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Roll‐to‐Roll Production of Transparent Silver‐Nanofiber‐Network Electrodes for Flexible Electrochromic Smart Windows 下载免费PDF全文
Sen Lin Xiaopeng Bai Haiyang Wang Haolun Wang Jianan Song Kai Huang Chang Wang Ning Wang Bo Li Ming Lei Hui Wu 《Advanced materials (Deerfield Beach, Fla.)》2017,29(41)
Electrochromic smart windows (ECSWs) are considered as the most promising alternative to traditional dimming devices. However, the electrode technology in ECSWs remains stagnant, wherein inflexible indium tin oxide and fluorine‐doped tin oxide are the main materials being used. Although various complicated production methods, such as high‐temperature calcination and sputtering, have been reported, the mass production of flexible and transparent electrodes remains challenging. Here, a nonheated roll‐to‐roll process is developed for the continuous production of flexible, extralarge, and transparent silver nanofiber (AgNF) network electrodes. The optical and mechanical properties, as well as the electrical conductivity of these products (i.e., 12 Ω sq?1 at 95% transmittance) are comparable with those AgNF networks produced via high‐temperature sintering. Moreover, the as‐prepared AgNF network is successfully assembled into an A4‐sized ECSW with short switching time, good coloration efficiency, and flexibility. 相似文献
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Seongbeom Shin Minyang Yang L. Jay Guo Hongseok Youn 《Small (Weinheim an der Bergstrasse, Germany)》2013,9(23):4036-4044
This paper reports solution‐processed, high‐efficiency polymer light‐emitting diodes fabricated by a new type of roll‐to‐roll coating method under ambient air conditions. A noble roll‐to‐roll cohesive coating system utilizes only natural gravity and the surface tension of the solution to flow out from the capillary to the surface of the substrate. Because this mechanism uses a minimally cohesive solution, the roll‐to‐roll cohesive coating can effectively realize an ultra‐thin film thickness for the electron injection layer. In addition, the roll‐to‐roll cohesive coating enables the fabrication of a thicker polymer anode film more than 250 nm at one time by modification of the surface energy and without wasting the solution. It is observed that the standard sheet resistance deviation of the polymer anode is only 2.32 Ω/□ over 50 000 bending cycles. The standard sheet resistance deviation of the polymer anode in the different bending angles (0 to 180°) is 0.313 Ω/□, but the case of the ITO‐PET is 104.93 Ω/□. The average surface roughness of the polymer anode measured by atomic force microscopy is only 1.06 nm. Because the surface of the polymer anode has a better quality, the leakage current of the polymer light‐emitting diodes (PLEDs) using the polymer anode is much lower than that using the ITO‐PET substrate. The luminous power efficiency of the two devices is 4.13 lm/W for the polymer anode and 3.21 lm/W for the ITO‐PET. Consequently, the PLEDs made by using the polymer anode exhibited 28% enhanced performance because the polymer anode represents not only a higher transparency than the ITO‐PET in the wavelength of 560 nm but also greatly reduced roughness. The optimized the maximum current efficiency and power efficiency of the device show around 6.1 cd/A and 5.1 lm/W, respectively, which is comparable to the case of using the ITO‐glass. 相似文献
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Effect of Solvent Environment on Colloidal‐Quantum‐Dot Solar‐Cell Manufacturability and Performance 下载免费PDF全文
Ahmad R. Kirmani Graham H. Carey Maged Abdelsamie Buyi Yan Dongkyu Cha Lisa R. Rollny Xiaoyu Cui Edward H. Sargent Aram Amassian 《Advanced materials (Deerfield Beach, Fla.)》2014,26(27):4717-4723
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Xiaotian Hu Lie Chen Ting Ji Yong Zhang Aifeng Hu Feiyan Wu Gang Li Yiwang Chen 《Advanced Materials Interfaces》2015,2(17)
Despite nearly two decades of research, the absence of ideal, flexible, and transparent electrodes has been the biggest bottleneck for realizing flexible and printable electronics via roll‐to‐roll (R2R) method. A fabrication of poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate):graphene:ethyl cellulose (PEDOT:PSS:G:EC) hybrid electrodes by R2R process, which allows for the elimination of strong acid treatment. The high‐performance flexible printable electrode includes a transmittance (T) of 78% at 550 nm and a sheet resistance of 13 Ω sq−1 with excellent mechanical stability. These features arise from the PSS interacting strongly with the ethyoxyl groups from EC promoting a favorable phase separation between PEDOT and PSS chains, and the highly uniform and conductive G:EC enable rearrangement of the PEDOT chains with more expanded conformation surrounded by G:EC via the π–π interaction between G:EC and PEDOT. The hybrid electrodes are fully functional as universal electrodes for outstanding flexible electronic applications. Organic solar cells based on the hybrid electrode exhibit a high power conversion efficiency of 9.4% with good universality for active layer. Moreover, the organic light‐emitting diodes and photodetector devices hold the same level to or outperform those based on indium tin oxide flexible transparent electrodes. 相似文献
