ACS Applied Materials & Interfaces
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2014
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IF 5.9
Yunxia Jin,Yuanrong Cheng,Dunying Deng,Chengjie Jiang,Tianke Qi,Donglun Yang,Fei Xiao
Metal transparent conductive films (TCFs) have received increasing attention in various flexible electronics. However, there are two crucial issues that need to be addressed: (1) strong adhesion between metal TCFs and the flexible substrates and (2) high conductivity with short treatment time and low process temperature, simultaneous with high transparency. In this paper, a site-selective electroless plating combination with poly(dopamine) modification is demonstrated to fabricate a new high performance transparent conductor composed of a periodic two-dimensional silver network on a heat sensitive flexible substrate at room temperature. The TCF reveals an extremely high ratio of DC to optical conductivity (σDC/σOp) value in the range of 350–1000 for various fabricated silver grid films. It also exhibits particularly strong adhesion, which can resist ultrasonic treatment in water or organic solvent for several hours. Its reliability (stable for at least 1440 h during 85 °C/85% RH aging) meets the essential requirements for microelectronic applications. Using this method, we obtain silver grid film on a flexible polyethylene terephthalate substrate with optical transmittance of 91% and sheet resistance of 8 Ohm sq–1, which is comparable to or better than the commercially available indium tin oxide.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2025
·
IF 14.1
Zhuo Chen,Tianyu Liu,Irfan Ismail,Fan Qian,Lianping Zhang,Shutao Yang,Xiaoke Zhang,Lingpeng Yan,Yunfei Han,Qun Luo,Yongzhen Yang,Chang-Qi Ma
The conductivity of AgNWs electrodes can be enhanced by incorporating Ag grids, thereby facilitating the development of large-area flexible organic solar cells (FOSCs). Ag grids from vacuum evaporation offer the advantages of simple film formation, adjustable thickness, and unique structure. However, the complex 3D multi-component structure of AgNWs electrodes will exacerbate the aggregation of large Ag particles, causing the device short circuits. To address this issue, the relationship between the surface energy of modification layers and the morphology and conductivity of ultrathin Ag on AgNWs is studied. The amorphous ZnO (α-ZnO) layer promotes Ag growth from Volmer–Weber (VW) to Frank–Van der Merwe (FM), reducing particle aggregation. The 1 µm thick PET/AgNWs/Ag grid electrode with α-ZnO exhibited low contact resistance and high conductivity. As a result, 1 cm 2 FOSCs with Ag grids achieve a power conversion efficiency (PCE) of 16.01%. As the area increased to 4 and 9 cm 2 , the performance of the monolithic FOSCs is 14.70% and 12.69%, showing less efficiency loss during upscaling. The 8 and 16 cm 2 modules constructed by series and parallel connection of the monolithic devices yield PCEs of 14.47% and 12.92%, respectively. This study offers valuable insights into constructing Ag grids on AgNWs electrodes for highly efficient large-area FOSCs.
研究领域:
材料科学
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能源科学
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光电技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 34
·2304990
·
IF 15.1
Siqing Yuan,Zebin Fan,Guangji Wang,Zhimin Chai,Tongqing Wang,Dewen Zhao,Ahmed A. Busnaina,Xinchun Lu
Transparent conductive electrodes (TCEs) are indispensable components of various optoelectronic devices such as displays, touch screen panels, solar cells, and smart windows. To date, the fabrication processes for metal mesh-based TCEs are either costly or having limited resolution and throughput. Here, a two-step surface energy-directed assembly (SEDA) process to efficiently fabricate high resolution silver meshes is introduced. The two-step SEDA process turns from assembly on a functionalized substrate with hydrophilic mesh patterns into assembly on a functionalized substrate with stripe patterns. During the SEDA process, a three-phase contact line pins on the hydrophilic pattern regions while recedes on the hydrophobic non-pattern regions, ensuring that the assembly process can be achieved with excellent selectivity. The necessity of using the two-step SEDA process rather than a one-step SEDA process is demonstrated by both experimental results and theoretical analysis. Utilizing the two-step SEDA process, silver meshes with a line width down to 2 µm are assembled on both rigid and flexible substrates. The thickness of the silver meshes can be tuned by varying the withdraw speed and the assembly times. The assembled silver meshes exhibit excellent optoelectronic properties (sheet resistance of 1.79 Ω/□, optical transmittance of ≈92%, and a FoM value of 2465) as well as excellent mechanical stability. The applications of the assembled silver meshes in touch screen panels and thermal heaters are demonstrated, implying the potential of using the two-step SEDA process for the fabrication of TCEs for optoelectronic applications.
