Flexible and Transparent Electrothermal Film Heaters Based on Graphene Materials

Sui, Dong; Huang, Yi; Huang, Lu; Liang, Jiajie; Ma, Yanfeng; Chen, Yongsheng

doi:10.1002/smll.201101305

Cited by 383 publications

(285 citation statements)

References 40 publications

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“…Quartz wafers, spin-coated by graphene oxide (GO) and annealed at a high-temperature (e.g. 1000 °C), exhibited a high-transparency, and showed great potential as heating, defrosting and antifogging devices [22]. The batch production of large-area, uniform graphene films on solid glass was realized by a catalyst-free atmospheric-pressure CVD approach [23].…”

Section: Introductionmentioning

confidence: 99%

Structure of graphene and its disorders: a review

Gao

Lee

et al. 2018

Science and Technology of Advanced Materials

445

181

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Monolayer graphene exhibits extraordinary properties owing to the unique, regular arrangement of atoms in it. However, graphene is usually modified for specific applications, which introduces disorder. This article presents details of graphene structure, including sp2 hybridization, critical parameters of the unit cell, formation of σ and π bonds, electronic band structure, edge orientations, and the number and stacking order of graphene layers. We also discuss topics related to the creation and configuration of disorders in graphene, such as corrugations, topological defects, vacancies, adatoms and sp3-defects. The effects of these disorders on the electrical, thermal, chemical and mechanical properties of graphene are analyzed subsequently. Finally, we review previous work on the modulation of structural defects in graphene for specific applications.

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Section: Introductionmentioning

confidence: 99%

Structure of graphene and its disorders: a review

Gao

Lee

et al. 2018

Science and Technology of Advanced Materials

445

181

View full text Add to dashboard Cite

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“…The exceptional optoelectrical and thermal properties of graphene offer many advantages for producing transparent heaters [47]. It is suggested that the CVD-grown large-scale graphene films could be used for the fabrication of transparent heaters [45,47]. As illustrated in Fig.…”

Section: Transparent Heatersmentioning

confidence: 99%

“…Due to a wide range of applications including outdoor displays, vehicle window defrosters, heating retaining windows, and other heating systems, transparent and flexible film heaters have attracted growing interest [45,46]. Although ITO has been widely used to prepare transparent heating films, the drawbacks of ITO, including limited availability of indium, intolerance to acid or base and fragility under mechanical bending, limit its future applications [12].…”

Section: Transparent Heatersmentioning

confidence: 99%

Application of Graphene-Based Transparent Conductors (TCs)

Zheng

Kim

2015

Graphene for Transparent Conductors

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As graphene has several potential advantages over indium tin oxide (ITO) including weight, robustness , flexibility, chemical stability, and cost, many applications, such as touch panels, displays, solar cells, organic light-emitting diode, transistors and other new areas, have been demonstrated [1]. Although the application of graphene for transparent conductors (TCs) is still in its early stage and the performances of some devices presented in this book are in a preoptimized state, the unique functional characteristics can make graphene a strong candidate to replace the currently commercially dominant TC materials [2]. These devices, with their functional, structural, and mechanical requirements, where graphene has been considered to apply are discussed in this chapter. Touch ScreenA touch screen is an electronic visual display that detects the presence and location of a touch [2]. A variety of touch-screen technologies, such as resistive, surface acoustic wave, capacitive, surface capacitance, projected capacitance, has been developed [3]. The most commonly used touch screens are the resistive and capacitive types, which require a sheet resistance of ~ 300-1500 Ω/sq at a transparency of ~ 86-90 % [4]. Graphene has several advantages including flexibility, wear resistance, chemical durability, and low toxicity (Fig. 5.1a-b) compared to the traditional ITO. Based on the successful fabrication of graphene films, with outstanding sheet resistance and transparency, and a large size of tens of centimeters, Bae et al.[5] incorporated them into touch-screen panel devices (Fig. 5.1b). It is revealed that the touch-screen display made from graphene outperformed that of ITO in terms of the applied strain. The former touch screen could handle twice as much strain as conventional ITO-based devices (Fig. 5.1c) [5]. The graphene-based panel resisted up to 6 % strain, which is limited mainly by the silver electrode and not by graphene itself, while the ITO-based touch panel easily broke at just 2-3 % strain.

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“…The resistance of graphene synthesized by chemical vapor deposition (CVD), the acknowledged well‐suited method for growing large‐area and high quality graphene, can low to several hundreds of Ω sq –1 on nickel (Ni) and copper (Cu) 7. For the graphene prepared by another common used methods, chemical and thermal methods, the sheet resistance of reduced graphene oxide (rGO) can reduce to ≈640 Ω sq –1 after thermal annealing at 1000 °C 8. When used in practical applications, these graphene films exhibited better performance than other metal conductive materials and carbon materials.…”

Section: Properties and Preparationmentioning

confidence: 99%

Human‐Like Sensing and Reflexes of Graphene‐Based Films

et al. 2016

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Humans have numerous senses, wherein vision, hearing, smell, taste, and touch are considered as the five conventionally acknowledged senses. Triggered by light, sound, or other physical stimulations, the sensory organs of human body are excited, leading to the transformation of the afferent energy into neural activity. Also converting other signals into electronical signals, graphene‐based film shows its inherent advantages in responding to the tiny stimulations. In this review, the human‐like senses and reflexes of graphene‐based films are presented. The review starts with the brief discussions about the preparation and optimization of graphene‐based film, as where as its new progress in synthesis method, transfer operation, film‐formation technologies and optimization techniques. Various human‐like senses of graphene‐based film and their recent advancements are then summarized, including light‐sensitive devices, acoustic devices, gas sensors, biomolecules and wearable devices. Similar to the reflex action of humans, graphene‐based film also exhibits reflex when under thermal radiation and light actuation. Finally, the current challenges associated with human‐like applications are discussed to help guide the future research on graphene films. At last, the future opportunities lie in the new applicable human‐like senses and the integration of multiple senses that can raise a revolution in bionic devices.

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Flexible and Transparent Electrothermal Film Heaters Based on Graphene Materials

Cited by 383 publications

References 40 publications

Structure of graphene and its disorders: a review

Structure of graphene and its disorders: a review

Application of Graphene-Based Transparent Conductors (TCs)

Human‐Like Sensing and Reflexes of Graphene‐Based Films

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