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Nano-Micro Letters 2015年第1期7卷 51-58页

作者： Jun Wang Jinting Jiu Teppei Araki Masaya Nogi Tohru Sugahara Shijo Nagao Hirotaka Koga Peng He Katsuaki Suganuma State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology The Institute of Scientific and Industrial Research Osaka University

Transparent electrode based on silver nanowires(Ag NWs) emerges as an outstanding alternative of indium tin oxide film especially for flexible electronics. However, the conductivity of Ag NWs transparent electrode is still dramatically limited by the contact resistance between nanowires at high transmittance. Polyvinylpyrrolidone(PVP) layer adsorbed on the nanowire surface acts as an electrically insulating barrier at wire–wire junctions, and some devastating post-treatment methods are proposed to reduce or eliminate PVP layer, which usually limit the application of the substrates susceptible to heat or pressure and burden the fabrication with high-cost, time-consuming, or inefficient processes. In this work, a simple and rapid pre-treatment washing method was proposed to reduce the thickness of PVP layer from 13.19 to0.96 nm and improve the contact between wires. Ag NW electrodes with sheet resistances of 15.6 and 204 X sq-1have been achieved at transmittances of 90 and 97.5 %, respectively. This method avoided any post-treatments and popularized the application of high-performance Ag NW transparent electrode on more substrates. The improved Ag NWs were successfully employed in a capacitive pressure sensor with high transparency, sensitivity, and reproducibility.

关键词： silver nanowire Pre-treatment Transparent electrode Pressure sensor

Fabrication of high-quality silver nanowire conductive film and its application for transparent film heaters

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Journal of Materials Science & Technology 2021年第12期71卷 221-227页

作者： Boda Zheng Qingsheng Zhu Yang Zhao Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

Here,we report a facile method to produce pure silver nanowires(Ag NWs)with high yield.A highly conductive dispersant was used to ensure uniform dispersion of the Ag *** any posttreatment,the Ag NW networks,deposited on flexible substrates,showed excellent optoelectrical performance owing to minimal junction resistance between the Ag *** explore their potential in flexible optoelectronic devices,a transparent film heater was constructed based on the present Ag NW *** heater could achieve rapid response at low input voltage and reach a relatively high temperature in a short response *** this high-quality Ag NW film exhibits relatively low production costs and fast production time,it may have value for future electronic industry applications.

关键词： silver nanowire Optoelectrical performance Conductive film Transparent film heater Optoelectronic device

Patternable and transferable silver nanowire conductors via plasma-enhanced cryo-transferring process towards highly stretchable and transparent capacitive touch sensor array

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Nano Research 2023年第8期16卷 11303-11311页

作者： Yifan Gu Zhiguang Qiu Simu Zhu Hao Lu Lisha Peng Gaofan Zhang Ziyi Wu Xuchun Gui Zong Qin Bo-ru Yang State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510006China

Stretchable transparent electrode(STE)plays a key role in numerous emerging applications as an indispensable component for future stretchable *** embedded STE,as a promising candidate,possesses balanced performances and facile preparation ***,it still suffers from the defects of conductive materials caused by the transferring,which results in the irreversible failure of *** this work,a patternable silver nanowire(AgNW)STE was fabricated by a plasma-enhanced cryo-transferring(PEC-transferring)*** to the plasma-induced sintering,the AgNW network obtained remarkable improvement in robustness,which ensured the intact network after transferring and thus led to superior tensile electrical properties of the ***,serpentine patterns were utilized to optimize the tensile electrical properties of the STE,which achieved a figure of merit of 292.8 and 150%resistance changing under 50%*** a practical application,a 4×3 array of the mutual-capacitive type stretchable touch sensors was demonstrated for future touch sensors in stretchable *** PEC-transferring process opened a new avenue for patternable embedded STEs and exhibited its high potential in wearable electronics and the Internet of Thing devices.

关键词： stretchable transparent electrode silver nanowire plasma treatment transferring process serpentine

3D printing of high-performance micro-supercapacitors with patterned exfoliated graphene/carbon nanotube/silver nanowire electrodes

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Science China(Technological Sciences) 2021年第5期64卷 1065-1073页

作者： LIU Lang LU JunYong LONG XinLin ZHOU Ren LIU YingQuan WU YiTing YAN KangWei National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of EngineeringWuhan 430033China

Micro-supercapacitors(MSCs)show great potential as on-chip energy storage devices for portable *** major flaw of thin-film MSCs is their low energy *** improve the energy density,thicker electrodes are ***,the fabrication of MSCs with thick electrodes remains a *** this work,a novel 3D printing method is employed to fabricate high-performance MSCs with interdigitated exfoliated graphene(EG)/carbon nanotube(CNT)/silver nanowire(Ag NW)*** nanowelding of Ag NW junction plays a critical role in the realization of 3D *** enhance the electrochemical performances of EG,phosphorus atoms are incorporated into the carbon framework with 1.7 at%.The areal capacitance of the 3D printed MSC is 21.6 mF cm^(-2)at a scan rate of 0.01 V s^(-1).The areal energy density of the MSC ranges from 0.5 to 2μWh cm^(-2)with a maximum power density of 2.5 mW cm^(-2).

