Nanomaterials
·
2022
·Vol. 12
·期 7
·1191
·
IF 5.719
Han Lu,Mingliang Jin,Zongbao Zhang,Sujuan Wu,Lingling Shui
Flexible sensors are highly advantageous for integration in portable and wearable devices. In this work, we propose and validate a simple strategy to achieve whole wafer-size flexible SERS substrate via a one-step metal-assisted chemical etching (MACE). A pre-patterning Si wafer allows for PSi structures to form in tens of microns areas, and thus enables easy detachment of PSi film pieces from bulk Si substrates. The morphology, porosity, and pore size of PS films can be precisely controlled by varying the etchant concentration, which shows obvious effects on film integrity and wettability. The cracks and self-peeling of Psi films can be achieved by the drying conditions after MACE, enabling transfer of Psi films from Si wafer to any substrates, while maintaining their original properties and vertical alignment. After coating with a thin layer of silver (Ag), the rigid and flexible PSi films before and after transfer both show obvious surface-enhanced Raman scattering (SERS) effect. Moreover, flexible PSi films SERS substrates have been demonstrated with high sensitivity (down to 2.6 × 10−9g/cm2) for detection of methyl parathion (MPT) residues on a curved apple surface. Such a method provides us with quick and high throughput fabrication of nanostructured materials for sensing, catalysis, and electro-optical applications.Keywords:surface-enhanced Raman scattering;flexible sensor;porous silicon film;large-area fabrication
研究领域:
材料科学
·
传感技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Weitian Xu,Peiyun Yi,Jie Gao,Yujun Deng,Linfa Peng,Xinmin Lai
Inspired by nature, large-area stable superhydrophobic poly(dimethylsiloxane) (PDMS) films have generated extensive interest for various applications such as self-cleaning, corrosion protection, liquid transport, optical services, and flexible electronics. However, the current methods used to prepare such films are difficult to apply for efficient large-area fabrication. In this article, an effective technique for fabricating low adhesive superhydrophobic films based on the use of a chemically etched template followed by a thermal curing process is introduced. On the basis of this approach, the importance of chemical solution concentration as well as etching time is discussed to outline the specific rules required for forming different surface topographies of the templates. Then, PDMS films with varying wettabilities can be fabricated in which one can achieve CA > 160° and SA < 10°. Finally, for engineering needs and actual preparation, large-area PDMS films are obtained via a roll-to-roll (R2R) process, which show a superhydrophobic property even after high-intensity friction and have excellent acid and alkaline resistance, UV resistance, and optical transparency. The prepared large-area stable superhydrophobic PDMS films have the potential to be used in the aerospace field in the future because of their excellent anti-icing performance.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today
·
2021
·
IF 31.041
Liusi Yang,Dashuai Wang,Minsu Liu,Heming Liu,Junyang Tan,Zhongyue Wang,Heyuan Zhou,Qiangmin Yu,Jingyun Wang,Junhao Lin,Xiaolong Zou,Ling Qiu,Hui-Ming Cheng,Bilu Liu
Two-dimensional (2D) materials have many promising applications, but their scalable production remains challenging. Herein, we develop a glue-assisted grinding exfoliation (GAGE) method in which the adhesive polymer acts as a glue to massively produce 2D materials with large lateral sizes, high quality, and high yield. Density functional theory simulation shows that the exfoliation mechanism involves the competition between the binding energy of selected polymers and the 2D materials which is larger than the exfoliation energy of the layered materials. Taking h-BN as an example, the GAGE produces 2D h-BN with an average lateral size of 2.18 μm and thickness of 3.91 nm. The method is also extended to produce various other 2D materials, including graphene, MoS 2 , WS 2 , Bi 2 O 2 Se, mica, vermiculite, and montmorillonite . Two representative applications of thus-produced 2D materials have been demonstrated, including 2D h-BN/polymer composites for insulating thermal conduction and 2D MoS 2 -based electrocatalysts for large-current-density hydrogen evolution , indicating the great potential of massively produced 2D materials.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2021
