Universität zu Köln

Chen, Zongping, Narita, Akimitsu and Muellen, Klaus (2020). Graphene Nanoribbons: On-Surface Synthesis and Integration into Electronic Devices. Adv. Mater., 32 (45). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-4095

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Abstract

Graphene nanoribbons (GNRs) are quasi-1D graphene strips, which have attracted attention as a novel class of semiconducting materials for various applications in electronics and optoelectronics. GNRs exhibit unique electronic and optical properties, which sensitively depend on their chemical structures, especially the width and edge configuration. Therefore, precision synthesis of GNRs with chemically defined structures is crucial for their fundamental studies as well as device applications. In contrast to top-down methods, bottom-up chemical synthesis using tailor-made molecular precursors can achieve atomically precise GNRs. Here, the synthesis of GNRs on metal surfaces under ultrahigh vacuum (UHV) and chemical vapor deposition (CVD) conditions is the main focus, and the recent progress in the field is summarized. The UHV method leads to successful unambiguous visualization of atomically precise structures of various GNRs with different edge configurations. The CVD protocol, in contrast, achieves simpler and industry-viable fabrication of GNRs, allowing for the scale up and efficient integration of the as-grown GNRs into devices. The recent updates in device studies are also addressed using GNRs synthesized by both the UHV method and CVD, mainly for transistor applications. Furthermore, views on the next steps and challenges in the field of on-surface synthesized GNRs are provided.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Chen, Zongping UNSPECIFIED UNSPECIFIED UNSPECIFIED Narita, Akimitsu UNSPECIFIED UNSPECIFIED UNSPECIFIED Muellen, Klaus UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-318928
DOI:	10.1002/adma.202001893
Journal or Publication Title:	Adv. Mater.
Volume:	32
Number:	45
Date:	2020
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1521-4095
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BOTTOM-UP SYNTHESIS; BAND-GAP; CARBON NANOTUBES; LARGE-AREA; ARMCHAIR; GROWTH; HETEROJUNCTIONS; FABRICATION; DEPOSITION; FILMS Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31892