Laser-induced phenylation reaction to prepare semiconducting single-walled carbon nanotube arrays

Wang, Ying; Wang, Jiacheng; Ding, Chao; Zhang, Hongjie; Du, Ran; Zhang, Shuchen; Qian, Jinjie; Hu, Yue; Huang, Shaoming

doi:10.1039/d0cc06095j

Cited by 4 publications

(5 citation statements)

References 26 publications

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“…An excellent rectifying property appears when V g is higher than −1.5 V (the curve of the FET fabricated on pure s-SWCNT arrays, see Figure S11). All the results suggest that the as-made devices are of good quality. − …”

Section: Discussionmentioning

confidence: 88%

Toward an Intelligent Synthesis: Monitoring and Intervening in the Catalytic Growth of Carbon Nanotubes

et al. 2021

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The bottom-up approach to directly synthesizing low-dimensional materials with outstanding performance has extended the material basis for the next generation integrated circuit industry. All the low-dimensional semiconductors, metals, dielectrics, and their heterojunctions are very promising bricks to build faster and more efficient chips because of their atomically smooth surface and interfaces. The greatest challenge in the synthesis of nanomaterials is how to precisely control the structure, crystalline orientation, defects, dimensions, etc. In past decades, both the methodology and the mechanism of synthesis have been systematically investigated to improve the controllability. However, few studies focused on sensing the synthesis processes in situ and responding to the synthesis immediately. Here, we propose the concept of intelligent synthesis in which the final product can be automatically fine-controlled by a closed loop including in situ monitoring and real-time interventions. As a model system, a high-temperature-tolerant circuit is fabricated on the single-walled carbon nanotube (SWCNT) growth substrate for sensing and responding to the synthesis processes. As a result, either highly pure semiconducting (s-) SWCNT arrays or metallic-semiconducting (m-s) junction arrays with different junction positions is simply synthesized by programming the responding signal. The intelligent synthesis shows much higher efficiency and controllability compared to conventional methods and will lead to the next leap in nanotechnology.

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Section: Discussionmentioning

confidence: 88%

Toward an Intelligent Synthesis: Monitoring and Intervening in the Catalytic Growth of Carbon Nanotubes

et al. 2021

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“…In addition, the annealing can induce a healing process of structural defects. For example, the relationship between vacancies and annealing was studied in single-walled carbon nanotubes, where the semiconducting properties of the field-effect transistor device were improved [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Strong Room-Temperature Ferromagnetism of MoS2 Compound Produced by Defect Generation

Park,

Kwon,

Kim

et al. 2024

Nanomaterials

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Ferromagnetic materials have been attracting great interest in the last two decades due to their application in spintronics devices. One of the hot research areas in magnetism is currently the two-dimensional materials, transition metal dichalcogenides (TMDCs), which have unique physical properties. The origins and mechanisms of transition metal dichalcogenides (TMDCs), especially the correlation between magnetism and defects, have been studied recently. We investigate the changes in magnetic properties with a variation in annealing temperature for the nanoscale compound MoS2. The pristine MoS2 exhibits diamagnetic properties from low-to-room temperature. However, MoS2 compounds annealed at different temperatures showed that the controllable magnetism and the strongest ferromagnetic results were obtained for the 700 °C-annealed sample. These magnetizations are attributed to the unpaired electrons of vacancy defects that are induced by annealing, which are confirmed using Raman spectroscopy and electron paramagnetic resonance spectroscopy (EPR).

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“…Great efforts have been devoted to developing a controlled preparation process for high‐purity s‐SWCNTs. There are mainly two pathways to achieve this goal so far: [ 6,13 ] 1) post‐synthesis sorting, [ 14–17 ] and 2) direct synthesis. [ 18–20 ] The sorting methods mainly include density gradient ultracentrifugation, [ 14 ] column chromatography, [ 15 ] ion exchange chromatography, [ 16 ] and conjugated polymer extraction.…”

Section: Introductionmentioning

confidence: 99%

Direct Synthesis of Semiconducting Single‐Walled Carbon Nanotubes Toward High‐Performance Electronics

Liu,

Khan,

Ding

et al. 2023

Adv Elect Materials

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The large‐scale synthesis of high‐purity semiconducting single‐walled carbon nanotubes (s‐SWCNTs) plays a crucial role in fabricating high‐performance and multiapplication‐scenario electronics. This work develops a straightforward, continuous, and scalable method to synthesize high‐purity and individual s‐SWCNTs with small‐diameters distribution (≈1 nm). It is believed that the water and carbon dioxide resulting from the decomposition of isopropanol act as oxidizing agents and selectively etch metallic SWCNTs, hence enhancing the production of s‐SWCNTs. The performance of individual‐SWCNTs field effect transistors confirms the high abundance of s‐SWCNTs, presenting a mean mobility of 376 cm2 V−1 s−1 and a high mobility of 2725 cm2 V−1 s−1 with an on‐current to off‐current (Ion/Ioff) ratio as high as 2.51 × 107. Moreover, thin‐film transistors based on the as‐synthesized SWCNTs exhibit excellent performance with a mean mobility of 9.3 cm2 V−1 s−1 and Ion/Ioff ratio of 1.3× 105, respectively, verifying the enrichment of s‐SWCNTs. This work presents a simple and feasible route for the sustainable synthesis of high‐quality s‐SWCNTs for electronic devices.

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Laser-induced phenylation reaction to prepare semiconducting single-walled carbon nanotube arrays

Abstract: Single-walled carbon nanotubes (SWNTs) arrays are the key to making integrated circuits smaller than 10 nanometers. Herein, a brand-new approach is proposed to efficiently prepare semiconducting (s-) SWNT arrays by...

Cited by 4 publications

References 26 publications

Toward an Intelligent Synthesis: Monitoring and Intervening in the Catalytic Growth of Carbon Nanotubes

Toward an Intelligent Synthesis: Monitoring and Intervening in the Catalytic Growth of Carbon Nanotubes

Strong Room-Temperature Ferromagnetism of MoS2 Compound Produced by Defect Generation

Direct Synthesis of Semiconducting Single‐Walled Carbon Nanotubes Toward High‐Performance Electronics

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