·Vol. 222
·期 17
·2100062
·
IF 2.527
Wan-Zhen Fo,Gui Ying Xu,Hao-Jie Dong,Lin-Na Liu,Yao Wen Li,Lei Ding
Blade-coating, a prototype tool for slot-die coating is a promising technique showing high compatibility with large-area roll-to-roll coating. Here, a high-performance PM6:Y6-based device is fabricated with chlorobenzene (CB) through a novel binary solvent additive (1-chloronaphthalene (CN):diphenyl ether (DPE)). It can be found that the binary solvent additive can improve the crystallinity of the acceptor and forms a better phase separation domain, which would promote the effective separation of charge and inhibit charge recombination. As a result, high power conversion efficiency (PCE) of 15.77% can be achieved with the spin-coating method, which is similar to the best organic solar cells (OSCs) processed with chloroform (CF) solution. Moreover, a blade-coated OSC is also processed with CB and demonstrates a promising PCE of 11.69% with large-area device (1.2 cm 2 ). These results are critical for the large-scale production of highly efficient OSCs.
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Haopeng Jing,Chunjian Wang,Kun Li,Ran Jiang,Jumei Zhou,Hongtao Cao,Hongliang Zhang
Electrochromic devices (ECD) have become a hot research topic in the field of green buildings due to their excellent energy efficiency and thermal management capabilities. Currently, challenges such as difficulties in large-area preparation, high costs, and degradation of electrochromic performance over time have hindered their widespread application. A strategy incorporating a dual-phase nanocrystalline structure of WO 3 and TiO 2 ·H 2 O is proposed, in which specific synthesis parameters are precisely controlled to tailor the microstructure and composition of the films, enabling the fabrication of large-area WO 3 -PB ECD with UV-rejuvenation electrochromic performance. As a result, the as-prepared WO 3 -PB ECD exhibits an optical modulation of 75.6% and a remarkable cycle life exceeding 13,000 cycles. The electrochromic performance degradation caused by long cycles can be restored via UV irradiation. Utilizing UV light to restore the performance of these WO 3 -PB ECDs promotes sustainable and environmentally friendly development, highlighting their important practical value.
研究领域:
绿色建筑技术
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材料科学
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纳米技术
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能源效率
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光电子学
✓ 已验证
产品关联
DOI
高影响因子
Solar RRL
·
2021
·Vol. 5
·期 4
·2000733
·
IF 8.582
Yibo Xu,Shubo Wang,Leilei Gu,Ningyi Yuan,Jianning Ding
The fabrication of large area perovskite solar modules (PSMs) is attracting increasing attention. Traditionally, thin film solar modules are prepared by laser-engraving several isolated lines to create a series of subcells. This process inevitably leads to an increase in series resistance when combining the subcells. Herein, a facile structure combining series and parallel cell connections is designed and developed for constructing PSMs. A champion power conversion efficiency (PCE) of 18.82% is achieved for perovskite composite modules with a designated area of 21.06 cm 2 . Furthermore, the PSMs can continue to operate even when parts of the device are shaded or broken. Because of the repeated structural arrangement, these modules may be suitable for fabrication on a broader scale for commercial applications.
