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Green N1 Additive Modified Perovskite Precursor Enables Effective Manufacturing of Large-Area Solar Cell Modules with High Efficiency and Stability

SSRN

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SSRN 2023年

作者： Zang, Yue Shao, Tianxiang Jiao, Chuanjia Zhou, Peng Li, Wangnan Cheng, Jiahao Yang, Gaoyuan Tu, Yibo Ye, Jingchuan Li, Guodong Chu, Liang Lu, Shaojian Liang, Guijie Liang, Ying Wang, Jingyang Zhong, Zhicheng Hu, Run Yan, Wensheng Institute of Carbon Neutrality and New Energy School of Electronics and Information Hangzhou Dianzi University Hangzhou310018 China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science Xiangyang441053 China Hubei Longzhong laboratory Xiangyang441000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Hubei Institute of Aerospace Chemotechnology Xiangyang441003 China School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan430074 China

Perovskite solar cells (PSCs) have been continuously breaking the solar photoelectric power conversion efficiency (PCE) record, while two long-standing challenges remain formidable on the practical commercialization path of PSCs, i.e. effective large-area manufacturing and high device operational stability. Here, we report a green additive of N-methyl-2-piperidone (N1) to modify the perovskite precursor, enabling the one-step mass manufacturing of high-quality large-area perovskite films with enhanced PCE and operational stability. The results show that due to the stronger complexation ability of N1 additive with PbI2, the generated PbI2-N1 complex can effectively prevent the preferential nucleation and realize lead halide-framework template-assistant crystallization reaction with organic cation in the one-step solution preparation of perovskite (FAPbI3)0.95(MAPbBr3)0.05 thin films, which result in the uniform grain size and smooth, dense film quality. Therefore, the PSCs device with small active area of 0.09 cm2 exhibits an efficiency of 22.2%, which is further improved to 23.2% by passivating the perovskite interface using PEAI. Moreover, highly-efficient slot-die printed 5×5 cm2 PSC module has been obtained with a champion PCE of 21% and improved operational stability over 1000 h. This work demonstrated a new strategy to realize high-quality large-scale perovskite films for solution-processed PSC modules, and may be further improved and extended to other kinds of PSCs and perovskite light-emitting diodes and detectors. © 2023, The Authors. All rights reserved.

关键词： Nucleation

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The influence of cooling rates on strain phase diagrams and domain structures of ferroelectric thin films: A case study of PbTiO3

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Acta Materialia 2025年 296卷

作者： Zhou, Meng-Jun Zhang, Peng Wang, Bo Yi, Di Nan, Ce-Wen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Materials Science Division Lawrence Livermore National Laboratory Livermore 94550 CA United States School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China

Strain engineering has been established as an effective approach to control phase equilibria, domain configurations, and functional properties of ferroelectric thin films. Temperature-strain phase diagrams have been used as powerful tools for providing insights into strain engineering. However, almost all existing phase diagrams established using the phase-field approach assume quenching conditions without considering actual cooling rates during the post-deposition annealing process of ferroelectric thin films. Within this work, we systematically investigate the influence of cooling rates on domain structures and the strain-phase diagram of ferroelectric thin films using phase-field simulations, taking PbTiO3 thin films as a model system. We found that both the position of phase boundaries in the strain phase diagrams and the domain morphology are significantly influenced by the cooling rates. It is revealed that while the paraelectric-ferroelectric phase boundary remains invariant, the phase boundaries between single-phase and multi-phase regions tend to shift toward the corresponding multi-phase region as the cool rate reduces. Slow cooling generally leads to more ordered domain structures with increased domain size. Using the obtained equilibrium domain structures, we calculated effective thermal conductivities and found significant variations that can be tuned by the cooling rates. This work reveals an underexplored yet critical impact of cooling rates on phase equilibria and domain structures in ferroelectric thin films, which may inspire further fine-tuning of domains and domain walls in low-dimensional ferroelectrics for multifunctional applications.

