High-Performance Photodiode Based on Atomically Thin WSe2 /MoS2 Nanoscroll Integration.

Self-assembled structures of 2D materials with novel physical and chemical properties, such as the good electrical and optoelectrical performance in nanoscrolls, have attracted a lot of attention. However, high photoresponse speed as well as high responsivity cannot be achieved simultaneously in the nanoscrolls. Here, a photodiode consisting of single MoS2 nanoscrolls and a p-type WSe2 is demonstrated and shows excellent photovoltaic characteristics with a large open-circuit voltage of 0.18 V and high current intensity. Benefiting from the heterostructure, the dark current is suppressed resulting in an increased ratio of photocurrent to dark current (two orders of magnitude higher than the single MoS2 nanoscroll device). Furthermore, it yields high responsivity of 0.3 A W-1 (corresponding high external quantum efficiency of ≈75%) and fast response time of 5 ms, simultaneously. The response speed is increased by three orders of magnitude over the single MoS2 nanoscroll device. In addition, broadband photoresponse up to near-infrared could be achieved. This atomically thin WSe2 /MoS2 nanoscroll integration not only overcomes the disadvantage of MoS2 nanoscrolls, but also demonstrates a single nanoscroll-based heterostructure with high performance, promising its potential in the future optoelectronic applications.

[1]  Hui Yan,et al.  Cascade-type energy band design of a black phosphorus photodetector with high performance , 2019, Journal of Materials Chemistry C.

[2]  G. Konstantatos.  Current status and technological prospect of photodetectors based on two-dimensional materials , 2018, Nature Communications.

[3]  Jinlan Wang,et al.  Highly Promoted Carrier Mobility and Intrinsic Stability by Rolling Up Monolayer Black Phosphorus into Nanoscrolls. , 2018, The journal of physical chemistry letters.

[4]  Yaping Zhao,et al.  A facile and general approach for production of nanoscrolls with high-yield from two-dimensional nanosheets , 2018, Scientific Reports.

[5]  F. Besenbacher,et al.  Self-scrolling MoS2 metallic wires. , 2018, Nanoscale.

[6]  Hui Yan,et al.  Visible-infrared dual-mode MoS2-graphene-MoS2 phototransistor with high ratio of the Iph/Idark , 2018, 2D Materials.

[7]  Daoben Zhu,et al.  Rolling up transition metal dichalcogenide nanoscrolls via one drop of ethanol , 2018, Nature Communications.

[8]  Qiyuan He,et al.  Transforming Monolayer Transition-Metal Dichalcogenide Nanosheets into One-Dimensional Nanoscrolls with High Photosensitivity. , 2018, ACS applied materials & interfaces.

[9]  Yanhan Yang,et al.  Two dimensional materials based photodetectors , 2018 .

[10]  Weida Hu,et al.  Photogating in Low Dimensional Photodetectors , 2017, Advanced science.

[11]  Kai Xu,et al.  Progress on Electronic and Optoelectronic Devices of 2D Layered Semiconducting Materials. , 2017, Small.

[12]  Artur R. Davoyan,et al.  High Photovoltaic Quantum Efficiency in Ultrathin van der Waals Heterostructures. , 2017, ACS nano.

[13]  C. Ortix,et al.  Theoretical Prediction of a Giant Anisotropic Magnetoresistance in Carbon Nanoscrolls. , 2017, Nano letters.

[14]  Zhixin Li,et al.  Novel Transfer Behaviors in 2D MoS2/WSe2 Heterotransistor and Its Applications in Visible‐Near Infrared Photodetection , 2017 .

[15]  Chang E. Ren,et al.  Porous heterostructured MXene/carbon nanotube composite paper with high volumetric capacity for sodium-based energy storage devices , 2016 .

[16]  Wei Chen,et al.  Rolling Up a Monolayer MoS2 Sheet. , 2016, Small.

[17]  Frank H. L. Koppens,et al.  Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor , 2016, Nature Communications.

[18]  V. Kundŕat,et al.  Photonic gas sensors exploiting directly the optical properties of hybrid carbon nanotube localized surface plasmon structures , 2016, Light: Science & Applications.

[19]  M. Raschke,et al.  Hybrid Tip-Enhanced Nanospectroscopy and Nanoimaging of Monolayer WSe2 with Local Strain Control. , 2016, Nano letters.

[20]  X. Tao,et al.  Absorption mechanism of carbon-nanotube paper-titanium dioxide as a multifunctional barrier material for lithium-sulfur batteries , 2015, Nano Research.