关键词： micro-supercapacitor 3D printing silver nanowire exfoliated graphene micro-plasma-jet

Adhesive aero-hydrogel hybrid conductor assembled from silver nanowire architectures

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Science China Materials 2021年第11期64卷 2868-2876页

作者： Zhao Pan Ze-Yu Wang Mo-Han Wang Lu Yang Shu-Hong Yu Division of Nanomaterials&Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleInstitute of EnergyHefei Comprehensive National Science CenterCAS Center for Excellence in NanoscienceDepartment of ChemistryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsUniversity of Science and Technology of ChinaHefei 230026China Stomatology Hospital&College Anhui Medical UniversityKey Laboratory of Oral Diseases Research of Anhui ProvinceHefei 230032China

Conductive and adhesive hydrogels are promising materials for designing *** satisfy the high conductivity of bioelectronic devices,metal nanomaterials have been used to fabricate composite ***,the fabrication of a conductive-nanomaterial-incorporated hydrogel with high performance is a great challenge because of the easy aggregation nature of conductive nanomaterials making processing ***,we report a kind of adhesive aero-hydrogel hybrid conductor(AAHC)with stretchable,adhesive and anti-bacteria properties by in situ formation of a hydrogel network in the aerogel-silver nanowires(AgNWs)*** AgNWs with good conductivity are wellintegrated on the inner-surface of shape-memory chitosan aerogel,which created a conductive framework to allow hydrogel *** by the aerogel-silver makes the hybrid hydrogel tough and *** groups from the hydrogel allow strong adhesion to wet tissues through molecular *** inherent bacteria-killing ability of silver ions endows the conductive hydrogel with excellent anti-bacteria *** proposed facile strategy of aerogel-assisted assembly of metal nanomaterials with hydrogel opens a new route to incorporate functional nanoscale building blocks into hydrogels.

关键词： silver nanowire chitosan aerogel templating assembly conductive hydrogel

Long-term stable silver nanowire transparent composite as bottom electrode for perovskite solar cells

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Nano Research 2018年第4期11卷 1998-2011页

作者： Yunxia Jin Yong Sun Kaiqing Wang Yani Chen Ziqi Liang Yuxi Xu Fei Xiao Department of Materials Science Fudan University 220 Handan Road Shanghai 200433 China Department of Macromolecular Science Fudan University 220 Handan Road Shanghai 200433 China

As the most promising alternative to traditional indium tin oxide （ITO）, silver nanowire （AgNW） composite transparent electrodes with improved stabilities compared with that of the pristine AgNWs networks have been demonstrated in various devices. However, a stable AgNW/polymer composite as the bottom electrode for perovskite solar cells has not yet been reported. Here, a long-term stable, smooth AgNW composite with an antioxidant-modified chitosan polymer was developed. The modified polymer can effectively protect pristine AgNWs from side reactions with perovskite, whereas it does not block the carrier drift through the interface of the insulating polymer. The as-prepared AgNW/polymer composite electrode exhibited a root mean square roughness below 10 nm at a scan size of 50 μm × 50 μm, and its original sheet resistance did not change obviously after aging at 85 ℃ for 40 days in air. As a result, the perovskite solar cell employing the composite as the bottom electrode yielded a power conversion efficiency of 7.9%, which corresponds to nearly 75% of that of the reference device with an ITO electrode.

关键词： silver nanowire ascorbic-acid-modified chitosan transparent composite electrode stability perovskite solar cell

Remote excitation and remote detection of a single quantum dot using propagating surface plasmons on silver nanowire

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Chinese Physics B 2014年第9期23卷 10-14页

作者：李强魏红徐红星 Institute of Physics Chinese Academy of Sciencesand Beijing National Laboratory for Condensed Matter Physics Center for Nanoscience and Nanotechnology and School of Physics and TechnologyWuhan University

Using propagating surface plasmons （SPs） on a silver nanowire （NW）, we demonstrate that a focused laser light at the end of the silver NW can excite a single quantum dot （QD） microns away from the excitation spot. The QD-NW interaction allows the excited QD convert part of its energy into propagating SPs, which then can be detected at remote sites. Simultaneous multi-QD remote excitation and remote detection can also be realized. Furthermore, the tight confinement of the propagating SPs around the NW surface enables the selective excitation of QDs very close in space, which cannot be realized under the conventional excitation condition. This remote excitation and remote detection approach may find applications in optical imaging and the sensing of chemical and biological systems.

