Journal ArticleDOI
Graphene/Si‐Quantum‐Dot Heterojunction Diodes Showing High Photosensitivity Compatible with Quantum Confinement Effect
Dong Hee Shin,Sung Kim,Jong Min Kim,Chan Wook Jang,Ju Hwan Kim,Kyeong Won Lee,Jungkil Kim,Si Duck Oh,Dae Hun Lee,Soo Seok Kang,Chang Oh Kim,Suk-Ho Choi,Kyung Joong Kim +12 more
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TLDR
Graphene/Si quantum dot (QD) heterojunction diodes are reported for the first time and the photoresponse is remarkably enhanced in the near-ultraviolet range compared to commercially available bulk-Si photodetectors.Abstract:
Graphene/Si quantum dot (QD) heterojunction diodes are reported for the first time The photoresponse, very sensitive to variations in the size of the QDs as well as in the doping concentration of graphene and consistent with the quantum-confinement effect, is remarkably enhanced in the near-ultraviolet range compared to commercially available bulk-Si photodetectors The photoresponse proves to be dominated by the carriertunneling mechanismread more
Citations
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Mixed-dimensional van der Waals heterostructures
TL;DR: In this paper, a survey of mixed-dimensional van der Waals (vdw) heterostructures is presented, where 2D materials with non-2D materials adhere primarily through non-covalent interactions.
Journal ArticleDOI
The physics and chemistry of graphene-on-surfaces
Guoke Zhao,Xinming Li,Meirong Huang,Zhen Zhen,Yujia Zhong,Qiao Chen,Xuanliang Zhao,Yijia He,Ruirui Hu,Tingting Yang,Rujing Zhang,Changli Li,Jing Kong,Jianbin Xu,Rodney S. Ruoff,Hongwei Zhu +15 more
TL;DR: The major "graphene-on-surface" structures are described and the roles of their properties and related phenomena in governing the overall performance for specific applications including optoelectronics, surface catalysis, anti-friction and superlubricity, and coatings and composites are examined.
Journal ArticleDOI
Graphene Coupled with Silicon Quantum Dots for High-Performance Bulk-Silicon-Based Schottky-Junction Photodetectors
TL;DR: Graphene is coupled with silicon quantum dots (Si QDs) on top of bulk Si to form a hybrid photodetector that combines the electrical and optical contributions of Si QDs to enable a superior performance.
Journal ArticleDOI
Mixed-Dimensional van der Waals Heterostructures
TL;DR: This work presents a succinct and critical survey of emerging mixed-dimensional (2D + nD, where n is 0, 1 or 3) heterostructure devices and highlights the challenges and opportunities for Mixed-dimensional vdW heterostructures.
Journal ArticleDOI
Gas sensing with heterostructures based on two-dimensional nanostructured materials: a review
Atanu Bag,Nae-Eung Lee +1 more
TL;DR: A comprehensive review of recent progress in gas sensors with advanced heterostructures based on 2D nanostructured materials is presented in this paper, where the fundamental sensing mechanisms of different types of gas sensors are systematically discussed, and key device architectures and their performances are summarized.
References
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Journal ArticleDOI
Graphene-based composite materials
Sasha Stankovich,Dmitriy A. Dikin,Geoffrey Dommett,K. Kohlhaas,Eric Zimney,Eric A. Stach,Richard D. Piner,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: The bottom-up chemical approach of tuning the graphene sheet properties provides a path to a broad new class of graphene-based materials and their use in a variety of applications.
Journal ArticleDOI
Large-scale pattern growth of graphene films for stretchable transparent electrodes
Keun Soo Kim,Yue Zhao,Houk Jang,Sang Yoon Lee,Jong Min Kim,Kwang S. Kim,Jong Hyun Ahn,Philip Kim,Philip Kim,Jae-Young Choi,Byung Hee Hong +10 more
TL;DR: The direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers is reported, and two different methods of patterning the films and transferring them to arbitrary substrates are presented, implying that the quality of graphene grown by chemical vapours is as high as mechanically cleaved graphene.
Journal ArticleDOI
Ultrahigh electron mobility in suspended graphene
Kirill I. Bolotin,K. J. Sikes,Zhigang Jiang,Martin Klima,Geoffrey Fudenberg,James Hone,Philip Kim,Horst Stormer,Horst Stormer +8 more
TL;DR: In this paper, a single layer graphene was suspended ∼150nm above a Si/SiO2 gate electrode and electrical contacts to the graphene was achieved by a combination of electron beam lithography and etching.