Journal of Energy Chemistry
·
2025
·
IF 14.9
Yu Mao,Mengyang Wang,Yuanyuan Huang,Yanmei Deng,Wenjian Chan,Ziyang Ren,Ening Gu,Sambasivam Sangaraju,Xianzhong Lin,Guowei Yang
The inkjet-printed Cu 2 ZnSn(S,Se) 4 (CZTSSe) has garnered extensive attention owing to its cost-effectiveness, high-throughput fabrication, and roll-to-roll compatibility. However, selenium volatility loss during high-temperature selenization induces detrimental defects in both the bulk and interface, limiting CZTSSe solar cell performance. Here, we develop a simple and controllable low-temperature selenium post-treatment (Se-LPT) strategy to compensate for the selenium loss. Systematic studies reveal that the Se-LPT can effectively passivate selenium vacancy deep-level defects in the CZTSSe absorber and suppresses carrier nonradiative recombination, thereby reducing the open-circuit voltage deficit from 336 to 298 mV. Furthermore, this treatment lowers the carrier transport barrier and facilitates efficient carrier transport by reducing the spike-like conduction band offset at the heterojunction interface. The enhanced carrier density and conductivity further contribute to the short-circuit current improvement. Consequently, the Se-LPT CZTSSe devices deliver an efficiency of 14.13%, representing the highest performance reported to date for inkjet-printed CZTSSe solar cells. This work demonstrates an effective route for developing cost-effective and high-efficiency CZTSSe photovoltaics.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 1
·e70170
·
IF 12.1
Jie Tu,Hangren Li,Xudong Liu,Jiaqi Ding,Siyuan Du,Longyuan Shi,Menglin Li,Yonghui Wu,Pengfei Song,Guoqiang Xi,Yuzhe Yang,Dongxing Zheng,Xiaolong Li,Jianjun Tian,Linxing Zhang
en Double-perovskite multiferroic systems have attracted increasing attention due to their highly tunable structures and chemical adaptability. The uncontrollable performance changes caused by the release of boundary conditions are an important factor hindering the development of freestanding membranes. Here, the freestanding BiSmFe 2 O 6 (BSFO) double-perovskite membranes with a fixed mechanical boundary are proposed, leveraging adaptive chemical modification, a distortion that breaks intrinsic properties, during the boundary creation process. This is attributed to the tendency of film systems with abnormal Poisson deformation to develop chemical strain during the lattice volume change process. We employ electrodynamic decomposition, an approach enabling intact release of wrinkle-free membranes, which enhances the quality of freestanding membranes and the controllability of the mechanical boundary. Compared to the epitaxial films, the freestanding BSFO double-perovskite membranes retain the same ferroelectric origin and lattice parameters, with comparable electrical and optical behaviors, all reflecting the preservation of the about 5.06 GPa chemical strain boundary post-peeling. These findings underscore the effectiveness of adaptive chemical modulation in achieving constant mechanical boundary conditions for strained materials with outstanding performance. 摘要 zh 双钙钛矿多铁体系因其高度可调的结构和优异的化学适配性,已引起学术界的广泛关注。自支撑薄膜的边界条件释放引发的性能不可控变化是制约其发展的关键因素。本文提出一种通过自适应化学调控策略制备具有固定机械边界的自支撑BiSmFe 2 O 6 (BSFO)双钙钛矿薄膜的方法,该策略可有效抑制边界构建过程中因结构畸变导致的本征性能改变。这一现象源于,在具有反常泊松形变特性的薄膜体系中,晶格体积变化易形成化学应变的内在趋势。研究采用电动力学分解技术,实现了无褶皱双钙钛矿薄膜的完整剥离,显著提升了自支撑薄膜的品质与机械边界的可控性。与外延薄膜相比,所制备的自支撑BSFO 双钙钛矿薄膜不仅保留了相同的铁电起源与晶格参数,其电学及光学性能亦具有良好的一致性,这一结果证实剥离后薄膜仍维持约 5.06 GPa 的化学应变边界。本研究为实现应变功能材料的恒定机械边界调控及优异性能保留提供了有效的自适应化学调控路径,具有重要的应用前景。
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Xiaoxuan Qu,Yifeng Du,Chengzhuan Gong,Jinming Guo,Xuebin Zhu,Bingbing Yang
Antiferroelectrics are promising for high-energy-density storage owing to their characteristic double hysteresis loops. However, their performance is severely limited by their antiferroelectricity instability, low breakdown strength, and high hysteretic loss. This study proposes a performance optimization strategy based on polymorphic polar order engineering. By the introduction of LaScO 3 nonpolar end-member into antiferroelectric PbHfO 3 , the long-range antipolar orders were disrupted and thus establish a polymorphic polar configuration, combining short-range antipolar orders and disordered nonpolar regions. This structure, directly observed via atomic-scale scanning transmission electron microscopy, simultaneously delays the antiferroelectric-ferroelectric phase transition field, depresses the field-induced hysteretic loss, and improves the breakdown field. Consequently, the optimized polymorphic PbHfO 3 −based relaxor antiferroelectric achieves a high energy density of 100.3 J cm − 3 and efficiency of 76.3%, rivaling the advanced antiferroelectrics. Moreover, the films demonstrate exceptional stability under a broad temperature (−100°C to 200°C) and frequency (1–100 kHz) ranges, as well as extended cycling (up to 10 8 cycles). This work not only elucidates the microscopic mechanism of polymorphic polar order in optimizing antiferroelectric energy storage performance but also provides a novel design strategy for antiferroelectrics that integrates high energy density, high efficiency, and superior reliability.