研究领域:
材料科学
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光学工程
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 40
·19584-19589
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IF 9.931
Zijie Xu,Weifeng Li,Jiani Huang,Qian Liu,Xing Guo,Wenxi Guo,Xiangyang Liu
Electrochromic devices (ECDs) presenting reversible color variation are considered as the most promising alternative to traditional smart windows. However, the fabrication of large-scale ECDs with high flexibility and stability is still challenging. In this work, we present a crackle pattern technology for controllable and large-scale fabrication of rectangular Ag network films for indium tin oxide-free (ITO-free) flexible ECDs. This rectangular Ag film exhibits superior mechanical robustness and controllable optoelectronic performance (2.0 Ω sq−1 at 91% transmittance). In the application of WO3 based ECD, the rectangular film presents an ultrafast switching time (0.25/0.18 s for bleaching/coloring) and is thus applicable in flexible displays. Moreover, this device demonstrates a large optical modulation of 76% at 630 nm and sustains 78.9% of its initial modulation even after 20 000 cycles, which is close to the commercial standard for rigid ECDs. The obtained rectangular Ag films are successfully assembled into a flexible all-solid-state ECD (21 × 13 cm2), which can be utilized in smart windows, glasses and other fields that require bending or cutting.
研究领域:
材料科学
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纳米技术
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电子工程
✓ 已验证
DOI
高影响因子
ORGANIC ELECTRONICS
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2019
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IF 3.495
Huanyu Zhou,Houdong Mao,Xiangchuan Meng,Qingxia Wang,Licheng Tan,Yiwang Chen
Among recent explorations of flexible transparent electrodes (FTEs) applied in photoelectric devices, Ag nanowires (AgNWs) are widely used due to the advantages of high conductivity, large-scale manufacture and superior flexibility. However, relatively high roughness and contact resistance at junctions of Ag nanowire electrodes still affect the optoelectronic performance. Herein, adopting the ultraviolet nanoimprint lithography technology, the flexible Ag grids-based electrode without contact junctions has been prepared by electrolessly depositing metallic Ag on the exposed polydopamine (PDA) through coordination-bond interactions, which shows better flexibility and interfacial adhesion with comparison to the commercial PET/ITO. The light-emitting diode lamp bulb connected with PET/PDA@Ag grids electrode is still brilliantly lit after 200 continuous bending cycles with radius of 3 mm, suggesting robust mechanical stability . In addition, the PET/PDA@Ag grids-based polymer solar cells yield a power conversion efficiency of 11.6%.
研究领域:
材料科学
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光电设备
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纳米技术
✓ 已验证
DOI
高影响因子
IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2025
·
IF 3.2
Yingjie Liao,Keqin Xie,Jinlong Wu,Ning Zhao,Yang Lin,Wei Shi,Bin Wei,Weixia Lan,Yuanyuan Liu
The performance of organic solar cells (OSCs), particularly flexible semi-transparent OSCs (ST-OSCs), is often limited by the use of indium tin oxide (ITO) electrodes, which are prone to cracking under bending and thus compromise device performance. This study introduces a novel silver mesh electrode (Ag-mesh) as a substitute for ITO in ST-OSCs. The Ag-mesh electrodes demonstrated optimal performance at a thermal imprinting temperature of 130 ∘C, with minimal line breakage and preserved optoelectronic properties. Compared to ITO electrodes, ST-OSCs with Ag-mesh electrodes showed superior mechanical stability, retaining over 90% of their initial performance after 1000 bending cycles, and an impressive retention of nearly 87% of their initial power conversion efficiency (PCE). The devices based on Ag-mesh electrodes also exhibited higher fill factor (FF) and better light response, aligning with higher conductivity and transmittance of the Ag-mesh electrodes. This research offers a significant contribution to the field by providing a durable and efficient alternative to ITO electrodes in flexible ST-OSCs. The Ag-mesh electrodes not only match but exceed the performance of ITO electrodes in terms of efficiency and stability, marking a substantial step forward in the development of flexible and semi-transparent solar cell technology.
研究领域:
材料科学
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可再生能源
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2019
·
IF 6.277
Teng Li,Shengyou Li,Xuyi Li,Zijie Xu,Jizhong Zhao,Yating Shi,Yanan Wang,Rui Yu,Xiangyang Liu,Qingchi Xu,Wenxi Guo
As essential components of numerous flexible and wearable optoelectronic devices, the flexible transparent conducting electrodes (TCEs) with sufficient optical transmittance and electric conductivity become more and more important. In this work, we fabricated a large-area flexible TCE based on leaf vein-like hierarchical metal grids (HMG) comprising of mesoscale “trunk” and microscale “branches”. The self-formed branched grids made the conducting paths distributing uniformly while the laser-etching trunk grids enabled to transport the collected electrons across long-distance. The Ag HMG exhibited high optical transmittance (~81%) with low sheet resistance (1.36 Ω sq –1 ), which could be simply optimized through adjusting the grids’ widths, spaces, and the sizes of the TiO 2 colloidal crackle patterns. In addition, on the basis of such advanced HMG electrode, flexible electrochromic devices (ECDs) with remarkable cyclic performance were fabricated. The HMG with high transparency, conductivity, and flexibility provides a promising TCE for the next-generation flexible and wearable optoelectronic devices.
研究领域:
材料科学
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纳米科技
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柔性电子学
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光电子学
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表面工程
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功能材料
·
智能窗口技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）