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Flexible Electrodes: Roll‐to‐Roll Production of Transparent Silver‐Nanofiber‐Network Electrodes for Flexible Electrochromic Smart Windows (Adv. Mater. 41/2017) 下载免费PDF全文
Sen Lin Xiaopeng Bai Haiyang Wang Haolun Wang Jianan Song Kai Huang Chang Wang Ning Wang Bo Li Ming Lei Hui Wu 《Advanced materials (Deerfield Beach, Fla.)》2017,29(41)
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Roll‐to‐Roll Production of Layer‐Controlled Molybdenum Disulfide: A Platform for 2D Semiconductor‐Based Industrial Applications 下载免费PDF全文
Yi Rang Lim Jin Kyu Han Seong Ku Kim Young Bum Lee Yeoheung Yoon Seong Jun Kim Bok Ki Min Yooseok Kim Cheolho Jeon Sejeong Won Jae‐Hyun Kim Wooseok Song Sung Myung Sun Sook Lee Ki‐Seok An Jongsun Lim 《Advanced materials (Deerfield Beach, Fla.)》2018,30(5)
A facile methodology for the large‐scale production of layer‐controlled MoS2 layers on an inexpensive substrate involving a simple coating of single source precursor with subsequent roll‐to‐roll‐based thermal decomposition is developed. The resulting 50 cm long MoS2 layers synthesized on Ni foils possess excellent long‐range uniformity and optimum stoichiometry. Moreover, this methodology is promising because it enables simple control of the number of MoS2 layers by simply adjusting the concentration of (NH4)2MoS4. Additionally, the capability of the MoS2 for practical applications in electronic/optoelectronic devices and catalysts for hydrogen evolution reaction is verified. The MoS2‐based field effect transistors exhibit unipolar n‐channel transistor behavior with electron mobility of 0.6 cm2 V?1 s?1 and an on‐off ratio of ≈10³. The MoS2‐based visible‐light photodetectors are fabricated in order to evaluate their photoelectrical properties, obtaining an 100% yield for active devices with significant photocurrents and extracted photoresponsivity of ≈22 mA W?1. Moreover, the MoS2 layers on Ni foils exhibit applicable catalytic activity with observed overpotential of ≈165 mV and a Tafel slope of 133 mV dec?1. Based on these results, it is envisaged that the cost‐effective methodology will trigger actual industrial applications, as well as novel research related to 2D semiconductor‐based multifaceted applications. 相似文献
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Roll‐to‐Roll Green Transfer of CVD Graphene onto Plastic for a Transparent and Flexible Triboelectric Nanogenerator 下载免费PDF全文
Bananakere Nanjegowda Chandrashekar Bing Deng Ankanahalli Shankaregowda Smitha Yubin Chen Congwei Tan Haixia Zhang Hailin Peng Zhongfan Liu 《Advanced materials (Deerfield Beach, Fla.)》2015,27(35):5210-5216
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Frederik C. Krebs Nieves Espinosa Markus Hösel Roar R. Søndergaard Mikkel Jørgensen 《Advanced materials (Deerfield Beach, Fla.)》2014,26(1):29-39
A solar park based on polymer solar cells is described and analyzed with respect to performance, practicality, installation speed, and energy payback time. It is found that a high voltage installation where solar cells are all printed in series enables an installation rate in Watts installed per minute that far exceed any other PV technology in existence. The energy payback time for the practical installation of polymer solar cell foil on a wooden 250 square meter platform in its present form is 277 days when operated in Denmark and 180 days when operated in southern Spain. The installation and de‐installation rate is above 100 m min?1, which, with the present performance and web width, implies installation of >200 W min?1. In comparison, this also exceeds the overall manufacturing speed of the polymer solar cell foil with a width of 305 mm which is currently 1 m min?1 for complete encapsulated and tested foil. It is also significant that simultaneous installation and de‐installation which enables efficient schemes for decommissioning and recycling is possible. It is highlighted where research efforts should most rationally be invested in order to make grid electricity from OPV a reality (and it is within reach). 相似文献
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Evaporation‐ and Solution‐Process‐Feasible Highly Efficient Thianthrene‐9,9′,10,10′‐Tetraoxide‐Based Thermally Activated Delayed Fluorescence Emitters with Reduced Efficiency Roll‐Off 下载免费PDF全文
Gaozhan Xie Xianglong Li Dongjun Chen Zhiheng Wang Xinyi Cai Dongcheng Chen Yunchuan Li Kunkun Liu Yong Cao Shi‐Jian Su 《Advanced materials (Deerfield Beach, Fla.)》2016,28(1):181-187
