Two-dimensional tellurium-polymer membrane for ultrafast photonics.

Tellurium (Te) exhibits many intriguing properties including thermoelectricity, photoelectricity, piezoelectricity, and photoconductivity, and is widely used in detectors, sensors, transistors, and energy devices. Herein, ultrathin two-dimensional (2D) Te nanosheets were fabricated using a facile and cost-effective liquid-phase exfoliation method. Mixing the as-prepared 2D Te nanosheets with polyvinylpyrrolidone (PVP) provided a uniform 2D Te/PVP membrane. The 2D Te/PVP membrane exhibited excellent mechanical properties, thermal properties, and stability. The nonlinear optical properties of the membrane were characterized over the spectral range of 800 to 1550 nm using open-aperture Z-scan technology. A large nonlinear absorption coefficient of about 10-1 cm GW-1 over the whole tested wavelength range demonstrated the efficient broadband saturable absorptivity of the 2D Te/PVP membrane. Using the 2D Te/PVP membrane as a saturable absorber (SA), a highly stable femtosecond laser with a pulse duration of 829 fs in the communication band was obtained. This work highlights the promise of 2D Te/PVP membranes in ultrafast photonics and Te as a new 2D material for use in photonic devices such as all-optical modulators, switches, and thresholds.

[1]  Vivek Raj Shrestha,et al.  Solution-Synthesized High-Mobility Tellurium Nanoflakes for Short-Wave Infrared Photodetectors. , 2018, ACS nano.

[2]  C. B. de Araújo,et al.  Solvent effects on the linear and nonlinear optical response of silver nanoparticles , 2008 .

[3]  Dapeng Yu,et al.  Tunable bandgap in silicene and germanene. , 2012, Nano letters.

[4]  L. Luo,et al.  High-quality luminescent tellurium nanowires of several nanometers in diameter and high aspect ratio synthesized by a poly (vinyl pyrrolidone)-assisted hydrothermal process. , 2006, Langmuir : the ACS journal of surfaces and colloids.

[5]  P. C. Gibbons,et al.  Bismuth, tellurium, and bismuth telluride nanowires , 2004 .

[6]  J. Coleman,et al.  Ultrafast saturable absorption of two-dimensional MoS2 nanosheets. , 2013, ACS nano.

[7]  Y. Qian,et al.  CONTROLLED HYDROTHERMAL SYNTHESIS OF THIN SINGLE-CRYSTAL TELLURIUM NANOBELTS AND NANOTUBES , 2002 .

[8]  Zhenxing Wang,et al.  Van der Waals epitaxy and photoresponse of hexagonal tellurium nanoplates on flexible mica sheets. , 2014, ACS nano.

[9]  Meng Qiu,et al.  Graphene oxide/black phosphorus nanoflake aerogels with robust thermo-stability and significantly enhanced photothermal properties in air. , 2017, Nanoscale.

[10]  M. Janda,et al.  Growth of vacuum‐deposited tellurium films on glass substrates and some of their transport properties , 1976 .

[11]  Jie Ren,et al.  Unusually low thermal conductivity of atomically thin 2D tellurium. , 2018, Nanoscale.

[12]  Jun Wang,et al.  Saturable absorption behavior of free-standing graphene polymer composite films over broad wavelength and time ranges. , 2015, Optics express.

[13]  Yongping Zheng,et al.  Quantum Transport and Band Structure Evolution under High Magnetic Field in Few-Layer Tellurene. , 2018, Nano letters.

[14]  Gang Qiu,et al.  Tellurene: its physical properties, scalable nanomanufacturing, and device applications. , 2018, Chemical Society reviews.

[15]  Xian‐Wen Wei,et al.  Formation of single-crystal tellurium nanowires and nanotubes via hydrothermal recrystallization and their gas sensing properties at room temperature , 2010 .

[16]  Cheng-Cheng Liu,et al.  Quantum spin Hall effect in silicene and two-dimensional germanium. , 2011, Physical review letters.

[17]  Y. Qian,et al.  Size-controlled synthesis and growth mechanism of monodisperse tellurium nanorods by a surfactant-assisted method. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[18]  F. Xia,et al.  Rediscovering black phosphorus as an anisotropic layered material for optoelectronics and electronics. , 2014, Nature communications.

[19]  D. Fan,et al.  Two-Dimensional MXene (Ti3C2)-Integrated Cellulose Hydrogels: Toward Smart Three-Dimensional Network Nanoplatforms Exhibiting Light-Induced Swelling and Bimodal Photothermal/Chemotherapy Anticancer Activity. , 2018, ACS applied materials & interfaces.

[20]  William A. Goddard,et al.  Field-effect transistors made from solution-grown two-dimensional tellurene , 2017, 1704.06202.

[21]  Eric Hendrickx,et al.  Solvent Effects on the Second-Order Nonlinear Optical Response of .pi.-Conjugated Molecules: A Combined Evaluation through Self-Consistent Reaction Field Calculations and Hyper-Rayleigh Scattering Measurements , 1995 .

