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学者姓名：张新平
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Abstract ：
Filling the cyan gap (470-500 nm) in white light-emitting diodes (WLEDs) is crucial for full-spectrum illumination. However, the traditional approach of adding cyan phosphor to red, green, and blue phosphors can lead to reabsorption and color aberrations due to spectral overlap and varying degradation rates among the mixed phosphors. Herein, a blue-cyan-emitting phosphor (lambda(em) = 475 nm) is developed through Si4+-P5+ heterovalent substitution in blue-violet-emitting Rb3Y(PO4)(2):Eu2+ phosphor (lambda(em) = 425 nm), which can serve as the blue component in WLEDs to fill the cyan gap without adding extra phosphor. Initially, Eu2+ primarily occupy the Rb2O(12) sites (426 nm) in Rb3Y(PO4)(2):Eu2+, with minimal occupation in the Rb1O(7) sites (456 nm) and YO6 sites (522 nm). The Si4+-P5+ substitution results in a red-shift of the Eu2+@Rb1 emission peak from 456 to 475 nm and the preferred occupation of the Rb1 sites by Eu2+, synergistically achieving the blue-cyan luminescence. Employing the blue-cyan-emitting phosphor instead of the blue-violet-emitting phosphor in WLEDs significantly improves the color rendering index from 90 to 97.2, thus enhancing the overall color reproduction quality. This research demonstrates a facile composition modification method to modulate the properties of inorganic luminescent materials and provides an alternative solution for full-spectrum healthy lighting.
Keyword ：
Eu2+ luminescence Eu2+ luminescence heterovalent substitution heterovalent substitution full-spectrum healthy lighting full-spectrum healthy lighting cyan gap cyan gap phosphor phosphor
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| GB/T 7714 | Ge, Yeping , Zhao, Ming , Zhao, Yifei et al. Tailoring of Blue-Cyan Luminescence in Rb3Y[(P1-xSix)O4]2:Eu2+ Phosphor via Si4+-P5+ Heterovalent Substitution for Full-Spectrum Healthy Lighting [J]. | LASER & PHOTONICS REVIEWS , 2025 . |
| MLA | Ge, Yeping et al. "Tailoring of Blue-Cyan Luminescence in Rb3Y[(P1-xSix)O4]2:Eu2+ Phosphor via Si4+-P5+ Heterovalent Substitution for Full-Spectrum Healthy Lighting" . | LASER & PHOTONICS REVIEWS (2025) . |
| APA | Ge, Yeping , Zhao, Ming , Zhao, Yifei , Zhang, Xinping . Tailoring of Blue-Cyan Luminescence in Rb3Y[(P1-xSix)O4]2:Eu2+ Phosphor via Si4+-P5+ Heterovalent Substitution for Full-Spectrum Healthy Lighting . | LASER & PHOTONICS REVIEWS , 2025 . |
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Abstract ：
We report a line excitation scheme for surface enhanced Raman scattering (SERS) using a graphene substrate deposited with silver nanoparticles (AgNPs). Direct laser writing was employed for producing laser-induced graphene (LIG) layer on polyimide and electrochemical reaction was used to grow AgNPs onto the surface of LIG. In addition to the local-field enhancement on the plasmonic hotspots, the graphene-based charge-transfer and molecular adsorption properties make further contributions to the SERS mechanisms. Compared with conventional point excitation, the line excitation scheme allows much extended dynamic range of the excitation laser power before reaching the damage threshold of the target molecules, much enhanced Raman signal due to the integration over the focusing line, and high reliability/repeatability of the SERS signals. This also reduces significantly the sensitivity of the SERS signals to the randomly distributed nanostructures. Thus, much enlarged excitation area/volume for Raman interactions enables high stability of the signals with multiplied intensity through integration over the focusing line, as compared with point excitation scheme under the same excitation power density. The line excitation scheme shows a detection limit of 100 ppb in tracing melamine in water, attaining an enhancement factor of larger than 100, as compared with point excitation.
