Advanced Optical Materials
·
2022
·Vol. 10
·期 9
·2102496
·
IF 10.05
Huanxin Yang,Weiren Zhao,Enhai Song,Kaige Hu,Hongshi Zhang,Rui Yun,Hao Huang,Jiyou Zhong,Yang Li,Xiyan Li
Persistent phosphor, as an eco-friendly energy storage material, usually needs high-energy photonic rays in the storage process, such as ultraviolet (UV) light, X-ray, or even γ-ray. This strict requirement for light source which is harmful to human health greatly limits the popularity of persistent phosphors in the daily life. Here, a novel broadband orange persistent emissive phosphor LiGaO 2 :1%Mn 2+ (LGOM) is reported which supports efficient wide band excitation from UV to green light. The afterglow excited by 470 nm light even reaches ≈80% as intensity as UV excitation. The afterglow of LGOM excited by common blue lamp (450–460 nm) can be pictured by the smart phones for more than 48 h. The mechanism of visible light storage is discussed through the thermal-luminescence measurements. In addition, interestingly, its persistent emissive color can shift from orange-yellow to orange-red after ceasing the excitation source. This unique broadband orange afterglow phosphor which supports efficient wide range visible-light excitation, afterglow color shift, and long-lasting luminescence is expected to have potential applications in the fields of emergency direction, anticounterfeiting, decoration design, etc.
研究领域:
材料科学
·
光子学
·
发光材料
·
能量存储
·
固态化学
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DOI
高影响因子
ATMOSPHERIC ENVIRONMENT
·
2024
·
IF 4.2
Chunyan Zhang,Qingxin Ma,Peng Zhang,Tianzeng Chen,Yonghong Wang,Biwu Chu,Hao Li,Jikun Li,Chuncheng Chen,Jincai Zhao,Hong He
As the main source of atmospheric sulfate aerosol , the aqueous-phase oxidation of SO 2 has been of great concern. Traditionally, the aqueous-phase oxidation of SO 2 is considered a consumption process of atmospheric oxidation capacity; however, we report here that •OH radicals and other reactive oxygen species (ROS) can be generated in the photochemical reactions of bulk HSO 3 − solution. This •OH production pathway results in the fast sulfate formation in the photooxidation of dissolved SO 2 . The photochemical process is determined to be pH-dependent in which sulfate formation is promoted by decreasing pH. Hence, a light - driven acidic positive feedback mechanism is proposed that the oxidation of dissolved SO 2 and the formation of •OH radicals have a synergistic promoting effect. These results indicate that the photochemistry of dissolved SO 2 could be a missing source of aqueous •OH radicals as well as sulfate at regional to global scales.
研究领域:
大气科学
·
环境化学
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DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Chenglong Wang,Fan Meng,Luyang Qiao,Yuyan Xie,Xin Liu,Jinhuan Zheng
A self-lubricating hydrogel filament was achieved by establishing an in situ photocuring system and using camphorquinone/diphenyl iodonium hexafluorophosphate (CQ/DPI) as the blue-light photoinitiators, acrylamide (AM) and N,N-dimethylacrylamide (DMAA) as the monomers, polyethylene glycol diacrylate (PEGDA) as the cross-linker, and lecithin as the lipid lubricant. The blue-light photopolymerization efficiency and the photorheological properties of the hydrogel precursor were investigated by photodifferential scanning calorimetry and a photorheological system. With the increase of DMAA, the photopolymerization efficiency of the precursor improved, while the elasticity of poly(DMAA/AM) decreased accordingly. The physical cross-linking effect between lecithin and the poly(DMAA/AM) network led to improved polymerization properties and elasticity. The lipid-based boundary layer at the hydrogel surface endowed the self-lubrication of the hydrogel filament. The extruded hydrogel filaments exhibited excellent mechanical properties and weavability, which were expected to play a realistic role in soft robots and bioengineering.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jingcong Hu,Chenghao Bi,Xuetao Zhang,Bohai Tian,Yue Lu,Jianjun Tian,Manling Sui
With the rapid development of all-inorganic CsPbX 3 (X = I, Br, and Cl) perovskite light-emitting diodes (PeLEDs), their external quantum efficiency (EQE) has made great progress in the last few years. However, severe performance degradation at the operation condition impedes its large-scale industrial application. In this text, by using the advanced spherical aberration corrected transmission electron microscope (TEM), the degradation pathway of PeLEDs under bias loading was more systematically and comprehensively, especially from the viewpoint of its microstructural evolution pathway, which showed that iodine vacancy migration triggered the structural collapse was the primary inducement of performance decay. To solve this problem, inorganic termination ZnI 2 was employed to passivate the surface halide vacancy defects and supplement the halide ion into the lattice, which significantly improves the photoluminescence (PL) lifetime and stability of CsPbI 3 quantum dots (QDs). As expected, not only the EQE of PeLEDs has been greatly improved, but also the operating half-lifetime is enhanced by about 4 times as compared with the original one. Microstructural characterization and density functional (DFT) calculations confirm that the preferential segregation of Zn element on the surface of QDs was the principal cause to passivate the defect state of QDs, which exhibits lower formation energy and better operational stability.