关键词： Domain structures Ferroelectric thin films Phase diagrams Phase-field simulation Thermal conductivity

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Off-centering effect and crystal symmetry modification lead to high thermoelectric performance in diamondoid Cu2SnSe3

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National Science Open 2025年第3期 38-55页

作者： Pengpeng Chen Shulin Bai Yi Wen Yichen Li Zihao Zhao Dezheng Gao Houdong Huang Yixuan Hu Tian Gao Lei Wang Shaoping Zhan Xiang Gao Xianli Su Hongyao Xie Li-Dong Zhao School of Materials Science and Engineering Beihang University Center for Bioinspired Science and Technology Hangzhou International Innovation InstituteBeihang University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Center for High Pressure Science and Technology Advanced Research (HPSTAR)

Recently,dimensionless figure of merit （ZT） beyond 1.0 has been demonstrated in diamondoid Cu2SnSe3,positioning it as a low-cost and ecofriendly thermoelectric alternative,and sparking intense interest in further optimizing its thermoelectric ***,its intrinsic monoclinic structure and the compact packing of tetrahedral coordination lead to a light valence band and high thermal conductivity,which impede further performance improvement in ***,developing effective approaches to altering the local structure of Cu2SnSe3is important for further optimizing its thermoelectric ***,we identified and thoroughly investigated the atomic off-centering behavior in Cu2SnSe3,and demonstrated the electronic and phonon transport properties of Cu2SnSe3can be significantly enhanced by carefully modifying its monoclinic lattice into a distorted zinc-blende cubic structure via introducing Cd and off-centering Ag *** structure transition leads to band convergence and a reduction in the deformation potential of the material,resulting in a 7-fold enhancement in the density-of-state effective mass and an 85%increase in carrier ***,the off-centering effect results in strong acoustic-optical phonon scattering and an ultra-low lattice thermal conductivity of 0.3 W ***,a maximum ZT of 1.3 was obtained at 800 K for the Cu1.85Ag0.15Sn0.9Cd0.1Se3.

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Scalable polydopamine@ZrO2/PVDF composite ink for corrosion protection of magnesium alloy

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Colloids and Surfaces A: Physicochemical and Engineering Aspects 2025年 721卷

作者： Li, Zhenyang Yang, Kai Zhang, Pengxiang Wang, Yunfan Peng, Jian Li, Bao-Wen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices and Center of Biomedical Material and Engineering Wuhan University of Technology Wuhan430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

Two-dimensional (2D) materials have exhibited significant potential in the field of metal anticorrosion coatings. However, nanosheets with high electrical conductivity may promote "corrosion-enhancing activity," thereby compromising the protective efficacy of the coating. In contrast, metal oxide nanosheets derived from layered compounds present a promising alternative due to their favorable properties. In this study, a composite ink for AZ31 magnesium alloy anticorrosion with blade coating method is fabricated by polydopamine (PDA)-coated ZrO2 nanosheets/polyvinylidene fluoride (PVDF). The surface composition and microstructure of the resulting coating are systematically characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The anticorrosion properties of the composite coating are evaluated through potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The electrochemical results demonstrate that the ZrO2@PDA/PVDF coating achieves a corrosion protection efficiency of 99.93 %, with a corrosion current density of 9.48 × 10−8 A·cm−2, which is three orders of magnitude lower than that of bare AZ31. This study provides a new insight into the scalable application of metal oxide nanosheets in metal anticorrosion coatings. © 2025 Elsevier B.V.

关键词： Fourier transform infrared spectroscopy

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Chiral NIR-Ⅱ fluorescent Ag_(2)S quantum dots with stereospecific biological interactions and tumor accumulation behaviors

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Science Bulletin 2022年第12期67卷 1274-1283,M0004页

作者： Shaohua Qu Qian Jia Zheng Li Zhongliang Wang Li Shang State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical University(NPU)Xi’an 710072China Lab of Molecular Imaging and Translational Medicine(MITM) Engineering Research Center of Molecular&NeuroimagingMinistry of EducationSchool of Life Science and TechnologyXidian UniversityXi’an 710126China Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China

Near-infrared Ⅱ(NIR-Ⅱ)fluorescent nanoprobes hold great potential for biomedical *** the relationship between surface properties of NIR-Ⅱ nanoprobes and their biological behaviors is particularly important for future probe design and their performance *** the rapid development of NIR-Ⅱ nanoprobes,the distinct role of surface chirality on their biological fates has rarely been ***,chiral NIR-Ⅱ fluorescent Ag_(2)S quantum dots(QDs)are synthesized to investigate the relationship between their chirality and biological functions at both in vitro and in vivo levels.D-/L-Ag_(2)S QDs exhibit significant differences on their interactions with serum proteins,which further affect the cellular *** a result,D-Ag_(2)S QDs can be internalized with higher efficiency(over 2-fold)than that of L-Ag_(2)S ***,in vivo studies reveal that the chirality determines the primary localization of these chiral QDs,where a more efficient renal elimination of D-Ag_(2)S QDs was observed than that of L-Ag_(2)S ***,D-Ag_(2)S QDs show preferential accumulation in tumor region than that of L-Ag_(2)S QDs in orthotopic kidney tumor model,which points out a new avenue of enhancing targeting capabilities of nanoprobes by engineering their surface chirality.