关键词： surface plasmons silver nanowire quantum dot fluorescence

Fabrication of silver nanowire Transparent Electrodes at Room Temperature

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Nano Research 2011年第12期4卷 1215-1222页

作者： Takehiro Tokuno Masaya Nogi Makoto Karakawa Jinting Jiu Thi Thi Nge Yoshio Aso Katsuaki Suganuma The Institute of Scientific and Industrial Research （ISIR） Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan

silver nanowires （AgNWs） surrounded by insulating poly（vinylpyrrolidone） have been synthesized by a polyol process and employed as transparent electrodes. The AgNW transparent electrodes can be fabricated by heattreatment at about 200 ℃ which forms connecting junctions between AgNWs. Such a heating process is, however, one of the drawbacks of the fabrication of AgNW electrodes on heat-sensitive substrates. Here it has been demonstrated that the electrical conductivity of AgNW electrodes can be improved by mechanical pressing at 25 MPa for 5 s at room temperature. This simple process results in a low sheet resistance of 8.6 Ω/square and a transparency of 80.0%, equivalent to the properties of the AgNW electrodes heated at 200 ℃. This technique makes it possible to fabricate AgNW transparent electrodes on heat-sensitive substrates. The AgNW electrodes on poly（ethylene terephthalate） films exhibited high stability of their electrical conductivities against the repeated bending test. In addition, the surface roughness of the pressed AgNW electrodes is one-third of that of the heat-treated electrode because the AgNW junctions are mechanically compressed. As a result, an organic solar cell fabricated on the pressed AgNW electrodes exhibited a power conversion as much as those fabricated on indium tin oxide electrodes. These findings enable continuous roll-to-roll processing at room temperature, resulting in relatively simple, inexpensive, and scalable processing that is suitable for forthcoming technologies such as organic solar cells, flexible displays, and touch screens.

关键词： silver nanowire transparent electrode room temperature flexibility organic solar cell

Highly flexible and transparent conducting silver nanowire/ZnO composite film for organic solar cells

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Nano Research 2014年第9期7卷 1370-1379页

作者： Myungkwan Song Jong Hyun Park Chang Su Kim Dong-Ho Kim Yong-Cheol Kang Sung-Ho Jin Won-Yong Jin Jae-Wook Kang Surface Technology Division Korea Institute of Materials Science Changwon 641-831 Republic of Korea OLED Development Group LG Display Co. Ltd. Gyeonggi-do 413-811 Republic of Korea Department of Chemistry Pukyong National University 45 Yongso-ro Nam-Gu Busan 608-737 Republic of Korea Department of Chemistry Education Graduate Department of Chemical Materials and Institute for Plastic Information and Energy Materials Pusan National University Busan 609-735 Republic of Korea The Graduate School of Flexible and Printable Electronics Polymer Materials Fusion Research Center Chonbuk National University Jeonju 561-756 Republic of Korea

High efficiency and flexible inverted organic solar cells have been fabricated using solution-processed silver nanowire/zinc oxide composite transparent electrodes. The transparent electrodes showed a low sheet resistance of -13 ff）.sq-1 and high transmittance of -93% as well as superior mechanical flexibility. Power conversion efficiencies of -7.57% and -7.21% were achieved for devices fabricated on glass and plastic substrate, respectively. Moreover, the flexible devices did not show any degradation in their performance even after being folded with a radius of-480 μm.

关键词： silver nanowire flexible transparent conductingelectrode inverted organic solar cell

Optical haze of transparent and conductive silver nanowire films

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Nano Research 2013年第7期6卷 461-468页

作者： Colin Preston Yunlu Xu Xiaogang Han Jeremy N. Munday Liangbing Hu Department of Materials Science and Engineering University of Maryland College Park College Park Maryland 20742 USA Department of Electrical and Computer Engineering University of Maryland College Park Maryland 20742 USA The Institute for Research in Electronics and Applied Physics University of Maryland College Park Maryland 20742 USA

Contemporary nanostructured transparent electrodes for use in solar cells require high transmittance and high conductivity, dictating nanostructures with high aspect ratios. Optical haze is an equally important yet unstudied parameter in transparent electrodes for solar cells that is also determined by the geometry of the nanostructures that compose the electrode. In this work, the effect of the silver nanowire diameter on the optical haze values in the visible spectrum was investigated using films composed of wires with either small diameters （N60 nm） or large diameters （~150 nm）. Finite difference time domain （FDTD） simulations and experimental transmittance data confirm that smaller diameter nanowires form higher performing transparent conducting electrode （TCE） films according to the current figure of merit. While maintaining near constant transmittance and conductivity for each film, however, it was observed experimentally that films composed of silver nanowires with larger diameters have a higher haze factor than films with smaller diameters. This confirms the FDTD simulations of the haze factor for single nanowires with similarly large and small diameters. This is the first record of haze properties for Ag NWs that have been simulated or experimentally measured, and also the first evidence that the current figure of merit for TCEs is insufficient to evaluate their performance in solar cell devices.

关键词： solar cell transparent conducting electrode silver nanowire haze factor light trapping