Track topics on Twitter Track topics that are important to you
We report a reversible photo-induced doping effect in two-dimensional (2D) tungsten diselenide (WSe2) field effect transistors on hexagonal boron nitride (h-BN) substrates under low-intensity visible light illumination (∼10 nW μm-2). Our experimental results have shown that this reversible doping process is mainly attributed to two types of defects in h-BN substrates. Moreover, the photo-doped WSe2 transistors can be stable for more than one week in a dark environment and maintain the high on/off ratio (108) and carrier mobility, since there are no additional impurities involved during the photo-induced doping process to increase the columbic scattering in the conducting channel. These fundamental studies not only provide an accessible strategy to control the charge doping level and then to achieve a writing/erasing process in 2D transistors, but also shed light on the defect states and interfaces in 2D materials.
This article was published in the following journal.
We investigate the valley Hall effect (VHE) in monolayer WSe field-effect transistors using optical Kerr rotation measurements at 20 K. While studies of the VHE have so far focused on n -doped MoS, we...
The strong and controllable chemical sensitivity of organic semiconductors (OSCs) and the amplification capability of transistors in circuits make use of OSC-based field-effect transistors compelling ...
Two-dimensional (2-D) materials such as MoS and phosphorene provide an ideal platform to realize extremely thin body metal-oxide-semiconductor field effect transistors (MOSFETs) which is highly immune...
Photo-induced free radical production was observed in tetraphenylethylene ligand-based metal-organic frameworks (MOFs). This feature endows the MOFs with reversible, fast, obvious, and controllable ph...
A detailed study of a high-k fluoropolymer gate dielectric material, P(VDF-HFP), is presented as a guide to achieve low operational voltage and electrically stable device performance. The large dipole...
Hypothesis: Intranasal administration of exogenous testosterone results in a characteristic profile during anti-doping testing, which is different than the profile seen when testosterone i...
The study consists of generation of biological samples (in blood and urine) positive to Epoetin alfa for laboratories that wish to perform the analysis of doping controls and maintain accr...
The purpose of this study on volunteers is whether THC and short-living metabolites are suited to detect recent Cannabis smoking within urine doping control.
We plan to investigate the serum elevation of 25(OH)D under UVB nb and UVA1 therapy, in order to determine the effect of these nowadays frequently used wavelengths for phototherapy on vita...
Illegitimate use of drugs for a desired effect in competitive sports; includes humans and animals.
Liver disease lasting six months or more, caused by an adverse drug effect. The adverse effect may result from a direct toxic effect of a drug or metabolite, or an idiosyncratic response to a drug or metabolite.
An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.
Liver disease lasting six months or more, caused by an adverse effect of a drug or chemical. The adverse effect may be caused by drugs, drug metabolites, chemicals from the environment, or an idiosyncratic response.
Abnormally high temperature intentionally induced in living things regionally or whole body. It is most often induced by radiation (heat waves, infra-red), ultrasound, or drugs.