研究领域:
材料科学
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可再生能源
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光伏技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Fuhuan Wang,Weifeng Zhang,Xiaojie Cheng,Yanmin Wang,Yuechao Yao,Jun Zhang,Ting Chen,Yucun Zhou,Shaorong Wang,Hewu Wang,Liangfei Xu,Minggao Ouyang,Jianqiu Li
Solid oxide fuel cells (SOFCs) are pivotal in addressing global energy and environmental challenges, but their durability and maintenance costs are often limited by interface issues between yttria-stabilized zirconia (YSZ) electrolytes and active cathodes at high operating temperatures. Cerium-based oxides, particularly gadolinium-doped ceria (GDC), have proven effective in mitigating these challenges by acting as efficient buffer layers. In this study, we present a one-step spin-coating method for fabricating a thin, dense GDC buffer layer using GDC nanoparticles. A ∼1 μm thick, high-density (density >80 %) buffer layer is achieved by calcining at 1250 °C, forming a continuous and cohesive interface with the electrolyte. Single cells incorporating this buffer layer exhibit an ohmic resistance of 0.15 Ω cm 2 and achieve a peak power density of 0.81 W cm −2 at 800 °C. Stability is demonstrated by operating the cell at 0.4 A cm −2 and 750 °C for over 200 h with stable performance. Furthermore, the fabrication method has been successfully scaled up for 10 × 10 cm 2 large-area cells, yielding a power output of 31.6 W at 0.7 V at 750 °C. The proposed scalable and cost-effective fabrication technique offers significant potential for the large-scale production of high-performance SOFCs.
研究领域:
材料科学
·
能源工程
·
电化学
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陶瓷学
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功能材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2018
·
IF 13.709
Yi Wu,Jing Zeng,Yinsong Si,Min Chen,Limin Wu
Transparent superamphiphobic surfaces that repel various liquids have many important applications, but there are critical challenges in their fabrication, such as expensive or complicated fabrication methods, contradictions between the rough surface for superamphiphobicity and smooth surface for transparency, large-area fabrication, etc. Herein, we report a simple and effective strategy for large-scale fabrication of robust, transparent, and superomniphobic polymer films by combined unidirectional rubbing and heating-assisted assembly technology. The obtained polymer films display two kinds of special structures of monolayer ordered re-entrant geometries with either hexagonally triangular protrusions or with hexagonally rectangular micropillars, depending upon the sphere diameters of silica templates, and demonstrate excellent repellence to water and low-surface-tension liquids, as well as high transparency.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Qiqi He,Kai Yao,Xiaofeng Wang,Xuefeng Xia,Shifeng Leng,Fan Li
Flexible perovskite solar cells (PSCs) using plastic substrates have become one of the most attractive points in the field of thin-film solar cells. Low-temperature and solution-processable nanoparticles (NPs) enable the fabrication of semiconductor thin films in a simple and low-cost approach to function as charge-selective layers in flexible PSCs. Here, we synthesized phase-pure p-type Cu-doped NiOx NPs with good electrical properties, which can be processed to smooth, pinhole-free, and efficient hole transport layers (HTLs) with large-area uniformity over a wide range of film thickness using a room-temperature solution-processing technique. Such a high-quality inorganic HTL allows for the fabrication of flexible PSCs with an active area >1 cm2, which have a power conversion efficiency over 15.01% without hysteresis. Moreover, the Cu/NiOx NP-based flexible devices also demonstrate excellent air stability and mechanical stability compared to their counterpart fabricated on the pristine NiOx films. This work will contribute to the evolution of upscaling flexible PSCs with a simple fabrication process and high device performances.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Lin Zhang,Nuomei Li,Qiuchen Ma,Jiahui Ding,Chuang Chen,Zhaocheng Hu,Weiwei Zhao,Yufeng Li,Huanhuan Feng,Mingyu Li,Hongjun Ji
A series of large-area, flexible and transparent ultraviolet (UV) photodetectors (PDs) based on Ag nanowire (NW)@ZnO nanorods (NRs) are fabricated by an inexpensive, facile and effective approach. These Ag NW@ZnO NRs are successfully synthesized using a two-step method in an oil bath with a high surface-to-volume ratio and good crystallinity. The PDs are fabricated by drop-coating with different drop-coating times on the surface of polyethylene terephthalate (PET) coupled with Au electrodes. By optimizing the cross-linked network of Ag NW@ZnO NRs, PD2 with a size greater than 25 mm exhibits excellent photoresponse under UV light illumination of 365 nm (1.3 mW cm - 2 ) with a bias of 5 V: a high sensitivity of over 10 3 , and a much shorter rise/decay time of 2.6 s/2.3 s. Simultaneously, the detector exhibits an average transmittance of more than 70% in the visible light region, as well as good flexibility and excellent mechanical stability under a bending angle of 120° over 1000 circles bending. These integral advantages have significant potential for practical applications and mass production.