[21]  Sang-Gook Kim,et al.  Extremely Elastic Wearable Carbon Nanotube Fiber Strain Sensor for Monitoring of Human Motion. , 2015, ACS nano.

[22]  X. Qiao,et al.  Photoluminescence properties and exciton dynamics in monolayer WSe2 , 2014 .

[23]  Guangyuan Zheng,et al.  Interconnected hollow carbon nanospheres for stable lithium metal anodes. , 2014, Nature nanotechnology.

[24]  U. Waghmare,et al.  Thermal expansion, anharmonicity and temperature-dependent Raman spectra of single- and few-layer MoSe₂ and WSe₂. , 2014, Chemphyschem : a European journal of chemical physics and physical chemistry.

[25]  D. Suh,et al.  Formation of hexagonal boron nitride nanoscrolls induced by inclusion and exclusion of self-assembling molecules in solution process. , 2014, Nanoscale.

[26]  A. M. van der Zande,et al.  Atomically thin p-n junctions with van der Waals heterointerfaces. , 2014, Nature nanotechnology.

[27]  D. Smirnov,et al.  New First Order Raman-active Modes in Few Layered Transition Metal Dichalcogenides , 2014, Scientific Reports.

[28]  Kai Xu,et al.  Atomic-layer triangular WSe2 sheets: synthesis and layer-dependent photoluminescence property , 2013, Nanotechnology.

[29]  Jung-Soo Lee,et al.  Chemical vapor deposition of mesoporous graphene nanoballs for supercapacitor. , 2013, ACS nano.

[30]  D. Galvão,et al.  Controlled route to the fabrication of carbon and boron nitride nanoscrolls: A molecular dynamics investigation , 2013 .

[31]  Jian Zhou,et al.  Band offsets and heterostructures of two-dimensional semiconductors , 2013 .

[32]  Qing Hua Wang,et al.  Electronics and optoelectronics of two-dimensional transition metal dichalcogenides. , 2012, Nature nanotechnology.

[33]  Guangxia Shen,et al.  Rolling up graphene oxide sheets into micro/nanoscrolls by nanoparticle aggregation , 2012 .

[34]  Zhiyong Zhang,et al.  High-performance photodetectors for visible and near-infrared lights based on individual WS2 nanotubes , 2012 .

[35]  Hong Jiang.  Electronic Band Structures of Molybdenum and Tungsten Dichalcogenides by the GW Approach , 2012 .

[36]  Daoben Zhu,et al.  Production of High‐Quality Carbon Nanoscrolls with Microwave Spark Assistance in Liquid Nitrogen , 2011, Advanced materials.

[37]  Lili Zhang,et al.  Mesoporous carbon nanospheres with an excellent electrocapacitive performance , 2011 .

[38]  Dal‐Hee Min,et al.  Preparation of scrolled graphene oxides with multi-walled carbon nanotube templates , 2010 .

[39]  Cheng Lv,et al.  Fabrication of carbon nanoscrolls from monolayer graphene. , 2010, Small.

[40]  Huajian Gao,et al.  Tunable water channels with carbon nanoscrolls. , 2010, Small.

[41]  G. Ostojic,et al.  Carbon Nanotubes , 2010, Methods in Molecular Biology.

[42]  W. Sigmund,et al.  Photocatalytic Carbon‐Nanotube–TiO2 Composites , 2009 .

[43]  Xu Xie,et al.  Controlled fabrication of high-quality carbon nanoscrolls from monolayer graphene. , 2009, Nano letters.

[44]  Phaedon Avouris,et al.  Carbon-nanotube photonics and optoelectronics , 2008 .

[45]  Emmanuel Tylianakis,et al.  Carbon nanoscrolls: a promising material for hydrogen storage. , 2007, Nano letters.

[46]  Ray H. Baughman,et al.  Structure and dynamics of carbon nanoscrolls , 2004 .

[47]  Richard B. Kaner,et al.  A Chemical Route to Carbon Nanoscrolls , 2003, Science.

[48]  A. Greiner,et al.  Multi-wall carbon nanotubes with uniform chirality: evidence for scroll structures , 2003 .

[49]  A. Rinzler,et al.  Electronic structure of atomically resolved carbon nanotubes , 1998, Nature.

[50]  P. Warter,et al.  Sublinear Photocurrents and Surface Recombination in Cadmium Sulfide Crystals , 1966 .