研究领域:
材料科学
·
光子学
·
半导体物理
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DOI
高影响因子
Small
·
2022
·Vol. 18
·期 18
·2107145
·
IF 15.153
Jiong Li,Chenghao Duan,Qiaoyun Wen,Ligang Yuan,Shibing Zou,Chang Chen,Weiguang Xie,Dongxu Lin,Christopher C. S. Chan,Kam Sing Wong,Keyou Yan
Integrating highly efficient photovoltaic (PV) function into light-emitting diodes (LEDs) for multifunctional display is of great significance for compact low-power electronics, but it remains challenging. Herein, it is demonstrated that solution engineered perovskite nanocrystals (PNCs, ≈100 nm) enable efficient electroluminescence (EL) and PV performance within a single device through tailoring the dispersity and interface. It delivers the maximum brightness of 490 W sr −1 m −2 at 2.7 V and 23.2% EL external quantum efficiency, a record value for near-infrared perovskite LED, as well as 15.23% PV efficiency, among the highest value for nanocrystal perovskite solar cells. The PV–EL performance is well in line with the reciprocity relation. These all-solution-processed PV-LED devices open up viable routes to a variety of advanced applications, from touchless interactive screens to energy harvesting displays and data communication.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
能量收集
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DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 23
·2201718
·
IF 10.05
Sheng Wu,Puxian Xiong,Quan Liu,Yao Xiao,Yongsheng Sun,Enhai Song,Yan Chen
Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) are promising for many applications in non-destructive testing, bio-imaging, and modern agriculture. However, developing self-activated NIR phosphors with high efficiency and excellent thermal stability is a great challenge for current research. In this work, a self-activated far-red to NIR emitting NaLaMgWO 6 phosphor is prepared by the high-temperature solid-state reaction method, whose luminescence properties are investigated in detail. In addition, the introduction of Bi 3+ ions as sensitizers enhances the emission intensity of far-red to NIR light (650-850 nm) through a Bi 3+ → WO 6 6– energy transfer design strategy, resulting in an increased internal quantum efficiency (IQE) from 56.4% to 64.8% and thermal stability from 54% to 72% (420 K). Finally, the combination of NaLaMgWO 6 :Bi 3+ with 365/460 nm commercial LED chip is prepared into NIR pc-LED devices, demonstrating satisfactory performance in the field of night vision detection and other wide range of practical applications.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2021
·Vol. 83
·期 4
·751-761
·
IF 1.915
Yu Hong,Yang Xiuyun,Zhang Donghui,Guo Manran,Hou Yue,Li Leijiao,Bao Siqi
Tellurium quantum dots (Te QDs) were prepared using bulk tellurium as the precursor. Te QDs can be a highly active photocatalyst for boosting the photocatalytic degradation of rhodamine B (RhB) under visible light irradiation. The morphology and composition of Te QDs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results showed that in the presence of H 2 O 2 , the photocatalytic efficiency of Te QDs on RhB could achieve a good degradation effect within a very short time (30 min). The effects of initial dye concentration, pH value, light intensity, catalyst dosage and H 2 O 2 concentration on dye degradation were successively studied. The effects of inorganic ions (NO 3 − , Cl − , SO 4 2− , Ca 2+ , Mg 2+ and Fe 3+ ) on photocatalytic degradation were also discussed. Experimental results of free radical capture showed that OH • and O 2 •− played important roles in photocatalytic degradation. More importantly, Te QDs efficiency still remained above 85% after four cycles of use, indicating good stability, recyclability and utility. This work may inspire further design of other semiconductor QDs for highly efficient dye degradation. Te QDs was prepared by a simple method and used for the efficient degradation of RhB. OH· and O 2 •− formed in the presence of H 2 O 2 effectively contributed to the degradation of RhB. Te QDs possess good stability, commendable repeatability and high catalytic activity.