研究领域:
材料科学
·
纳米科技
·
光电子学
·
柔性电子学
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半导体器件
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表面科学
·
薄膜技术
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Zhi-Wei Chen,Jing Mu,Meng-Zhen Song,Zhi-Meng Sui,Xiao Chen,Yun-Xia Li,Yu-Fang Wu,Liao-Kuo Gong,Pei-Pei Luo,Xiao-Wu Lei
Zero-dimensional (0D) organic–inorganic metal halides (OIMHs), as a new frontier of solid-state photoluminescent materials, have been demonstrated to show outstanding radioluminescence (RL) properties and multiple applications originating from self-trapped excitons. Herein, two new 0D OIMHs of (DTBEDA)2Cu4Cl8 and (MOPPZ)2Cu4Cl8·H2O based on [Cu4Cl8]4– were successfully prepared with near-unity broadband orange and yellow light emissions, respectively. Meaningfully, the microscale crystals of both halides can be rapidly and facilely synthesized in the large scale by simply adding the CuCl in acid solution at room temperature, which greatly expand the practical application prospect of these metal halides. Benefiting from the near unity PLQY and negligible self-absorption characteristics, (DTBEDA)2Cu4Cl8 achieves excellent scintillation property with a high light yield of 38,200 phonon MeV–1 and low detection limit of 81.7 nGyair s–1, which provides the prerequisite for high-resolution X-ray imaging. In addition, a flexible film scintillation screen of (DTBEDA)2Cu4Cl8@EVA was manufactured, which achieves an astonishing spatial resolution of 18.1 lp mm–1. The multiple advantages of rapidly and large-scale synthesis, microscale size, and satisfactory scintillation performance not only demonstrate a new synthesis strategy for 0D OIMH-based scintillators but also expand the practical application range of 0D OIMHs.
研究领域:
材料科学
·
核医学
·
生物医学工程
·
影像学
·
辐射探测
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纳米材料
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光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2025
·
IF 26
Chunjie Huang,Zhenghao Liu,Shiyu Jiang,Xiangjin Du,Chengyu Tan,Xinru Qin,Yuqi Cui,Rui Zhang,Yiming Li,Fubo Tian,Jiangjian Shi,Huijue Wu,Yanhong Luo,Dongmei Li,Qingbo Meng
Large area, dense, and uniform SnO 2 films with fewer defects are essential for high-quality perovskite films and efficient n-i-p typed perovskite modules. In this respect, based on the self-synthesized SnO 2 nanoparticles (NPs) 4,4′-bipyridine is introduced as a multifunctional interface modifier at the SnO 2 /perovskite interface. Both experimental and DFT calculation results reveal that, the incorporation of 4,4′-bipyridine can simultaneously passivate interfacial defects from the SnO 2 surface and perovskite bottom surface. Moreover, it can also facilitate charge carrier transportation. Based on blade-coating technique for large area perovskite modules, this strategy significantly enhances the interfacial quality of large-area SnO 2 films and crystal quality of large-area perovskite layers. As a result, the champion small-area cell (0.076 cm 2 ) presents the efficiency of 25.75% while the minimodule (22.9 cm 2 aperture area) exhibits the efficiency of 23.50% with a certified efficiency of 22.70%. Both small-area devices and modules exhibited excellent operation and thermal stabilities, demonstrating that this interface treatment is a promising approach for large-scale production of high-efficiency perovskite modules.
研究领域:
材料科学
·
纳米技术
·
光伏技术
·
薄膜技术
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）