关键词： Chirality NIR-Ⅱprobes Ag_(2)S quantum dots Protein corona Tumor targeting

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Superwettable Microchip for Visual Detection of Date-Rape Drug in Beverages

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SSRN 2024年

作者： Li, Zhenping Xu, Hao Du, Yukun Huang, Zhongyu Li, Jing Liu, Lian Dong, Ying Yang, Xiao-Yu Department of Forensic Medicine Tongji Medical College Huazhong University of Science and Technology 13 Hangkong Road Wuhan430030 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Shenzhen Research Institute Laoshan Laboratory Wuhan University of Technology 122 Luoshi Road Wuhan430070 China Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials School of Chemistry and Chemical Engineering Wuhan University of Science and Technology 947 Peace Avenue Wuhan430081 China Optosky Optical LTD 1130 Jimei North Avenue Xiamen361022 China Hubei Key Laboratory of the Forensic Science Hubei University of Police 99 Nanniwan Avenue Wuhan430034 China

Gamma-hydroxybutyric acid (GHB), which is used in drug-facilitated sexual assault, is typically delivered in the form of gamma-butyrolactone (GBL) in beverage carriers. In response to the growing need of methods for rapid and on-site sensing of the drugs, we carried out an investigation aimed at developing a superwettable microchip for visual detection of the date-rape drug GBL in adulterated beverages. The superwettable microchip is comprised of Fe3O4 nanoparticles which aggregate to form a reactive spot on a superhydrophobic fabric. The spot captures and confines microdroplets containing GBL on the superhydrophobic substrate. Fe(III), generated by HCl promoted reaction of the Fe3O4 spot, then participates in a colorimetric reaction with GBL to form a naked eye observable colored complex. Quantitative determination of GBL in beverages is achieved by analyzing the red-color content of a smartphone camera derived image. The detection range of this assay protocol is ca. 0.05-10 mg mL−1, which meets the requirements to detect potentially dangerous concentration of GBL in drinks. The detection stability of the superwettable microchip for GBL in water and common beverages is maintained over at least 30 cycles. © 2024, The Authors. All rights reserved.

关键词： Nanoparticles

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3D-architected carbon microtubule aerogel based phase change composite for multi-field-responsive high-efficiency energy conversion

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Composites Part B: Engineering 2025年 305卷

作者： Shaokun Song Runze Wang Linda Lv Wangting Zhu Rui Feng Lijie Dong Center for Smart Materials and Devices State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 PR China Center for Materials Research and Analysis Wuhan University of Technology Wuhan 430070 PR China

Phase change materials (PCMs) are pivotal for advanced thermal energy management and energy utilization systems, yet simultaneously balancing high latent heat, enhanced thermal conductivity, and multi-field-responsive thermal energy conversion capability in composite PCMs remains challenging. This study pioneers a carbon microtubule aerogel (CMA)-based composite PCM (CMAPCM) engineered from cobalt nanocatalyzed carbonized kapok fibers (CKF@CoNP), demonstrating unprecedented thermophysical performance. The hierarchically structured CKF@CoNP framework-featuring 3D interconnected carbon microtubules and catalytic CoNP sites-enables the synergistic enhancement in energy density, photon/electron transport, and multi-field responsiveness for the novel CMAPCM. The optimized CMAPCM-10/20/30 variants exhibit record high specific latent heats of 206.7–196.8 J/g (vs. 194.1 J/g for pristine PCM), alongside tunable thermal conductivity (0.66–0.94 W/m·K) with CMA content below 1.2 wt%. The highlighted CMAPCM-20 as the optimal candidate, exhibits solar-thermal conversion efficiencies of 0.73, 0.91, and 0.97 under solar intensities of 0.7, 1.0, and 1.4 sun, respectively, coupled with a solar-thermoelectric conversion efficiency of 0.51 when paired with thermoelectric generators. Additionally, it achieves electrothermal conversion efficiencies of 0.61, 0.91, and 0.94 at 0.5, 1.0, and 1.5 W inputs. The composite maintains its latent heat capacity well after 2000 thermal cycles, confirming structural stability. By unifying the ultrahigh latent heat capacity, tunable thermal conductivity, and multi-field energy conversion in a single material system, this work establishes a versatile platform for solar-thermal systems, off-peak electricity storage, smart thermal management, and infrared/electromagnetic compatibility applications.