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高影响因子
Energy & Environmental Materials
·
2026
·
IF 14.1
Yanmei Deng,Yu Mao,Mengyang Wang,Yuanyuan Huang,Wenjian Chan,Ziyang Ren,Ening Gu,Sambasivam Sangaraju,Xianzhong Lin,Guowei Yang
Cu 2 ZnSn(S,Se) 4 (CZTSSe) thin-film solar cells have garnered significant interest owing to their appealing properties, such as earth-abundant composition, environmental friendliness, high light absorption coefficient and optimal bandgap. However, current high-efficiency CZTSSe devices (>13%) are predominantly fabricated by spin-coating, which is limited in scalability for mass production. To overcome this issue, we developed a scalable doctor-blading method compatible with roll-to-roll processing. For the first time, a molecular precursor ink based on 2-methoxyethanol solvent was adapted in doctor-blading for CZTSSe thin film preparation. The preheating temperature was systematically optimized to obtain high-quality precursor layers. It was found that the preheating temperature significantly influences the solvent evaporation kinetics, leading to the formation of cracks of varying sizes on the precursor film surface. At the optimal preheating temperature of 340 °C, moderately sized cracks were generated, which effectively facilitated the penetration of Se vapor during selenization and promoted grain growth in the absorber layer. This optimization notably enhanced the crystallinity and reduced the defect density of the CZTSSe absorbers. Furthermore, Kelvin probe force microscopy measurements revealed that the films preheated at 340 °C exhibited pronounced downward band bending at grain boundaries and the narrowest contact potential distribution, which effectively promoted charge carrier separation and suppressed nonradiative recombination. Consequently, a record power conversion efficiency of 13.26% was achieved for doctor-bladed CZTSSe solar cells. This work demonstrates a viable and scalable strategy for producing low-cost and highly efficient CZTSSe thin-film photovoltaics.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 3
·239
·
IF 2.8
Gao Chang,Huang Lijuan,Liu Qi,Wu Shize,Xu Zedong,Zhao Chunlin,Wu Xiao,Gao Min,Lin Cong
Lead-based multilayer thin film capacitors with excellent energy storage performances have great application potential. However, the effect of stacking patterns on the dielectric behaviors has not been well investigated, especially for the multilayer thin films prepared by chemical solution methods. Here, the relaxor ferroelectric (RFE) (Pb 0.92 La 0.08 )(Zr 0.65 Ti 0.35 )O 3 and antiferroelectric (AFE) (Pb 0.98 La 0.02 )(Zr 0.95 Ti 0.05 )O 3 were chosen to construct diverse multilayer thin film capacitors with different RFE/AFE stacking patterns. Based on their crystal structure, dielectric features, and energy storage behaviors, the effect of stacking orders and AFE phase thicknesses on the capacitor performances were discussed from the perspectives of the positive and negative interface contribution. A superior recoverable energy density of 26.28 J cm −3 was achieved at a breakdown strength of 3.19 MV cm −1 , accompanied with thermal stability up to 170 °C, frequency stability up to 2 kHz, and fatigue endurance after 10 6 charging-discharging cycles. The experimental results and related discussion will support the research and the industrialization of multilayer thin film capacitors.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Xiaofang Wen,Hongcan Lou,Zheng Li,Jiehao Xie,Zirui Qin,Xingkun Chen,Yuan Tan,Nian Lei,Wei Lu,Yunjie Ding
The development of efficient catalysts for the selective hydrogenation of dimethyl oxalate (DMO) to high-value oxygenates is of great industrial importance. This study presents a systematic investigation into the promotional effect of gallium (Ga) on Cu/SiO 2 catalysts for tailoring product selectivity in DMO hydrogenation. A series of Ga x Cu 30 /SiO 2 catalysts with varying Ga loadings (x = 0.5, 1, 3 wt%) were synthesized via the ammonia evaporation method. With a moderate Ga doping of 0.5 wt%, the Ga 0.5 Cu 30 /SiO 2 catalyst achieved an exceptional ethylene glycol (EG) yield of 74 %, which is three times higher than its Ga-free counterpart (23 %). Further increases in Ga loading to 1 and 3 wt% redirected the reaction pathway, steering the selectivity towards ethanol (ET, 81 %) and 2-methoxyethanol (MT, 54 %), respectively. Characterization by N 2 O titration, XRD, XPS, in situ FT-IR and H 2 -TPR revealed that Ga incorporation fine-tunes the synergy between metallic Cu 0 (for H 2 dissociation) and Cu + sites (for C=O bond polarization). Concurrently, the generated surface acid sites facilitate subsequent dehydration and hydrogenolysis steps. Consequently, the catalytic performance is directly correlated with the evolution of Cu valence states and surface acidity. This work provides a rational strategy for designing multifunctional catalysts for the selective synthesis of target chemicals from DMO.