Keyword ：
Surface-enhanced Raman scattering Surface-enhanced Raman scattering Line excitation Line excitation Point excitation Point excitation Electrochemical deposition Electrochemical deposition Laser induced graphene Laser induced graphene Melamine detection Melamine detection
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| GB/T 7714 | Li, Jiajun , Mu, Yunyun , Tao, Guanwei et al. Line excitation SERS spectroscopy using laser-induced graphene coated with silver nanoparticles [J]. | SENSORS AND ACTUATORS B-CHEMICAL , 2025 , 430 . |
| MLA | Li, Jiajun et al. "Line excitation SERS spectroscopy using laser-induced graphene coated with silver nanoparticles" . | SENSORS AND ACTUATORS B-CHEMICAL 430 (2025) . |
| APA | Li, Jiajun , Mu, Yunyun , Tao, Guanwei , Zhang, Xinping . Line excitation SERS spectroscopy using laser-induced graphene coated with silver nanoparticles . | SENSORS AND ACTUATORS B-CHEMICAL , 2025 , 430 . |
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Abstract ：
Metal halide perovskite nanocrystals are known for their impressive photoelectric properties. However, their inferior stability and tendency to agglomerate in solution jeopardized perovskite nanocrystal application. To mitigate this issue, a method is developed for filling perovskite precursor into mesoporous silica (MS) films with subsequent thermal sintering to form nanocrystals in a ceramic matrix. The perovskite precursor vapor state was utilized instead of a liquid state or solid one, allowing maximum diffusion ratio into vertically aligned numerous ultrasmall nanopores (approximate to 4 nm) in MS during the thermal sintering process. Then, the annealing step enables the pore to collapse to encapsulate as-grown perovskite nanocrystal simultaneously. This collapse of the mesoporous structure ensures that the perovskite can be sealed to mitigate the degradation from moisture and oxygen. As a result, a less discernible photoluminescence degradation was observed when the perovskite-MS thin film is soaked in water. Furthermore, these films demonstrate distinguished thermal stability, benefiting from their unique structure of inorganic silica anchored onto perovskite surfaces. An amplified spontaneous emission signal is monitored in the vertically aligned MS-coated perovskite film. The encapsulated strategy provides ultrastable and highly emissive perovskite film that fits the technological requirements of potential laser application.
Keyword ：
amplified spontaneous emission amplified spontaneous emission encapsulation encapsulation mesoporous silica mesoporous silica perovskite nanocrystal perovskite nanocrystal photoluminescence photoluminescence
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| GB/T 7714 | Li, Ya , Li, Yawen , Zhou, Jungui et al. Ultrastable Perovskite Nanocrystal with Amplified Spontaneous Emission via Confined in Vertically Aligned Mesoporous Silica [J]. | PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS , 2025 . |
| MLA | Li, Ya et al. "Ultrastable Perovskite Nanocrystal with Amplified Spontaneous Emission via Confined in Vertically Aligned Mesoporous Silica" . | PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS (2025) . |
| APA | Li, Ya , Li, Yawen , Zhou, Jungui , Zhang, Qin , Pan, Baojun , Wu, Jialing et al. Ultrastable Perovskite Nanocrystal with Amplified Spontaneous Emission via Confined in Vertically Aligned Mesoporous Silica . | PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS , 2025 . |
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Abstract ：
Nonlinear optics, a critical branch of modern optics, presents unique potential in the study of two-dimensional (2D) magnetic materials. These materials, characterized by their ultra-thin geometry, long-range magnetic order, and diverse electronic properties, serve as an exceptional platform for exploring nonlinear optical effects. Under strong light fields, 2D magnetic materials exhibit significant nonlinear optical responses, enabling advancements in novel optoelectronic devices. This paper outlines the principles of nonlinear optics and the magnetic structures of 2D materials, reviews recent progress in nonlinear optical studies, including magnetic structure detection and nonlinear optical imaging, and highlights their role in probing magnetic properties by combining second harmonic generation (SHG) and multispectral integration. Finally, we discuss the prospects and challenges for applying nonlinear optics to 2D magnetic materials, emphasizing their potential in next-generation photonic and spintronic devices.
