Synthesis of large-area graphene films on rolled-up Cu foils by a “breathing” method

Wang, Yue; Qing, Fangzhu; Jia, Yi; Duan, Yinwu; Shen, Changqing; Hou, Yuting; Niu, Yuting; Shi, Haofei; Li, Xuesong

doi:10.1016/j.cej.2020.127014

Cited by 22 publications

(12 citation statements)

References 34 publications

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“…Due to the advantages of low cost, simple preparation process, strong controllability, and mass production, together with the obvious catalytic effect of a metal substrate on graphene growth, the CVD method has become the mainstream method for the preparation of large-area, high-quality graphene on metal substrates and has been developed to a relatively mature stage. [34][35][36][37][38][39][40][41][42][43][44][45][46][47][178][179][180][181][182][183][184][185] However, the CVD growth strategy of Gr-PCFs is challenging due to the lack of a metal catalyst and the difficulty in gas flow control along the long micrometer-sized holes in a silica PCF. The successful growth of Gr-PCFs benefits from extensive experience in the CVD growth of graphene glass/ insulator substrates.…”

Section: The Growth Of Graphene On Glassmentioning

confidence: 99%

The Rise of Graphene Photonic Crystal Fibers

Zhou

Deng

et al. 2022

Adv Funct Materials

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2D graphene with tremendous novel properties is an ideal material for optical and optoelectronic applications. Meanwhile, photonic crystal fibers (PCFs) have been recognized as next-generation optical fibers that possess a designable porous structure, rich functions, and different working mechanisms. Recently, the integration of graphene with a PCF has formed a new hybrid fiber, a graphene photonic crystal fiber (Gr-PCF), which exhibits an extremely strong and tunable light-matter interaction across a broadband spectrum range and opens up a new interdisciplinary research direction. In this review, recent studies on, and achievements in graphene-traditional fibers and Gr-PCFs have been summarized from the aspects of the development process, preparation method, and device application. First, the graphene properties and the development and characteristics of PCFs are introduced. The discussion is continued with the existing fabrication technologies for hybrid graphene-traditional fibers. Next, the chemical vapor deposition method for Gr-PCFs is elaborated. Then, fiber devices based on graphene-traditional fibers, Gr-PCFs, and other 2D material fibers are presented. To conclude, challenges and perspectives are presented to encourage advanced Gr-PCF study.

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Section: The Growth Of Graphene On Glassmentioning

confidence: 99%

The Rise of Graphene Photonic Crystal Fibers

Zhou

Deng

et al. 2022

Adv Funct Materials

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“…For a long time, CVD was considered to be the most promising method for preparing large-area high-quality graphene films. However, as the size of the reactor increases, there are significant increases in manufacturing difficulties and the cost of CVD reactors, which in turn lead to limitations on the size and throughput of graphene films [ 39 ]. In addition, the high-temperature CVD growth of graphene is accompanied by some side reactions, leading to a large amount of amorphous carbon contaminants being deposited on the surface of graphene, leading to “intrinsic pollution” of the graphene film, which seriously affects the performance of graphene.…”

Section: Two-dimensional Graphenementioning

confidence: 99%

“…Currently, there is still a large discrepancy between the measured performance of graphene films and the values expected from theory, indicating that research is required to improve the performance of graphene films [ 40 , 41 ]. Wang et al [ 39 ] reported a “breathing” CVD method, in which a spiral Cu foil as substrate is employed to increase the loading density. In this process, graphite spacers are placed between the Cu layers at both ends of the spiral to prevent the Cu layers from adhering together at high temperature.…”

Section: Two-dimensional Graphenementioning

confidence: 99%

Recent Progress on Graphene Flexible Photodetectors

Wang

Xiao

et al. 2022

Materials

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In recent years, optoelectronics and related industries have developed rapidly. As typical optoelectronics devices, photodetectors (PDs) are widely applied in various fields. The functional materials in traditional PDs exhibit high hardness, and the performance of these rigid detectors is thus greatly reduced upon their stretching or bending. Therefore, the development of new flexible PDs with bendable and foldable functions is of great significance and has much interest in wearable, implantable optoelectronic devices. Graphene with excellent electrical and optical performance constructed on various flexible and rigid substrates has great potential in PDs. In this review, recent research progress on graphene-based flexible PDs is outlined. The research states of graphene conductive films are summarized, focusing on PDs based on single-component graphene and mixed-structure graphene, with a systematic analysis of their optical and mechanical performance, and the techniques for optimizing the PDs are also discussed. Finally, a summary of the current applications of graphene flexible PDs and perspectives is provided, and the remaining challenges are discussed.

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“…To address the issue, the Li group developed a strategy of rolling copper in a vertical direction to realize the growth of the meter level (1.1 m × 0.25 m) graphene film in a 2 inches diameter CVD reactor. 118 During this process, the Cu foil was rolled into a spiral shape and loaded vertically, and the gas was introduced in a breathing way through repeatedly increasing and decreasing the pressure inside the reactor. By means of this method, the throughput of materials including other 2D materials could be improved with little influence from the size of the CVD reactor.…”

Section: Perspective and Prospectsmentioning

confidence: 99%