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Scientific Reports
·
2026
·
IF 3.9
Wang Aqin,Zhou Zhengbing,Hang Zhou,Lyu Zhengbing,Yang Jingchun,Zhang Lu,Wang Meng,Liu Wei,Zou Liqiang,Yu Jun
Direct oral intervention of spleen aminopeptide (SA) would be limited because of its varied swelling and release rate in different pH environments of digestive fluids. Herein, pH-responsive hydrogel microspheres (3.67 ± 0.04 mm) with positive SA-loaded chitosan (Cs) core and negative alginate (ALG) shell were prepared. Entrapment efficiency was 76.22% and loading rate of SA was 35.17%. Besides the hydrogen bonding, a strong core/shell structure was constructed by forming imine bond via the Schiff base reaction of amino group in Cs with ketone group on SA. In vitro simulated digestion showed that the swelling rate of microspheres was 192.8% (pH 1.2), 2481.5% (pH 6.8), and 1144.3% (pH 7.4). The release rate of SA was 0.9% in simulated gastric fluid for 2 h, 6.0% in simulated intestinal fluid for 2 h and continuous release in simulated colonic fluid for 24 h with a cumulative release rate of 92.4%. After treatment, the observation group exhibited increasing levels of CD3 + , CD4 + , CD4 + /CD8 + , IgA, IgG and IgM. Total effective rate in observation group was 96.15%, being higher than that in control group (84.31%). This work provided a valuable reference for preparing drug-loaded hydrogels to improve the recurrent respiratory infection in children.
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PubMed
高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Yu Mao,Mengyang Wang,Yanmei Deng,Wenjian Chan,Ziyang Ren,Chenyu Zhong,Ening Gu,Mehmet Ali Olgar,Xianzhong Lin,Guowei Yang
Mitigating the open-circuit voltage ( V OC ) deficit caused by non-radiative recombination at the back interface remains a critical challenge for high-performance Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells. Conventional passivation using an ultrathin insulating interlayer at the CZTSSe/Mo interface suffers from an inherent trade-off between passivation quality and charge transport. To address this limitation, we introduce a scalable direct-writing inkjet printing technique to construct patterned micro-nano insulator arrays composed of SiO 2 nanoparticles at the back interface. By tailoring the printing parameters to design controllable passivation structures, interface recombination is effectively suppressed while maintaining efficient carrier transport through local openings. As a result, the interface defect density is reduced by 46% and the carrier lifetime is prolonged more than two times. The champion device achieves a remarkable power conversion efficiency (PCE) of 15.03% with an optimal passivation area of 11%. Notably, its V OC deficit is only 253 mV, representing the lowest value among high-performance CZTSSe solar cells. This work provides a novel avenue for interface engineering to suppress non-radiative recombination and demonstrates the potential of inkjet printing technique for advanced contact design in photovoltaics. High-performance CZTSSe solar cell with efficiency exceeding 15% is achieved via back-interface patterned insulator passivation strategy. Optimized back-interface effectively suppresses non-radiative recombination and reduces open-circuit voltage deficits. Download: Download high-res image (154KB) Download: Download full-size image
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·Vol. 36
·期 60
·e76784
·
IF 19.9
Xinyue Chen,Fangxin Zou,Junxiao Mu,Chen Zhuo,Yankai Bo,Zengshuo Liu,Siyuan Dong,Cheng Liu,Yousi Chen,Zhihuan Weng,Jia-Zhuang Xu,Zhong-Ming Li,Shouhai Zhang,Xigao Jian,Hailong Li
Thermo-acoustic insulation aerogels have received increasing attention in the aerospace sector. However, fabricating superstrong thermo-acoustic insulation aerogels via a green and efficient method remains a significant challenge. Herein, superstrong polyethersulfone (PES) aerogels are successfully fabricated via a novel and efficient strategy, integrating freeze casting, etching with water, and mild ambient pressure drying (APD), which involves no extra organic solvents. By tuning the PES concentration, PES aerogels with different morphologies and microstructures are tailored, enabling a tunable property spectrum to meet diverse application needs. Specifically, the 11 wt.% PES demonstrates an exceptional axial compression modulus (36.4 MPa), making it ideal for load-bearing components in aerospace systems. In contrast, the 9 wt.% PES achieves an enhanced acoustic performance (NRC = 0.41), underscoring its potential for construction application. Besides, all PES aerogels maintain low thermal conductivity (0.0397–0.0569 W/(m·K) in the axial direction) and self-extinguishing behavior. Notably, the PES aerogels are fully recyclable, which presents an opportunity to establish a sustainable circular economy. And last but not least, this fabrication strategy is universal and applicable to other engineering plastics. This work establishes a green, cost-effective and scalable pathway to fabricate superstrong thermo-acoustic insulating polymer aerogels, overcoming a key bottleneck toward their industrial adoption.