Keyword ：
magnetic order magnetic order two-dimensional magnetic materials two-dimensional magnetic materials SHG SHG
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| GB/T 7714 | Xin, Ziqian , Xue, Bingyuan , Chang, Wenbo et al. Nonlinear Optics in Two-Dimensional Magnetic Materials: Advancements and Opportunities [J]. | NANOMATERIALS , 2025 , 15 (1) . |
| MLA | Xin, Ziqian et al. "Nonlinear Optics in Two-Dimensional Magnetic Materials: Advancements and Opportunities" . | NANOMATERIALS 15 . 1 (2025) . |
| APA | Xin, Ziqian , Xue, Bingyuan , Chang, Wenbo , Zhang, Xinping , Shi, Jia . Nonlinear Optics in Two-Dimensional Magnetic Materials: Advancements and Opportunities . | NANOMATERIALS , 2025 , 15 (1) . |
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Abstract ：
We report efficient generation of ultrashort laser pulses in the deep ultraviolet (DUV) from a quasi-phase-matched (QPM) optical parametric oscillator (OPO) based on a periodically poled KTP (PPKTP) crystal. Up-conversion through frequency-doubling of the signal pulses (2 omega S) and sum-frequency generation between the pump and signal pulses (omega P + omega S) produces femtosecond pulses in the green and in the blue, respectively. A third-order QPM is responsible for the green-pulse generation and a fifth-order QPM for the blue. The cavity mirrors have two high-reflection bands, which support the oscillation of the OPO signal (omega S) in the near infrared and the sum-frequency generation of omega P + omega S in the blue, respectively. The interaction between the blue and green pulses enables further cascading by a sum-frequency generation process, producing the DUV pulses. Cavity-length detuning facilitates the large tuning range of the DUV generation.
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| GB/T 7714 | Xue, Yiqun , Zhang, Xinping . Deep UV generation in a femtosecond optical parametric oscillator through multistage cascading [J]. | APPLIED PHYSICS B-LASERS AND OPTICS , 2025 , 131 (1) . |
| MLA | Xue, Yiqun et al. "Deep UV generation in a femtosecond optical parametric oscillator through multistage cascading" . | APPLIED PHYSICS B-LASERS AND OPTICS 131 . 1 (2025) . |
| APA | Xue, Yiqun , Zhang, Xinping . Deep UV generation in a femtosecond optical parametric oscillator through multistage cascading . | APPLIED PHYSICS B-LASERS AND OPTICS , 2025 , 131 (1) . |
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Abstract ：
Solution-processed plastic semiconductors have garnered significant attention recently due to their ease fabrication and diverse optoelectronic functionalities, positioning them as promising contenders for the next generation of semiconductors. However, comprehending the molecular ordering in polymer semiconductor blends during solution processing remains a captivating challenge. In this study, we chose poly(3-hexylthiophene-2,5-diyl) (P3HT) and poly(3-hexylselenophene-2,5-diyl) (P3HS) blends as the model system and examined the molecular ordering of blends with low molecular weights (below the entanglement) and high molecular weights (above the entanglement). By employing a combination of structural analysis, spectroscopic techniques, and theoretical modeling, valuable insight regarding the arrangement of molecules in three dimensions within P3HT/P3HS blends of varying molecular weights have been acquired. Through these analyses, we establish a comprehensive relationship between molecular weight, molecular ordering, and exciton coherence in polymer-polymer blends.
