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25th Anniversary Article: Carbon Nanotube‐ and Graphene‐Based Transparent Conductive Films for Optoelectronic Devices 下载免费PDF全文
Jinhong Du Songfeng Pei Laipeng Ma Hui‐Ming Cheng 《Advanced materials (Deerfield Beach, Fla.)》2014,26(13):1958-1991
Carbon nanotube (CNT)‐ and graphene (G)‐based transparent conductive films (TCFs) are two promising alternatives for commonly‐used indium tin oxide‐based TCFs for future flexible optoelectronic devices. This review comprehensively summarizes recent progress in the fabrication, properties, modification, patterning, and integration of CNT‐ and G‐TCFs into optoelectronic devices. Their potential applications and challenges in optoelectronic devices, such as organic photovoltaic cells, organic light emitting diodes and touch panels, are discussed in detail. More importantly, their key characteristics and advantages for use in these devices are compared. Despite many challenges, CNT‐ and G‐TCFs have demonstrated great potential in various optoelectronic devices and have already been used for some products like touch panels of smartphones. This illustrates the significant opportunities for the industrial use of CNTs and graphene, and hence pushes nanoscience and nanotechnology one step towards practical applications. 相似文献
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Peng Wang Zhiwei Peng Muxiao Li YuHuang Wang 《Small (Weinheim an der Bergstrasse, Germany)》2018,14(38)
Flexible transparent conductors are an enabling component for large‐area flexible displays, wearable electronics, and implantable medical sensors that can wrap around and move with the body. However, conventional conductive materials decay quickly under tensile strain, posing a significant hurdle for functional flexible devices. Here, we show that high electrical conductivity, mechanical stretchability, and optical transparency can be simultaneously attained by compositing long metallic double‐walled carbon nanotubes with a polydimethylsiloxane substrate. When stretched to 100% tensile strain, thin films incorporating these long nanotubes (≈3.2 µm on average) achieve a record high conductivity of 3316 S cm?1 at 100% tensile strain and 85% optical transmittance, which is 194 times higher than that of short nanotube controls (≈0.8 µm on average). Moreover, the high conductivity can withstand more than 1000 repeated stretch‐release cycles (switching between 100% and 0% strain) with a retention approaching 96%, whereas the short nanotube controls exhibit only 10%. Mechanistic studies reveal that long tubes can bridge the microscale gaps generated during stretching, thereby maintaining high electrical conductivity. When mounted on human joints, this elastic transparent conductor can accommodate large motions to provide stable, high current output. These results point to transparent conductors capable of attaining high electrical conductivity and optical transmittance under mechanical strain to allow large shape changes that may take place in the operation and use of flexible electronics. 相似文献
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Continuous Fabrication of Meter‐Scale Single‐Wall Carbon Nanotube Films and their Use in Flexible and Transparent Integrated Circuits 下载免费PDF全文
Bing‐Wei Wang Song Jiang Qian‐Bing Zhu Yun Sun Jian Luan Peng‐Xiang Hou Song Qiu Qing‐Wen Li Chang Liu Dong‐Ming Sun Hui‐Ming Cheng 《Advanced materials (Deerfield Beach, Fla.)》2018,30(32)
Single‐wall carbon nanotubes (SWCNTs), especially in the form of large‐area and high‐quality thin films, are a promising material for use in flexible and transparent electronics. Here, a continuous synthesis, deposition, and transfer technique is reported for the fabrication of meter‐scale SWCNT thin films, which have an excellent optoelectrical performance including a low sheet resistance of 65 Ω/? with a transmittance of 90% at a wavelength of 550 nm. Using these SWCNT thin films, high‐performance all‐CNT thin‐film transistors and integrated circuits are demonstrated, including 101‐stage ring oscillators. The results pave the way for the future development of large‐scale, flexible, and transparent electronics based on CNT thin films. 相似文献
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Liwen Zhang Xin Wang Weizong Xu Yongyi Zhang Qingwen Li Philip D. Bradford Yuntian Zhu 《Small (Weinheim an der Bergstrasse, Germany)》2015,11(31):3830-3836
In order to maximize the carbon nanotube (CNT) buckypaper properties, it is critical to improve their alignment and reduce their waviness. In this paper, a novel approach, microcombing, is reported to fabricate aligned CNT films with a uniform structure. High level of nanotube alignment and straightness was achieved using sharp surgical blades with microsized features at the blade edges to comb single layer of CNT sheet. These microcombs also reduced structural defects within the film and enhanced the nanotube packing density. Following the microcombing approach, the as‐produced CNT films demonstrated a tensile strength of up to 3.2 GPa, Young's modulus of up to 172 GPa, and electrical conductivity of up to 1.8 × 105 S m?1, which are much superior to previously reported CNT films or buckypapers. More importantly, this novel technique requires less rigorous process control and can construct CNT films with reproducible properties. 相似文献
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Gonzalo Abelln Jose A. Carrasco Eugenio Coronado Juan P. Prieto‐Ruiz Helena Prima‐García 《Advanced Materials Interfaces》2014,1(6)
The synthesis of ultrathin films (UTFs) of NiFe‐LDHs has been achieved by means of an in situ hydrothermal approach, leading to a flat disposition of the LDH crystallites on the substrate, in clear contrast to the most common perpendicular orientation reported to date. Experimental factors like time of synthesis or the nature of the substrate, seem to play a crucial role during the growing process. The 2D morphology of the NiFe‐LDH crystallites was kept after a calcination procedure, leading to a topotactic transformation into mixed‐metal oxide platelets. Hereby, in order to study the catalytic behavior of our samples, a chemical vapor deposition process is explored upon the as‐synthesized films. In presence of a carbon source (ethylene), these films catalyze a preferential low‐temperature (550 °C) growth of bamboo‐like carbon nanotubes, in stark contrast to the different mixture of carbon nanoforms obtained from the bulk samples. This work opens the door for the development of UTFs based on LDHs, which may be of utmost importance in a wide range of potential applications ranging from magnetic storage, catalysis or biomedical applications, to electrochemical batteries, anti‐corrosion and superhydrophobic coatings. 相似文献
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Scalable Fabrication of Ambipolar Transistors and Radio‐Frequency Circuits Using Aligned Carbon Nanotube Arrays 下载免费PDF全文
Zhenxing Wang Shibo Liang Zhiyong Zhang Honggang Liu Hua Zhong Lin‐Hui Ye Sheng Wang Weiwei Zhou Jie Liu Yabin Chen Jin Zhang Lian‐Mao Peng 《Advanced materials (Deerfield Beach, Fla.)》2014,26(4):645-652
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