Advanced Optical Materials
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2025
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IF 7.2
Xiulan Shui,Shuangqiang Fang,BenLe Dou,Tianchun Lang,Haoliang Cheng,Jiaqi Ou,Zhou Zhou,Xuan Liu,Le Wang
Development of efficient sunlight conversion materials is critical for advancing sustainable agricultural practices, but current solutions often face challenges such as poor stability, high cost, and reliance on rare-earth elements. This study presents a rare-earth-free xCsMnCl 3 (H 2 O) 2 /(1−x)Cs 3 SbCl 6 heterojunction ( x = 1−0.65) synthesized via an eco-friendly mechanochemical method. By strategically combining Cs 3 SbCl 6 as a UV-absorbing donor with CsMnCl 3 (H 2 O) 2 as an efficient red emitter. The optimized heterojunction achieves a remarkable 36-fold enhancement at 626 nm (Full width at half maxima (FWHM) = 88 nm), perfectly matching chlorophyll a's absorption spectrum. Comprehensive experimental and theoretical analyses, including UV–vis absorption, photoluminescence (PL) spectroscopy, and density functional theory (DFT) calculations, reveal a dual enhancement mechanism: i) efficient interfacial electron-hole transfer and ii) suppression of non-radiative recombination through defect passivation. The practical application is demonstrated through a sunlight conversion film fabricated by embedding the 0.75CsMnCl 3 (H 2 O) 2 /0.25Cs 3 SbCl 6 composite in Ecoflex-0030, which exhibits exceptional environmental stability (90% PL retention after 90 days) and mechanical durability (500% tensile strain). The plant growth experiments confirm the film's agricultural efficacy, with chives and green cabbage growth rates increasing by 1.5- and 1.3-fold, respectively, compared to natural light conditions. This work not only addresses the limitations of existing light-conversion materials but also establishes a rare-earth-free, eco-friendly platform for energy-efficient agriculture.
研究领域:
材料科学
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农业科学
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环境科学
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产品关联
DOI
高影响因子
ACS Applied Energy Materials
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2025
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IF 5.5
Yin Zhu,Jiupai Ni,Chengsheng Ni
Cu doping in ferrite perovskites was reported to enhance the low-temperature performance for the oxygen reduction reaction (ORR) of a protonic solid oxide fuel cell (H-SOFC). Zr4+ as a donor for doping in rare-earth-element-free BaFe0.9–xCu0.1ZrxO3−δ (x = 0, 0.05, and 0.1) was studied to achieve a trade-off between the high-performance electrocatalysis and stability of the Cu-containing perovskite. Zr4+ stabilized the cubic structure of the perovskite and inhibited the formation of hexagonal BaFeO3 by decreasing the Goldschmidt tolerance factor of the perovskite. Compared with BaFe0.9Cu0.1O3−δ (Zr0), BaFe0.85Cu0.1Zr0.05O3−δ (Zr5) and BaFe0.8Cu0.1Zr0.1O3−δ (Zr10) exhibit higher electric conductivity and surface exchange kinetics but a lower thermal expansion coefficient. At 600 °C, the cell with Zr10 exhibits a peak power of 547.73 mW cm–2, a polarization resistance of 0.03 Ω cm2, and a chronoamperometry of 673.13 mA cm–2 at 0.6 V after 140 h. Therefore, Zr4+ doping in the ferrite cathode can improve the ORR kinetics and durability of low-temperature H-SOFCs.
研究领域:
材料科学
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能源科学
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电化学
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产品关联
DOI
高影响因子
Journal of Materiomics
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2021
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IF 6.425
Di Peng,Shengan He,Yuyan Zhang,Liqin Yao,Wendong Nie,Zhijian Liao,Wenting Cai,Xinyu Ye
The demand for in-situ detection of latent fingerprints (LFPs) in ways of high sensitivity, high selectivity, high contrast, low cost and user-friendly is still urgent. To overcome this challenge, a moisture-stable, red-emitting fluoride phosphor K 3 AlF 6 :Mn 4+ (KAF:Mn 4+ ) with an organic hydrophobic skin was prepared. The phosphor has a uniform and superfine morphology with excellent luminescence properties. More importantly, this non-ultraviolet (UV) or non-near infrared (NIR) induced phosphor was proved to be an ideal fluorescent label for LFP imaging, which is both friendly for touch DNA analysis and compatible to forensic light sources. The well-defined ridge details with little background interference on various surfaces were presented by the oleic acid (OA) modified KAF:Mn 4+ (KAF:Mn 4+ -OA) phosphor in few seconds using the powder dusting method. To confirm the high selectivity of KAF:Mn 4+ -OA for LFP imaging, an efficient quantitative evaluation method is proposed with the aid of ImageJ & Origin software. Due to the superiority of the Mn 4+ -doped fluoride for the rapid imaging of LFPs in terms of low-cost, high compatibility and good availability, it is expected to be a promising candidate for forensic science as well as fluorescence imaging in other fields instead of rare earth luminescent materials.
研究领域:
法医学
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材料科学
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光学成像
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Xiao-Fei Wang,Gui-Gen Wang,Jia-Bing Li,Zheng Liu,You-Xiao Chen,Long-Fei Liu,Jie-Cai Han
Herein we first report new chlorine-doped graphene quantum dots (Cl-GQDs) that can be used in solid-state white-light-emitting diodes (WLEDs). The Cl-GQDs with a mean size of 1.53 nm are obtained by one-step hydrothermal method using β-cyclodextrin and hydrochloric acid as the source materials. The PL emission spectra of the Cl-GQDs show an excitation-wavelength-dependent behavior in the range from 300 to 380 nm excitation. Under UV irradiation, the Cl-GQDs can direct emit white light. Given that they are worth using in light-conversion, Cl-GQDs embedded solid composite film (Cl-ESCF), based on silicon resin as host material, is successfully fabricated by solution-processing approach. The freestanding Cl-ESCF has high transparency and flexibility, excellent photostability and temperature resistance, and retains its optical properties in the solid state. In order to realize its potential, the Cl-ESCF converted remote UV-pumped WLED is demonstrated. The results verify that the Cl-GQDs can be homogeneously dispersed within solid matrix without obvious aggregation so that a uniform and defect-free natural white light can be obtained. In addition, our WLED possesses favorable white-light characters with the CIE of (0.33, 0.34), moderate CCT of 5653 K, and high CRI of 87.6, as well as good color and LED stability. This single-phase rare-earth-free white-luminescent Cl-GQDs may be not only expected to prevent the drawbacks of multicolor phosphors, thereby generating high-quality white emission, but also identified to be a green alternative for conventional emitters.
研究领域:
材料科学
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纳米技术
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光电
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光子学
✓ 已验证
产品关联
DOI
高影响因子
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