Keyword ：
molecularweight molecularweight Franck-Condon model Franck-Condon model excitoncoherence excitoncoherence molecular arrangement molecular arrangement grazing-incidencewide-angle X-ray scattering grazing-incidencewide-angle X-ray scattering
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| GB/T 7714 | Dou, Fei , Ren, Yongli , Yu, Liyang et al. Quantifying the Three-Dimensional Molecular Arrangement in Polymer-Polymer Blends: Impact of Molecular Weight [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (5) : 2986-2996 . |
| MLA | Dou, Fei et al. "Quantifying the Three-Dimensional Molecular Arrangement in Polymer-Polymer Blends: Impact of Molecular Weight" . | ACS APPLIED POLYMER MATERIALS 7 . 5 (2025) : 2986-2996 . |
| APA | Dou, Fei , Ren, Yongli , Yu, Liyang , Xu, Bo , Dyson, Matthew , Martin, Jaime et al. Quantifying the Three-Dimensional Molecular Arrangement in Polymer-Polymer Blends: Impact of Molecular Weight . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (5) , 2986-2996 . |
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Abstract ：
Phase control of random lasing processes has been a challenge both in physics and in the device/materials design. Although conventional saturable absorbers can be integrated with random lasers to conceive mode-locking scheme, low intensity and random directions of the lasing radiation reduce largely the possibility. In such considerations, we put forth a new mode-locking mechanism, which is defined as cascaded absorption and stimulated emission (CASE), and have it achieved in multicrystalline microdisk structures of a hybrid perovskite. This scheme applies only to lasing materials with strong overlap between the absorption and emission spectra. In this work, we employed 2-photon pumping at 800 nm with a pulse duration of about 150 fs to realize phase-locked random lasing in MAPbBr3 microdisks in donut shapes, which are produced by micro-imprinting using a flexibly transferred template of tricyclo[5.2.1.02,6] decanedimethanol diacrylate. The phase-locking performance is identified by the narrow-band lasing lines with equal separations. The constant phase shift for initializing phase locking is determined by the internal conversion lifetime in the MAPbBr3 molecules. Two-photon pumping enables large penetration depth into the microdisks and consequently large numbers of phase-locked lasing modes, producing much narrowed and high-contrasted spectral lines. Lasing lines with a bandwidth as narrow as 0.26 to 0.3 nm and an equal separation ranging from 1.7 to 4.8 nm have been achieved for different microdisk schemes. These results imply marked progress in new random lasing physics and potential applications in ultrafast laser technology.
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| GB/T 7714 | Zhang, Qin , Liu, Yue , Zhang, Yi et al. Two-Photon Pumped Phase Locking of Random Lasers in Hybrid Perovskite Multi-Crystalline Microdisks [J]. | ULTRAFAST SCIENCE , 2024 , 4 . |
| MLA | Zhang, Qin et al. "Two-Photon Pumped Phase Locking of Random Lasers in Hybrid Perovskite Multi-Crystalline Microdisks" . | ULTRAFAST SCIENCE 4 (2024) . |
| APA | Zhang, Qin , Liu, Yue , Zhang, Yi , Zhang, Yuxin , Guo, Jinxin , Zhang, Yiwei et al. Two-Photon Pumped Phase Locking of Random Lasers in Hybrid Perovskite Multi-Crystalline Microdisks . | ULTRAFAST SCIENCE , 2024 , 4 . |
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Abstract ：
We report a thin-film optical amplifier integrated on a fiber facet based on polymer-coated distributed feedback (DFB) microcavities, which are fabricated on a planar substrate and then transferred onto fiber tips by means of a flexible transfer technique. The amplified light directly couples into the fiber and is detected when coupled out at the other end after propagating along the fiber for about 20 cm. A prominently amplification factor of about 4.33 at 578.57 nm is achieved by sending supercontinuum pulses into the hundreds of micrometers' DFB microcavities along the normal direction, which is also the axis direction of the fiber. The random distortions of grating lines generated during the transfer process result in a larger amplification spectral range and a less strict polarization dependence for injected light. Benefitting from the device size of hundreds of micrometers and the ease of integration, polymer amplifiers based on DFB microcavities demonstrate significant application potentials in optical communication systems and miniaturized optical devices.