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DOI
高影响因子
Cell Reports Physical Science
·
2026
·
IF 6.9
Lan Wen,Kaijian Zhu,Xinyi Zhang,Hoi Ying Chung,Songying Qu,Hao Wu,Fatwa F. Abdi
The photoelectrochemical (PEC) glycerol oxidation reaction (GOR) provides a sustainable route to convert biomass waste into value-added chemicals, but controlling product selectivity remains a key challenge. In this study, we show that light intensity influences PEC GOR selectivity on BiVO 4 photoanodes. Increasing illumination from 5 to 100 mW/cm 2 shifts the reaction from partial oxidation products—glyceraldehyde (GLAD), glycolaldehyde (GCAD), and dihydroxyacetone (DHA)—toward the deeply oxidized product formic acid (FA). Frequency-resolved measurements, including intensity-modulated photocurrent spectroscopy and PEC impedance spectroscopy, reveal that higher light intensities enhance surface hole accumulation and interfacial charge transfer, enabling multi-electron oxidation pathways. Control experiments further elucidated the reaction mechanism, identifying GLAD as the primary precursor to FA and GCAD as a secondary intermediate that is further oxidized under higher illumination. These findings provide important insights into the selective control of the PEC GOR, offering a potential strategy for optimizing product distribution in solar-driven biomass valorization and chemical synthesis.
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产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2026
·Vol. 9
·期 3
·266
·
IF 15.5
Liu Xiaoyu,Sun Jie,Galluzzi Massimiliano,Zhong Huanqiong,Zhou Zhenfu,Chen Shiguo
Pathogenic microbes and house dust mites (HDM) are critical factors associated with severe asthma and pathogenic infections that severely threaten human health worldwide. Therefore, it is urgent to develop biocide alternatives to inactivate pathogenic microbes and HDM, and to reduce immunogenicity of HMD. Silver (Ag)/titanium dioxide (TiO 2 ) nanoparticle (ATN) exhibits a significant synergistic enhancement effect due to destructive reactive oxygen species (ROS) generation under UV irradiation, while its antimicrobial and acaricidal activities and related action mechanisms without light irradiation are still unclear. Herein, a water-dispersible ATN was prepared facilely by a photocatalytic reduction process. ATN exhibited improved antimicrobial activity due to synergistic antimicrobial effect of Ag and TiO 2 based on destructive nitric oxide (NO) generation in the absence of light. And ATN exhibited good acaricidal activity against HDM due to oxidative stress-induced mitochondrial disorder, lysosome swelling and rupture arising from NO generation. Especially, ATN can effectively reduce immunogenic Dermatophagoides farinae group 1 (Der f 1) and Dermatophagoides farinae group 2 (Der f 2). The work proposes an alternative approach to develop biocide alternatives and acaricidal materials, and it can help readers better comprehension of synergistically enhanced antimicrobial and acaricidal activities and relative action mechanisms of meta doped TiO 2 nanoparticles.
