A high-performance transparent photodetector via building hierarchical g-C3N4 nanosheets/CNTs van der Waals heterojunctions by a facile and scalable approach

Fang，Huajing1; Ma，Hailong1; Zheng，Cheng2; Lennon，Sean3; Wu，Wenting1; Wu，Liangliang2; Wang，Hong2,4

2020-11-01

10.1016/j.apsusc.2020.147122

APPLIED SURFACE SCIENCE   影响因子和分区

0169-4332

1873-5584

Graphitic-carbon nitride (g-CN) as a novel two-dimensional (2D) material has attracted considerable attentions due to its unique properties and diverse applications. However, the poor electron-hole (e-h) separation efficiency and short carrier diffusion length greatly hinder its application in optoelectronic devices. Here, we present a solution-processed photodetector based on the g-CN nanosheets and carbon nanotubes (CNTs). Through a layer by layer spin coating method, a grid-like active layer with a large number of g-CN nanosheets/CNTs van der Waals heterojunctions can be assembled. This subtle structure endows the device an outstanding photoelectric conversion performance as well as a high transparency (72%). The photodetector exhibits a broadband response to UV and visible light. Under 365 nm UV illumination, a high responsivity up to 0.23 A/W has been obtained, which exceeds those of most current transparent photodetectors. This work not only presents the first transparent device based on g-CN, but also provides a paradigm on designing low-cost and high performance electronic devices with van der Waals heterojunctions.

Carbon nanotube Graphitic-carbon nitride Photodetector Transparent electronics van der Waals heterojunctions

SCI ; EI

英语

通讯

National Science Foundation of China[61631166004][51902250] ; National Postdoctoral Program for Innovative Talents[BX201700185] ; China Postdoctoral Science Foundation[2017M620447] ; Fundamental Research Funds for the Central Universities[xzy012019002]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000564391700010

ELSEVIER

20202708903865

Carbon nitride ; Heterojunctions ; Photons ; Nanosheets ; Photodetectors ; Photoelectricity ; Van der Waals forces

Electricity: Basic Concepts and Phenomena:701.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3 ; Solid State Physics:933 ; Crystalline Solids:933.1

MATERIALS SCIENCE

2-s2.0-85087329936

Scopus

1.State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an,710049,China
2.School of Electronic and Information Engineering and State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an,710049,China
3.Department of Physics,The University of Western Australia,Crawley,35 Stirling Highway,6009,Australia
4.Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China

Fang，Huajing,Ma，Hailong,Zheng，Cheng,et al. A high-performance transparent photodetector via building hierarchical g-C3N4 nanosheets/CNTs van der Waals heterojunctions by a facile and scalable approach[J]. APPLIED SURFACE SCIENCE,2020,529.

Fang，Huajing.,Ma，Hailong.,Zheng，Cheng.,Lennon，Sean.,Wu，Wenting.,...&Wang，Hong.(2020).A high-performance transparent photodetector via building hierarchical g-C3N4 nanosheets/CNTs van der Waals heterojunctions by a facile and scalable approach.APPLIED SURFACE SCIENCE,529.

Fang，Huajing,et al."A high-performance transparent photodetector via building hierarchical g-C3N4 nanosheets/CNTs van der Waals heterojunctions by a facile and scalable approach".APPLIED SURFACE SCIENCE 529(2020).