Keyword ：
thin-film amplifier thin-film amplifier optical microcavity optical microcavity distributed feedback distributed feedback fiber fiber polymer polymer
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| GB/T 7714 | Wang, Meng , Xu, Zhuangzhuang , Ren, Yaqi et al. An Organic Microcavity Laser Amplifier Integrated on the End Facet of an Optical Fiber [J]. | NANOMATERIALS , 2024 , 14 (15) . |
| MLA | Wang, Meng et al. "An Organic Microcavity Laser Amplifier Integrated on the End Facet of an Optical Fiber" . | NANOMATERIALS 14 . 15 (2024) . |
| APA | Wang, Meng , Xu, Zhuangzhuang , Ren, Yaqi , Bai, Xiaolei , Zhang, Xinping . An Organic Microcavity Laser Amplifier Integrated on the End Facet of an Optical Fiber . | NANOMATERIALS , 2024 , 14 (15) . |
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Abstract ：
Perovskite semiconductors have achieved great success during the last decades in the application of solar cells, light-emitting diodes, and photodiodes. Developing strategies to pattern perovskites with high-resolution is crucial to broaden the application scenarios of perovskite displays and on-chip lighting. However, the widely used lithography procedure has the problem of high-cost and complexity. In this study, we demonstrate a method to pattern a luminescent perovskite-acrylic polymer composite that is prepared by direct injection at room temperature. This strategy uses standard photoresists and UV lithography at room temperature, and then the pattern in the photoresists can be easily transferred to the perovskite-acrylic polymer composite. Finally, we can obtain high-quality micron-scale features. Furthermore, we demonstrate the universality of this strategy by adapting perovskite with different color emissions into the composite and patterning it using the same procedure. Another advantage of this patternable perovskite-acrylic polymer composite is its superb water-repellent properties, which are believed to be of great potential in underwater applications. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.
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| GB/T 7714 | Guo, Jinxin , Wang, Jing , Chen, Shuang et al. Patterning luminescent and stable perovskite-acrylic polymer composites via a convenient strategy [J]. | APL MATERIALS , 2024 , 12 (7) . |
| MLA | Guo, Jinxin et al. "Patterning luminescent and stable perovskite-acrylic polymer composites via a convenient strategy" . | APL MATERIALS 12 . 7 (2024) . |
| APA | Guo, Jinxin , Wang, Jing , Chen, Shuang , Tong, Peige , Liu, Yifei , Zhang, Yiwei et al. Patterning luminescent and stable perovskite-acrylic polymer composites via a convenient strategy . | APL MATERIALS , 2024 , 12 (7) . |
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Abstract ：
The Brust-Schiffrin two-phase method is a facile way to prepare thiolate-protected metal nanoparticles, but its mechanism remains controversial. In this work, we demonstrate the use of the Brust-Schiffrin method based on coordination compound theory. We confirmed that the formation of stable complexes is the driving force for a series chemical reaction in the organic phase. We found that the stable Cu(I)-thiolate complex decreased the half-cell reduction potential of Cu(I)/Cu(0). Thus, when thiol ligands were in excess, thiolate-protected Cu(I) clusters formed rather than Cu(0)-cored nanoparticles. The thiolate-protected metal-hydride nanoclusters were the intermediate between the metal complexes and nanoparticles. The "metallophilic" interactions of the d(10) closed-shell electronic configuration of the metal coordination centers were proposed as the driving force for nanocluster and nanoparticle formation. To confirm this mechanism, we synthesized Au, Ag, and Cu monometallic nanoparticles and bi- and trimetallic nanoparticles. We found that although thiolate-protected Cu(I) nanoclusters are not easily reduced, they can combine with Au and/or Ag nanoclusters to form nanoparticles. The proposed mechanism is expected to provide deeper insight into the Brust-Schiffrin method and further extend its application to metals other than Au, Ag and Cu.
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| GB/T 7714 | Liu, Hongmei , Li, Yuting , Li, Tian et al. Mono-, di- and trimetallic coinage nanoparticles prepared via the Brust-Schiffrin method [J]. | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2024 , 26 (25) : 17760-17768 . |
| MLA | Liu, Hongmei et al. "Mono-, di- and trimetallic coinage nanoparticles prepared via the Brust-Schiffrin method" . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS 26 . 25 (2024) : 17760-17768 . |
| APA | Liu, Hongmei , Li, Yuting , Li, Tian , Mu, Yunyun , Fang, Xiaohui , Zhang, Xinping . Mono-, di- and trimetallic coinage nanoparticles prepared via the Brust-Schiffrin method . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2024 , 26 (25) , 17760-17768 . |
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