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DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Hailong Feng,Siyu Jin,Feiyang Cheng,Ming Ruan,Xiaodong Zhu,Deren Yang,Lei Wang
Current crystalline silicon (c-Si) solar cells typically employ pyramidal texturing and a silicon nitride (SiNx) film to suppress light reflection and improve the power conversion efficiency (PCE). However, appreciable reflection persists at both short and long wavelengths, indicating that further optical optimization is possible. Here, we introduce a boehmite nanosheet layer onto c-Si solar cells by leveraging the refractive index mismatch at the SiNx/air interface. Together with the pyramidal texture, the nanosheets form a micronano-composite structure with a graded refractive index. This architecture reduces the weighted-average reflectivity (300–1100 nm) from 4.66% to 3.80%, increases the short-circuit current density by 0.26 mA cm–2, and improves the PCE by 0.18%. The method provides a low-cost route to add an auxiliary antireflection layer to existing c-Si architectures, enhancing both short- and long-wavelength responses and potentially extending to other solar-cell technologies.
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产品关联
DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Qin Fanglu,Liu Haiyang,Yang Aosai,Liu Yilin,Wang Xuanji,Sun Yue,Zhou Xinyi,Sofer Zdenek,Zhou Jiayuan,Liu Xue,Liu Sheng,Zhang Vanessa Li,Liu Xiaoze,Gao Weibo,Yu Ting
Emerging two-dimensional magnetic semiconductors represent transformative platforms to explore magneto-optics and opto-spintronic applications. Though two-dimensional opto-spintronics has attracted tremendous research efforts in spin-dependent photodetectors and non-volatile memory components, the realization of one core application - spin-modulated light-emitting device - remains elusive so far. Here, we successfully realize prototype spin-modulated light-emitting device integrated with a two-dimensional semiconducting magnet chromium sulfide bromide, demonstrating considerable electroluminescence down to bilayers. Intriguingly, it's discovered to be directly manipulated by spin-flip and spin-canting transitions. Notably, the intrinsic carrier-tunable interlayer magnetic coupling in chromium sulfide bromide enables electroluminescence to actively amplify magnetic hysteresis (via spin-flip) and continuously tune magnetic order (via spin-canting) with robust anisotropy, establishing a connection between carrier injection, magnetic phase transitions, and optical emission. The prototype demonstration of spin-modulated light-emitting device establishes an indispensable scheme of opto-spintronic devices leveraging two-dimensional spin transitions and strong excitonic effects, presenting a critical step towards integrated two-dimensional opto-spintronics.
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DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Panyi Xi,Feng Wang,Shengdan Xie,Pengpeng Wang,Shaodong Zhang,Xichong Ye,Goran Ungar,Feng Liu
Achieving efficient and comprehensive control over all parameters of circularly polarized light (CPL) remains a significant challenge in advanced optical applications, including information encryption, optical communication, quantum computing, etc. Conventional CPL materials typically combine luminescence and chirality in a single component for direct CPL emission or rely on intrinsically chiral components to optically filter unpolarized light. However, these strategies limit design flexibility and hinder efficient tunability. This study addresses these limitations by introducing a structurally decoupled approach to CPL production. The proposed multilayer composite system, composed entirely of achiral components, decouples chirality from luminescence and intrinsic structural elements. Specifically, achiral fluorescent films are integrated with twist-stacked plasmonic polymer nanocomposite layers, achieving a high dissymmetry factor of 0.3 in the visible region. This innovative design allows independent control over CPL parameters, including wavelength, ellipticity, and handedness, through mechanical rotation or deformation. The decoupled architecture significantly enhances the material's design flexibility, scalability, and environmental stability. Furthermore, the resulting dynamic CPL material demonstrates practical applications in multi-level, high-capacity information encryption, offering promising prospects for advanced optical technologies.
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DOI
高影响因子
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