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Baek, Kangkyun
복잡계 자기조립 연구단
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Atomically Smooth Graphene-Based Hybrid Template for the Epitaxial Growth of Organic Semiconductor Crystals

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Title
Atomically Smooth Graphene-Based Hybrid Template for the Epitaxial Growth of Organic Semiconductor Crystals
Author(s)
Nguyen, Nguyen Ngan; Lee, Hyo Chan; Kangkyun Baek; Yoo, Min Seok; Lee, Hansol; Lim, Hyungsub; Choi, Shinyoung; Kim, Cheol-Joo; Nam, SungWoo; Cho, Kilwon
Publication Date
2021-03
Journal
ADVANCED FUNCTIONAL MATERIALS, v.31, no.11
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Atomically thin 2D materials are good templates to grow organic semiconductor thin films with desirable features. However, the 2D materials typically exhibit surface roughness and spatial charge inhomogeneity due to nonuniform doping, which can affect the uniform assembly of organic thin films on the 2D materials. A hybrid template is presented for preparation of highly crystalline small-molecule organic semiconductor thin film that is fabricated by transferring graphene onto a highly ordered self-assembled monolayer. This hybrid graphene template has low surface roughness and spatially uniform doping, and it yields highly crystalline fullerene thin films with grain sizes >300 nm, which is the largest reported grain size for C-60 thin films on 2D materials. A graphene/fullerene/pentacene phototransistor fabricated directly on the hybrid template has five times higher photoresponsivity than a phototransistor fabricated on a conventional graphene template supported by a SiO2 wafer.
URI
https://pr.ibs.re.kr/handle/8788114/10692
DOI
10.1002/adfm.202008813
ISSN
1616-301X
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > 1. Journal Papers (저널논문)
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