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Fr.‐ W. Bach D. Bormann M. Rodmann H. Haverkamp 《Materialwissenschaft und Werkstofftechnik》2008,39(9):588-593
Hybrid rolling as exemplified by titanium‐aluminium laminates Triple layered titanium‐aluminium laminates composed of titanium alloys TiAl6V4 (ASTM grade 5) and Ti 99.8 ASTM grade 1) together with the aluminium alloys AlMgSi 0.5 (EN‐AW 6060) and AlCuMg 1 (EN‐AW 2017) are manufactured by hot rolling and the deformation behaviour is investigated subject to alternating deformation parameters. The focus is the investigation of the differences between stepwise and continuous increases in true strain. True strains of 20 … 60 % are tested at temperatures from 400 … 500 °C. The contact zone of the manufactured laminates is then metallographically examined and the interlayer bond strength is mechanically tested. Torsion tests are presented for qualitatively determining the bond strength of the laminate. Bond forming already initiates at true strains of 35 % and temperatures of 350 °C within the rolling gap. 相似文献
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Influence of Shell Thickness on the Performance of Light‐Emitting Devices Based on CdSe/Zn1‐XCdXS Core/Shell Heterostructured Quantum Dots 下载免费PDF全文
Jaehoon Lim Byeong Guk Jeong Myeongjin Park Jai Kyeong Kim Jeffrey M. Pietryga Young‐Shin Park Victor I. Klimov Changhee Lee Doh C. Lee Wan Ki Bae 《Advanced materials (Deerfield Beach, Fla.)》2014,26(47):8034-8040
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Light‐Emitting Diodes: Highly Efficient Orange and Red Phosphorescent Organic Light‐Emitting Diodes with Low Roll‐Off of Efficiency using a Novel Thermally Activated Delayed Fluorescence Material as Host (Adv. Mater. 27/2015) 下载免费PDF全文
Hui Wang Lingqiang Meng Xingxing Shen Xiaofang Wei Xiuli Zheng Xiaopeng Lv Yuanping Yi Ying Wang Pengfei Wang 《Advanced materials (Deerfield Beach, Fla.)》2015,27(27):4104-4104
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Zheng‐Guang Wu Hua‐Bo Han Zhi‐Ping Yan Xu‐Feng Luo Yi Wang You‐Xuan Zheng Jing‐Lin Zuo Yi Pan 《Advanced materials (Deerfield Beach, Fla.)》2019,31(28)
Circularly polarized organic light‐emitting diodes (CP‐OLEDs) are particularly favorable for the direct generation of CP light, and they demonstrate a promising application in 3D display. However, up to now, such CP devices have suffered from low brightness, insufficient efficiency, and serious efficiency roll‐off. In this study, a pair of octahydro‐binaphthol ( OBN )‐based chiral emitting enantiomers, (R/S)‐OBN‐Cz , are developed by ingeniously merging a chiral source and a luminophore skeleton. These chirality–acceptor–donor (C–A–D)‐type and rod‐like compounds concurrently generate thermally activated delayed fluorescence with a small ΔEST of 0.037 eV, as well as a high photoluminescence quantum yield of 92% and intense circularly polarized photoluminescence with dissymmetry factors (|gPL|) of ≈2.0 × 10?3 in thin films. The CP‐OLEDs based on (R/S)‐OBN‐Cz enantiomers not only display obvious circularly polarized electroluminescence signals with a |gEL| of ≈2.0 × 10?3, but also exhibit superior efficiencies with maximum external quantum efficiency (EQEmax) up to 32.6% and extremely low efficiency roll‐off with an EQE of 30.6% at 5000 cd m?2, which are the best performances among the reported CP devices to date. 相似文献
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Highly Efficient Orange and Red Phosphorescent Organic Light‐Emitting Diodes with Low Roll‐Off of Efficiency using a Novel Thermally Activated Delayed Fluorescence Material as Host 下载免费PDF全文
Hui Wang Lingqiang Meng Xingxing Shen Xiaofang Wei Xiuli Zheng Xiaopeng Lv Yuanping Yi Ying Wang Pengfei Wang 《Advanced materials (Deerfield Beach, Fla.)》2015,27(27):4041-4047
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Frederik Kotz Norbert Schneider Andreas Striegel Andre Wolfschläger Nico Keller Matthias Worgull Werner Bauer Dieter Schild Marcel Milich Christian Greiner Dorothea Helmer Bastian E. Rapp 《Advanced materials (Deerfield Beach, Fla.)》2018,30(22)
Fused silica glass is one of the most important high‐performance materials for scientific research, industry, and society. However due to its high chemical and thermal resistance as well as high hardness, fused silica glass is notoriously difficult to structure. This work introduces Glassomer, a solid nanocomposite, which can be structured using polymer molding and subtractive technologies at submicrometer resolution. After polymer processing Glassomer is turned into optical grade fused silica glass during a final heat treatment. The resulting glass has the same optical transparency as commercial fused silica and a smooth surface with a roughness of a few nanometers. This work makes high‐performance fused silica glass components accessible to high‐throughput fabrication technologies and will enable numerous optical, photonic and medical applications in science and industry. 相似文献