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Nanomaterials
·
2026
·Vol. 16
·期 14
·861
·
IF 4.8
Bing Yang,Qiao Guo,Hongmin Li,Gang He,Shanshan Jiang,Longwei He,Xiang Li,Peng Yu
In this work, a post-annealing rapid cooling and aging treatment process is innovatively proposed to build high-performance zinc tin oxide (ZTO) thin-film transistors. The relaxation effect on the abundant oversaturated oxygen vacancy deep-level traps contributes to the shallow donor formation during the aging period. The TFTs aged in an air environment for 10 days possess significantly improved electrical performance, including a clearly increased on/off current ratio of 7 × 106from 2 × 104and a markedly increased saturation mobility of 5.9 from 2.2 cm2·V−1·s−1, verifying the facile method to improve the electrical property of polycrystalline TFTs, and the method has been investigated using the grain boundary defect relaxation model and energy band theory. It is worth mentioning that the TFTs aged under vacuum conditions realized more effective regulation and control on off-state current and demonstrated a wider aging time window. The distinctive illumination interface stability was studied in depth using a charge trapping model and electron–hole pair model, which embody the potential application in photoelectric detectors.
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Yulong Wang,Yunjie He,Zhen Cheng,Yi Zhang,Wenhang Yan,Da Xu,Shujuan Liu,Qiang Zhao,Xiuwen Xu
Interfacial thermal stress is a common issue limiting the performance of perovskite optoelectronics, particularly x-ray detectors. This challenge originates from thermomechanical incompatibility: conventional high-temperature perovskite crystallization induces severe interfacial thermal stress upon cooling, triggering film delamination and cracking. Herein, through solvent engineering and intermediate design, we demonstrate, for the first time, the low-temperature formation of perovskite thick films, mitigating this issue at its origin. This is achieved by a new perovskite ink formulation containing highly volatile 2-methoxyethanol (2-ME) and monodentate coordinating 1-cyclohexyl-2-pyrrolidone (CHP). This combination yields a new intermediate, (CHP) 2 Pb 3 I 6 , that largely decouples nucleation from growth and lowers the crystallization temperature from 135 to 75°C. This reduction, along with an improved wettability, decreases the interfacial thermal stress by ∼75% and doubles the interfacial adhesion strength. Consequently, robust integration of perovskite thick films with an indium-gallium-zinc-oxide (IGZO) thin-film transistor (TFT) backplane is achieved. The resulting flat-panel imager delivers a spatial resolution of 4.73 lp mm −1 (0.59 lp pix −1 ) when the modulation transfer function (MTF) reaches 0.2, outperforming commercial amorphous selenium (α-Se) and previous perovskite-based imagers. This work elucidates intermediate-regulated crystallization thermodynamics and opens avenue for integrating monolithic perovskite optoelectronics onto temperature‑sensitive substrates.
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高影响因子
Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·295
·
IF 38.5
Zeng Li,Jiang Chenhui,Li Yuan,Yin Hao,Li Qichao,Liu Hezhou,Guo Yiping
A monolithic, structurally flexible, continuous Pb(Zr 0.52 Ti 0.48 )O 3 (PZT) piezoelectric fiber was innovatively fabricated through network architecture design.
The PZT framework well inherited the macro- and micro-structure of the mesh fabric, endowing the PZT-silicone composite material with high stretchability up to 220%.
The developed strain sensor exhibited both high stretchability (100%) and high sensitivity (39.57 mV kPa −1 ), thus enabling its application in subtle surface roughness perception and large-strain human motion monitoring.
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高影响因子
危险品化学品经营许可证（带存储）