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Kamiya K, Kayama K, Nobuoka M, Sakaguchi S, Sakurai T, Kawata M, Tsutsui Y, Suda M, Idesaki A, Koshikawa H, Sugimoto M, Lakshmi GBVS, Avasthi DK, Seki S. Ubiquitous organic molecule-based free-standing nanowires with ultra-high aspect ratios. Nat Commun 2021; 12:4025. [PMID: 34188041 PMCID: PMC8241875 DOI: 10.1038/s41467-021-24335-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/08/2021] [Indexed: 11/08/2022] Open
Abstract
The critical dimension of semiconductor devices is approaching the single-nm regime, and a variety of practical devices of this scale are targeted for production. Planar structures of nano-devices are still the center of fabrication techniques, which limit further integration of devices into a chip. Extension into 3D space is a promising strategy for future; however, the surface interaction in 3D nanospace make it hard to integrate nanostructures with ultrahigh aspect ratios. Here we report a unique technique using high-energy charged particles to produce free-standing 1D organic nanostructures with high aspect ratios over 100 and controlled number density. Along the straight trajectory of particles penetrating the films of various sublimable organic molecules, 1D nanowires were formed with approximately 10~15 nm thickness and controlled length. An all-dry process was developed to isolate the nanowires, and planar or coaxial heterojunction structures were built into the nanowires. Electrical and structural functions of the developed standing nanowire arrays were investigated, demonstrating the potential of the present ultrathin organic nanowire systems.
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Affiliation(s)
- Koshi Kamiya
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Kazuto Kayama
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Masaki Nobuoka
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Shugo Sakaguchi
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Tsuneaki Sakurai
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan.
| | - Minori Kawata
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Masayuki Suda
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Akira Idesaki
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma, Japan
| | - Hiroshi Koshikawa
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma, Japan
| | - Masaki Sugimoto
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma, Japan
| | - G B V S Lakshmi
- Special Center for Nanoscience, Jawaharlal Nehru University, New Delhi, India
| | - D K Avasthi
- Department of Physics, School of Engineering, University of Petroleum and Energy Studies, Dehradun, India
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan.
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Sun J, Choi Y, Choi YJ, Kim S, Park JH, Lee S, Cho JH. 2D-Organic Hybrid Heterostructures for Optoelectronic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1803831. [PMID: 30786064 DOI: 10.1002/adma.201803831] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 01/10/2019] [Indexed: 05/08/2023]
Abstract
The unique properties of hybrid heterostructures have motivated the integration of two or more different types of nanomaterials into a single optoelectronic device structure. Despite the promising features of organic semiconductors, such as their acceptable optoelectronic properties, availability of low-cost processes for their fabrication, and flexibility, further optimization of both material properties and device performances remains to be achieved. With the emergence of atomically thin 2D materials, they have been integrated with conventional organic semiconductors to form multidimensional heterostructures that overcome the present limitations and provide further opportunities in the field of optoelectronics. Herein, a comprehensive review of emerging 2D-organic heterostructures-from their synthesis and fabrication to their state-of-the-art optoelectronic applications-is presented. Future challenges and opportunities associated with these heterostructures are highlighted.
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Affiliation(s)
- Jia Sun
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan, 410083, P. R. China
| | - Yongsuk Choi
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Young Jin Choi
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Seongchan Kim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Jin-Hong Park
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Sungjoo Lee
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Jeong Ho Cho
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
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Nguyen NN, Lee HC, Kang B, Jo M, Cho K. Electric-Field-Tunable Growth of Organic Semiconductor Crystals on Graphene. NANO LETTERS 2019; 19:1758-1766. [PMID: 30747540 DOI: 10.1021/acs.nanolett.8b04764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Growth of organic semiconductor thin films on a two-dimensional template is affected by its properties and is not well understood. This growth process dictates a thin film's final morphology and crystal structure and is controlled by the interactions between ad-molecules and the template. Here, we report that the template's charge density determines the tuning of such interactions. We observe the dependence of pentacene nucleation on charge carrier density ng in graphene under an applied electric field and contact-doping and then deduce that the interaction energy EA between the ad-molecule and the graphene is related linearly to ng. This tunability of EA allows control of the pentacene crystals growth. We exploit these findings to demonstrate that graphene, in which ng is controlled, can be used to template pentacene thin films for improved optoelectronic properties, such as electrical conductivity and exciton diffusion length.
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Affiliation(s)
- Nguyen Ngan Nguyen
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Hyo Chan Lee
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Boseok Kang
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Mankyu Jo
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Kilwon Cho
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
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Tian T, Shih CJ. Molecular Epitaxy on Two-Dimensional Materials: The Interplay between Interactions. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02669] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tian Tian
- Institute for Chemical and
Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Chih-Jen Shih
- Institute for Chemical and
Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
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