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Correlated nanoscale analysis of the emission from wurtzite versus zincblende (In,Ga)As/GaAs nanowire core-shell quantum wells
Jonas Lähnemann, Megan O. Hill, Jesús Herranz +12
While the properties of wurtzite GaAs have been extensively studied during the past decade, little is known about the influence of the crystal polytype on ternary (In,Ga)As quantum…
High-Resolution Nanoscale Solid-State Nuclear Magnetic Resonance Spectroscopy
William Rose, Holger Haas, Angela Q. Chen +4
We present a new method for high-resolution nanoscale magnetic resonance imaging (nano-MRI) that combines the high spin sensitivity of nanowire-based magnetic resonance detection w…
Control of interlayer delocalization in 2H transition metal dichalcogenides
Kuang-Chung Wang, Teodor K. Stanev, Daniel Valencia +14
It is assessed in detail both experimentally and theoretically how the interlayer coupling of transition metal dichalcogenides controls the electronic properties of the respective…
Gate-tunable Memristive Phenonmena Mediated by Grain Boundaries in Single Layer MoS2
V. K. Sangwan, D. Jariwala, I. S. Kim +4
Continued progress in high speed computing depends on breakthroughs in both materials synthesis and device architectures. The performance of logic and memory can be enhanced signif…
Investigation of Band-Offsets at Monolayer-Multilayer MoS2 Junctions by Scanning Photocurrent Microscopy
Sarah L. Howell, Deep Jariwala, Chung-Chiang Wu +6
The thickness-dependent band structure of MoS2 implies that discontinuities in energy bands exist at the interface of monolayer (1L) and multilayer (ML) thin films. The characteris…
Effective Passivation of Exfoliated Black Phosphorus Transistors against Ambient Degradation
Joshua D. Wood, Spencer A. Wells, Deep Jariwala +7
Unencapsulated, exfoliated black phosphorus (BP) flakes are found to chemically degrade upon exposure to ambient conditions. Atomic force microscopy, electrostatic force microscopy…
Emerging Device Applications for Semiconducting Two-Dimensional Transition Metal Dichalcogenides
Deep Jariwala, Vinod K. Sangwan, Lincoln J. Lauhon +2
With advances in exfoliation and synthetic techniques, atomically thin films of semiconducting transition metal dichalcogenides have recently been isolated and characterized. Their…
Carbon nanomaterials for electronics, optoelectronics, photovoltaics, and sensing
Deep Jariwala, Vinod K. Sangwan, Lincoln J. Lauhon +2
In the last three decades, zero-dimensional, one-dimensional, and two-dimensional carbon nanomaterials (i.e., fullerenes, carbon nanotubes, and graphene, respectively) have attract…
Low Frequency Electronic Noise in Single-Layer MoS2 Transistors
Vinod K. Sangwan, Heather N. Arnold, Deep Jariwala +3
Ubiquitous low frequency 1/f noise can be a limiting factor in the performance and application of nanoscale devices. Here, we quantitatively investigate low frequency electronic no…
Elucidating the photoresponse of ultrathin MoS2 field-effect transistors by scanning photocurrent microscopy
Chung-Chiang Wu, Deep Jariwala, Vinod K. Sangwan +3
The mechanisms underlying the intrinsic photoresponse of few-layer (FL) molybdenum disulphide (MoS2) field-effect transistors are investigated via scanning photocurrent microscopy.…
Band-Like Transport in High Mobility Unencapsulated Single-Layer MoS2 Transistors
Deep Jariwala, Vinod K. Sangwan, Dattatray J. Late +5
Ultra-thin MoS2 has recently emerged as a promising two-dimensional semiconductor for electronic and optoelectronic applications. Here, we report high mobility (>60 cm2/Vs at room…
Extrinsic and Intrinsic Photoresponse in Monodisperse Carbon Nanotube Thin Film Transistors
Erik Sczygelski, Vinod K. Sangwan, Chung-Chiang Wu +5
Spectroscopic, time-resolved scanning photocurrent microscopy is shown to distinguish the intrinsic photoresponse of monodisperse semiconducting (99%) single-walled carbon nanotube…
Nanoscale Fourier-transform MRI
John M. Nichol, Tyler R. Naibert, Eric R. Hemesath +2
We report a method for nanometer-scale pulsed nuclear magnetic resonance imaging and spectroscopy. Periodic radiofrequency pulses are used to create temporal correlations in the st…