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나노입자 연구단
나노입자 연구단
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One-Dimensional Assembly on Two-Dimensions: AuCN Nanowire Epitaxy on Graphene for Hybrid Phototransistors

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Title
One-Dimensional Assembly on Two-Dimensions: AuCN Nanowire Epitaxy on Graphene for Hybrid Phototransistors
Author(s)
Jeongsu Jang; Yangjin Lee; Jun-Yeong Yoon; Hoon Hahn Yoon; Jahyun Koo; Jeongheon Choe; Sungho Jeon; Jongbaek Sung; Jungwon Park; Won Chul Lee; Hoonkyung Lee; Hu Young Jeong; Kibog Park; Kwanpyo Kim
Publication Date
2018-10
Journal
NANO LETTERS, v.18, no.10, pp.6214 - 6221
Publisher
AMER CHEMICAL SOC
Abstract
The van der Waals epitaxy of functional materials provides an interesting and efficient way to manipulate the electrical properties of various hybrid twodimensional (2D) systems. Here we show the controlled epitaxial assembly of semiconducting one-dimensional (1D) atomic chains, AuCN, on graphene and investigate the electrical properties of 1D/2D van der Waals heterostructures. AuCN nanowire assembly is tuned by different growth conditions, although the epitaxial alignment between AuCN chains and graphene remains unchanged. The switching of the preferred nanowire growth axis indicates that diffusion kinetics affects the nanowire formation process. Semiconducting AuCN chains endow the 1D/2D hybrid system with a strong responsivity to photons with an energy above 2.7 eV, which is consistent with the bandgap of AuCN. A large UV response (responsivity ∼104 A/W) was observed under illumination using 3.1 eV (400 nm) photons. Our study clearly demonstrates that 1D chain-structured semiconductors can play a crucial role as a component in multifunctional van der Waals heterostructures.© 2018 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/5428
ISSN
1530-6984
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
Nano Lett. 2018, 18(10), 6214_6221.pdfDownload

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