Ultrahigh mobility and efficient charge injection in monolayer organic thin-film transistors on boron nitride by Daowei He, Jingsi Qiao, Linglong Zhang,

Slides:

Advertisements

Similar presentations

Fig. 4 3D reconfiguration of liquid metals for electronics.

Advertisements

Fig. 5 MicroLED array with 3D liquid metal interconnects.

Fig. 2 Transport properties of a BP transistor at low temperature.

Fig. 1 Characterization of the device structure.

Fig. 1 High-resolution printing of liquid metals.

Fig. 4 Ballistic simulation of BP FETs.

Fig. 3 Theoretical analysis of the thermalization pathways.

Fig. 3 The electrical contact of direct-printed and reconfigured liquid metals. The electrical contact of direct-printed and reconfigured liquid metals.

Fig. 2 Zeeman splitting of the plateau and associated Kondo feature.

Fig. 4 First-principles DFT calculations.

Fig. 2 Fluidic and electrical characteristics of the wireless optofluidic system. Fluidic and electrical characteristics of the wireless optofluidic system.

Fig. 3 Saturation velocity of BP FETs.

Tuning of the conductance plateau of device 1 and quantum dot model

Fig. 6 PL study showing the lower energetic states at the layer edges.

Fig. 3 Scan rate effects on the layer edge current.

Fig. 1 Schematics and design of the device structure.

Fig. 2 Device characteristics.

Fig. 1 The structure of the 3DGraphene foam.

Fig. 1 Parameterization and temporal distribution of carbon isotopic events in the database. Parameterization and temporal distribution of carbon isotopic.

Fig. 1 Distribution of total and fake news shares.

Fig. 1 Structure of L10-IrMn.

Fig. 1 A monolayer ReSe2 on a back-gated G/h-BN device.

Fig. 2 Solid-state properties of polymer thin films.

Fig. 3 Magnetic and transport properties of ACoO3 (A = Ca, Sr).

Electronic structure of the oligomer (n = 8) at the UB3LYP/6-31G

Fig. 4 Resistance oscillations in Nc-G film.

Fig. 1 Characterization of particles and scaffold.

Fig. 2 Gate and magnetic field dependence of the edge conduction.

Fig. 5 Schematic phase diagrams of Ising spin systems and Mott transition systems. Schematic phase diagrams of Ising spin systems and Mott transition systems.

Characteristics of ultrathin single-crystalline semiconductor films

Fig. 3 HfSe2 transistors. HfSe2 transistors. (A) Schematic of HfSe2 device, back-gated through 90-nm SiO2, and with ALD alumina used as both protective.

Fig. 4 Short-channel 2L-OFET for cutoff frequency measurement.

Ultratransparent and stretchable graphene electrodes

Fig. 2 Electrical and scanning probe characterization.

Fig. 1 Optical and STEM characterization of vdW heterostructures.

Fig. 2 Magnetic properties of FGT/Pt bilayer.

Fig. 3 Characterization of the current-induced effective fields.

Comparison of electrical and optical properties of MGGs and graphene

Fig. 4 SPICE simulation of stochasticity.

Fig. 1 Schematic view and characterizations of FGT/Pt bilayer.

Dipole-like electrostatic asymmetry of gold nanorods

Fig. 2 Comparison of 1L, 2L, and 3L single crystals.

Fig. 4 Relationships between light and economic parameters.

HfSe2 and ZrSe2: Two-dimensional semiconductors with native high-κ oxides by Michal J. Mleczko, Chaofan Zhang, Hye Ryoung Lee, Hsueh-Hui Kuo, Blanka Magyari-Köpe,

Fig. 1 Experimental strategy and elemental and morphological analysis of 3D/2D perovskite bilayer. Experimental strategy and elemental and morphological.

Fig. 4 SOT-driven perpendicular magnetization switching in the FGT/Pt bilayer device. SOT-driven perpendicular magnetization switching in the FGT/Pt bilayer.

Fig. 2 Simulations of possible doping positions and band structures.

Fig. 1 MIR photovoltaic detector based on b-AsP.

Fig. 1 Structural and electrical properties of Bi2Se3/BaFe12O19.

Multiplexed four- and eight-channel devices for rapid processing

Fig. 5 Simulation of the mechanical properties of the 3DGraphene foam in a wide temperature range down to the cryogenic region. Simulation of the mechanical.

Fig. 3 Electronic conductivity studies.

Fig. 2 Characterization of metal-chalcogenide thin films.

Fig. 3 Device architecture, photovoltaic performance, and operational stability of 3D/2D bilayer PSCs. Device architecture, photovoltaic performance, and.

Fig. 4 Single-particle contact angle measurements.

Fig. 3 Supraballs and films assembled from binary 219/217nm SPs/SMPs.

Fig. 2 Supraballs and films from binary SPs.

Fig. 2 Growth kinetics of borophene on silver.

Fig. 4 Behavior of resistance peak near density nm = 5.

Fig. 1 Structure and basic properties of EuTiO3 (ETO) films.

Fig. 2 Comparison between the different reflective metasurface proposals when θi = 0° and θr = 70°. Comparison between the different reflective metasurface.

Fig. 3 Optimization of the antidot GNR structure.

Fig. 3 Rubbery strain, pressure, and temperature sensors.

Fig. 1 Doping schematics and optical properties.