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Remediation of diesel-oil contaminated soils using an innovative nanobubble and electrolyzed catalytic system

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Journal of Cleaner Production 2023年 432卷

作者： Chen, Wei-Ting Chun-Te Lin, Justin Chen, Shih-Hsiung Verpoort, Francis Hong, Kun-Liang Surampalli, Rao Y. Kao, Chih-Ming Institute of Environmental Engineering National Sun Yat-Sen University Kaohsiung Taiwan Department of Environmental Engineering and Science Feng Chia University Taichung Taiwan Department of Environmental Engineering and Science Chia Nan University of Pharmacy and Science Tainan Taiwan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Suzhou Dingdedian Environmental Protection Technology Co. Ltd. Suzhou China Global Institute for Energy Environment and Sustainability LenexaKS United States

Soil contamination resulting from petroleum hydrocarbons poses a significant environmental challenge. In this research, an innovative electrolyzed catalytic system was devised to produce nanobubble-enriched catalytic water, which was employed for remediating soils contaminated with diesel oil. This novel system harnessed high voltage (220 V) via direct current, utilizing titanium electrodes coated with iridium dioxide. The inclusion of iron-copper hybrid oxide catalysts between the electrodes was instrumental in enhancing the efficiency of radical generation. The study employed the electron paramagnetic resonance (EPR) technique and the Rhodamine B (RhB) method to analyze the species and concentration of the generated radicals. EPR is a versatile tool for investigating materials with unpaired electrons and is capable of quantifying reaction kinetics for transition metals. RhB can be used as a probe for hydroxyl radical concentration determination. The addition of an electrolyte (NaCl or K2SO4) could enhance the electrolytic reaction and improve radical production rate. By incorporating 20 mM of K2SO4 and utilizing 75 g of catalyst per 500 mL batch of nanobubble-contained electrolyzed catalytic water (NECW) production, with a current density of 20 mA/cm2, a highly oxidized nanobubble-infused electrolyzed catalytic water was successfully generated. This water exhibited an oxidation-reduction potential of 887 mV and contained a radical concentration of 7.6 × 10−13 M, encompassing hydroxyl, superoxide, and sulfate radicals. Furthermore, it displayed a negative zeta potential of −39.8 mV, along with nanobubbles averaging 28 nm in diameter and a nanobubble density of 3.7 × 109 particles per milliliter. The presence of nanobubbles in electrolyzed catalytic water, owing to their negative zeta potential and nano-scale attributes, imparts a repulsive force that hinders bubble aggregation and prolongs their existence. When these nanobubbles burst, the resulting radicals contri

关键词： Oxidation

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A REVIEW OF GRAPHDIYNE IN AQUEOUS ION BATTERIES

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Carbon 2024年 228卷

作者： Xian-min Xu Wen-cong Feng Jing-ke Ren Wen Luo State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Department of Physics School of Science Wuhan University of Technology Wuhan 430070 China

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Research on the Bonding Properties of Vitrified Bonds with Porous Diamonds and the Grinding Performance of Porous Diamond Abrasive Tools

Research Square

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Research Square 2021年

作者： Li, Jianwei Fang, Wenjun Wan, Long Liu, Xiaopan Hu, Weida Cao, Dan Han, Kai Li, Yingying Yan, Yonggao Hunan University College of Materials Science and Engineering China Hunan University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body China Hunan University of Technology Liling ceramic institute China Shangqiu Institute of Technology China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology China

Ordinary diamond presents the disadvantages of poor self-sharpening and concentrated grinding stress when it is used as an abrasive. Moreover, this kind of diamond cannot be well wetted by the vitrified bond, resulting in a lower holding force of the binder to the abrasives (i.e., the diamond is easy to detach from the binder matrix during grinding). These comprehensive factors not only reduce the surface quality of the processed workpiece, but also hinder the processing efficiency. In order to solve these problems, a new type of porous diamond with high self-sharpening properties was prepared using a thermochemical corrosion method in this study. Our results showed a great improvement in pore volume and specifisurface area of the porous diamond compared with ordinary diamond abrasive particles, and the holding force and wettability of vitrified bond to the porous diamond abrasive particles were also improved. Compared with ordinary diamond abrasive tools, porous diamond abrasive tools showed a 29.6% increase in grinding efficiency, a 15.5% decreased in grinding ratio, a 27.5% reduction in workpiece surface roughness, and the scratches on the silicon wafer surface were reduced and refined. © 2021, CC BY.

关键词： Grinding (machining)

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