Sublimation-assisted graphene transfer technique based on small polyaromatic hydrocarbons

Chen, Mingguang; Stekovic, Dejan; Li, Wangxiang; Arkook, Bassim; Haddon, Robert C.; Bekyarova, Elena

doi:10.1088/1361-6528/aa72d5

Cited by 24 publications

(19 citation statements)

References 38 publications

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“…To pick up long CNTs and release them on arbitrary substrates with minimum contamination, we use thin and large-area organic crystals that do not require wet processes or high-temperature treatments. Anthracene, which consists of three benzene rings, meets such requirements 22 , 23 . We expect the similarity of molecular structure between anthracene and CNTs to lead to strong π – π interactions 24 , possibly improving the efficiency of picking up CNTs from the growth substrates.…”

Section: Resultsmentioning

confidence: 99%

Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology

et al. 2021

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When continued device scaling reaches the ultimate limit imposed by atoms, technology based on atomically precise structures is expected to emerge. Device fabrication will then require building blocks with identified atomic arrangements and assembly of the components without contamination. Here we report on a versatile dry transfer technique for deterministic placement of optical-quality carbon nanotubes. Single-crystalline anthracene is used as a medium which readily sublimes by mild heating, leaving behind clean nanotubes and thus enabling bright photoluminescence. We are able to position nanotubes of a desired chirality with a sub-micron accuracy under in-situ optical monitoring, thereby demonstrating deterministic coupling of a nanotube to a photonic crystal nanobeam cavity. A cross junction structure is also designed and constructed by repeating the nanotube transfer, where intertube exciton transfer is observed. Our results represent an important step towards development of devices consisting of atomically precise components and interfaces.

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Section: Resultsmentioning

confidence: 99%

Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology

et al. 2021

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“…A study of the role of different support layers showed that low-molecular-weight polymers-based support material are preferable than high-molecular weight polymer support layers for clean and contamination-free transfer; e.g., poly(bisphenol A carbonate) is superior to PMMA [36]. Similarly, another group proposed the use of naphthalene as a small-molecular support layer [37], where naphthalene showed [16] Copper foil Ferric chloride solution 1 mol•L −1 [39] Copper foil Ferric chloride solution 2 mol•L −1 [21] Copper foil H2O2:HCl…”

Section: Wet Transfermentioning

confidence: 99%

Graphene transfer methods: A review

et al. 2021

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Graphene is a material with unique properties that can be exploited in electronics, catalysis, energy, and bio-related fields. Although, for maximal utilization of this material, high-quality graphene is required at both the growth process and after transfer of the graphene film to the application-compatible substrate. Chemical vapor deposition (CVD) is an important method for growing high-quality graphene on non-technological substrates (as, metal substrates, e.g., copper foil). Thus, there are also considerable efforts toward the efficient and non-damaging transfer of quality of graphene on to technologically relevant materials and systems. In this review article, a range of graphene current transfer techniques are reviewed from the standpoint of their impact on contamination control and structural integrity preservation of the as-produced graphene. In addition, their scalability, cost- and time-effectiveness are discussed. We summarize with a perspective on the transfer challenges, alternative options and future developments toward graphene technology.

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“…However, the presence of D peaks in the Raman spectra of transferred graphene indicates that the film was damaged during transfer, which might be related to its relatively low mechanical strength. Similarly, polycyclic aromatic hydrocarbons such as naphthalene and pentacene also allow clean transfer as sublimable supporting layers . The weak interaction of pentacene with graphene is crucial as it would not change the band structure and Fermi level of graphene with negligible charge transfer doping .…”

Section: Etching Transfermentioning

confidence: 99%

Transfer Methods of Graphene from Metal Substrates: A Review

Ren

Cheng

2019

Small Methods

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Graphene synthesized by chemical vapor deposition (CVD) on metal substrates has attracted tremendous attention due to its high growth‐quality, scalability, and high structural tunability, which holds great promise in a wide range of applications. In most cases, CVD graphene on metals must be transferred to target substrates and the intact/clean and efficient transfer of large‐area graphene remains challenging, thus greatly hindering the practical applications of CVD‐grown graphene in high‐performance devices. Here, the representative methods of transferring CVD graphene are discussed from the perspective of their impacts on the structural integrity and contamination of graphene as well as their scalability. Particularly, the principles, advantages, and limitations are highlighted in various methods.

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Sublimation-assisted graphene transfer technique based on small polyaromatic hydrocarbons

Cited by 24 publications

References 38 publications

Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology

Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology

Graphene transfer methods: A review

Transfer Methods of Graphene from Metal Substrates: A Review

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