Fig. 3 Calculated electronic structure of ZrCoBi.

Fig. 1 Atomic structure of U1−xThxSb2.

Fig. 2 DFT calculations of stability and bandstructure of gallenene polymorphs. DFT calculations of stability and bandstructure of gallenene polymorphs.

Fig. 1 TA mode in (22¯0) Brillouin zone.

Fig. 1 Schottky junctions based on a layered PdCoO2 and β-Ga2O3 for high-temperature operation. Schottky junctions based on a layered PdCoO2 and β-Ga2O3.

Fig. 5 Modeling of the ASE threshold using the kinetic equations and experimental parameter inputs. Modeling of the ASE threshold using the kinetic equations.

Presentation transcript:

Ultrahigh mobility and efficient charge injection in monolayer organic thin-film transistors on boron nitride by Daowei He, Jingsi Qiao, Linglong Zhang, Junya Wang, Tu Lan, Jun Qian, Yun Li, Yi Shi, Yang Chai, Wei Lan, Luis K. Ono, Yabing Qi, Jian-Bin Xu, Wei Ji, and Xinran Wang Science Volume 3(9):e1701186 September 6, 2017 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

Fig. 1 Device geometry of monolayer C8-BTBT OTFT and its electrical characteristics. Device geometry of monolayer C8-BTBT OTFT and its electrical characteristics. (A) Schematic illustration of the contact between Au and C8-BTBT. The right part is overlaid by the charge density in the energy range of [EF-0.5 eV, EF]. EF is the Fermi energy of the system. The distribution of charge density along the z direction is plotted. (B) Cross-sectional TEM image of Au/C8-BTBT/BN stack, showing atomically smooth interface. (C) Room temperature double-sweep Ids-Vg characteristics (black line) and the extracted four-terminal field-effect mobility as a function of Vg (red circle). (D) Ids-Vds characteristics of the same device in (C). From top to bottom, Vg = −20, −50, −60, and −70 V, respectively. Inset shows the microscopic image of the device. The source (S), drain (D), and voltage probes (V−, V+) are marked. Scale bar, 6 μm. Daowei He et al. Sci Adv 2017;3:e1701186 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

Fig. 2 Temperature-dependent electrical transport of the monolayer C8-BTBT OTFT in Fig. 1. Temperature-dependent electrical transport of the monolayer C8-BTBT OTFT in Fig. 1. (A) Channel conductance σ4P as a function of Vg under different temperatures. (B) Extrinsic and intrinsic mobility as a function of temperature. (C) Histogram of the intrinsic mobility of monolayer devices at different temperature. During the cooling process, some devices were broken, so the number of devices decreases at low temperature. (D) Low-bias Ids-Vds characteristics at Vg = −70 V under T = 300 K (red), 200 K (blue), 100 K (green), and 80 K (black). Inset shows the contact resistance at Vg = −70 V as a function of temperature, derived from the gFPP measurements. Daowei He et al. Sci Adv 2017;3:e1701186 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

Fig. 3 Thickness-dependent OTFT properties. Thickness-dependent OTFT properties. (A) Room temperature Ids-Vds characteristics for typical monolayer, bilayer, and trilayer devices. (B) Arrhenius plot of Ids (Vg = −70 V, Vds = −1 V) of the monolayer (red circle) and bilayer (blue circle) devices in (A). The inset shows energy band diagrams near the contact, with different mechanisms. (C) Arrhenius plot of ln(Ids/T3/2) of the bilayer device in (A). From top to bottom: Vg = −60.4, −56.4, −52.4, −48.4, −44.4, and −40.4 V. (D) Derived SB height as a function of Vg. The true SB height is 140 meV, as pointed by the arrow. Daowei He et al. Sci Adv 2017;3:e1701186 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

Fig. 4 Calculated electronic and contact properties. Calculated electronic and contact properties. (A) Band alignment of Au/1L and Au/2L metal-semiconductor junction. Four valance states responsible for the hole transport are marked (the band structure is shown in fig. S8). The color of these states indicates different DOSs as shown by the color bar. (B) Total DOS for 1L (blue solid line) and 2L C8-BTBT (red solid line). Blue and red arrows mark the highest-energy valence bands for 1L and 2L, respectively. (C) Spatial distribution of the molecular orbitals at G point for 1LVB1 and 1LVB2. (D) Spatial distribution of the molecular orbitals at G and X point (0.5, 0, 0) for 2LVB1 using an isosurface of 0.0005 e bohr−3. Daowei He et al. Sci Adv 2017;3:e1701186 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

Fig. 5 Electrical characteristics of graphene-contacted bilayer C8-BTBT OTFT. Electrical characteristics of graphene-contacted bilayer C8-BTBT OTFT. (A) Schematic illustration of the device geometry. (B) Cross-sectional TEM image of Au/graphene/C8-BTBT/BN stack. The arrows point at the position of graphene. (C) Raman spectra and AFM (inset) of CVD graphene undergone 20-min UVO treatment. Several characteristic peaks are marked. Scale bar, 3 μm. (D) Room temperature double-sweep Ids-Vg characteristics of a typical graphene-contacted bilayer device. (E) Room temperature Ids-Vds characteristics of the same device in (D). From top to bottom, Vg = −20, −50, −60, and −70 V. Daowei He et al. Sci Adv 2017;3:e1701186 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).