[22]  Junle Qu,et al.  Ultrathin 2D Nonlayered Tellurium Nanosheets: Facile Liquid‐Phase Exfoliation, Characterization, and Photoresponse with High Performance and Enhanced Stability , 2018 .

[23]  Y. Qian,et al.  Synthesis, characterization, and growth mechanism of tellurium nanotubes , 2005 .

[24]  G I Stegeman,et al.  Enhanced self-phase modulation in tapered fibers. , 1993, Optics letters.

[25]  K. Okuyama,et al.  Hall Mobility of Evaporated Tellurium Films , 1973 .

[26]  Wei Ji,et al.  High-mobility transport anisotropy and linear dichroism in few-layer black phosphorus , 2014, Nature communications.

[27]  Younan Xia,et al.  Formation of Tellurium Nanotubes Through Concentration Depletion at the Surfaces of Seeds , 2002 .

[28]  Xianfan Xu,et al.  Phosphorene: an unexplored 2D semiconductor with a high hole mobility. , 2014, ACS nano.

[29]  Kai Zhang,et al.  Few-layer selenium-doped black phosphorus: synthesis, nonlinear optical properties and ultrafast photonics applications , 2017 .

[30]  Feng Liu,et al.  Multivalency-Driven Formation of Te-Based Monolayer Materials: A Combined First-Principles and Experimental study. , 2017, Physical review letters.

[31]  V. B. Ufimtsev,et al.  Structure, Homogeneity and Properties of Thermoelectric Materials Based on Ternary Solid Solutions of Bismuth and Antimony Chalcogenides , 1997 .

[32]  Shuhong Yu,et al.  Superlong High-Quality Tellurium Nanotubes : Synthesis, Characterization, and Optical Property , 2008 .

[33]  Wenhui Wang,et al.  Two-dimensional antimonene single crystals grown by van der Waals epitaxy , 2016, Nature Communications.

[34]  Shoji Tanaka,et al.  FAST PHOTOCONDUCTIVITY OF TELLURIUM BY CO2 LASER RADIATION , 1968 .

[35]  Xianfan Xu,et al.  Phosphorene: an unexplored 2D semiconductor with a high hole mobility. , 2014, ACS nano.

[36]  Xiang Zhang,et al.  A graphene-based broadband optical modulator , 2011, Nature.

[37]  Noel Healy,et al.  Parabolic pulse generation in tapered silicon fibers. , 2010, Optics letters.

[38]  Seeram Ramakrishna,et al.  Graphene–Polymer Nanofiber Membrane for Ultrafast Photonics , 2010 .

[39]  Jeunghee Park,et al.  Synthesis of single crystalline tellurium nanotubes with triangular and hexagonal cross sections. , 2006, The journal of physical chemistry. B.

[40]  D. Fan,et al.  Broadband Nonlinear Photoresponse of 2D TiS2 for Ultrashort Pulse Generation and All‐Optical Thresholding Devices , 2018 .

[41]  Y. Wang,et al.  Spontaneous Transformation of Stabilizer‐Depleted Binary Semiconductor Nanoparticles into Selenium and Tellurium Nanowires , 2005 .

[42]  Meijie Zhu,et al.  Electrostatic Functionalization and Passivation of Water-Exfoliated Few-Layer Black Phosphorus by Poly Dimethyldiallyl Ammonium Chloride and Its Ultrafast Laser Application. , 2018, ACS applied materials & interfaces.

[43]  V. C. Sahni,et al.  Highly sensitive hydrogen sulphide sensors operable at room temperature , 2006 .

[44]  Jundong Shao,et al.  From Black Phosphorus to Phosphorene: Basic Solvent Exfoliation, Evolution of Raman Scattering, and Applications to Ultrafast Photonics , 2015 .

[45]  Ion M. Popescu,et al.  Infrared photovoltaic radiation detector with thin anisotropic tellurium film , 1970 .

[46]  Xiaochun Huang,et al.  Epitaxial Growth and Band Structure of Te Film on Graphene. , 2017, Nano letters.

[47]  Wen-yaung Lee.  The effect of ultrathin selenium overcoat on the stability of tellurium-based optical recording media☆ , 1987 .

[48]  Wenxi Wang,et al.  Stabilization of Black Phosphorous Quantum Dots in PMMA Nanofiber Film and Broadband Nonlinear Optics and Ultrafast Photonics Application , 2017 .

[49]  F. Lévy,et al.  ELECTRICAL PROPERTIES OF VAPOUR GROWN TELLURIUM SINGLE CRYSTALS , 1986 .

[50]  K. Araki,et al.  Piezoelectric and Elastic Properties of Single Crystalline Se-Te Alloys , 1972 .

[51]  Dianyuan Fan,et al.  2D Nonlayered Selenium Nanosheets: Facile Synthesis, Photoluminescence, and Ultrafast Photonics , 2017 .

[52]  Feng Zhang,et al.  Sub-200 fs soliton mode-locked fiber laser based on bismuthene saturable absorber. , 2018, Optics express.

[53]  Dianyuan Fan,et al.  Few‐layer Bismuthene: Sonochemical Exfoliation, Nonlinear Optics and Applications for Ultrafast Photonics with Enhanced Stability , 2018 .