）