نتایج جستجو برای: type ii heterostructure
تعداد نتایج: 1799788 فیلتر نتایج به سال:
A novel ZnO/reduced graphene oxide (RGO)/CdS heterostructure was successfully synthesized via a facile three-step solution method. RGO serves as an interlayer between ZnO nanowires and CdS quantum dots (QDs), which provides a high speed charge transfer channel, leading to an enhanced charge separation efficiency. Under UV light irradiation, the photocatalytic activity of the ZnO/RGO/CdS heteros...
Correction for ‘First principles study of electronic properties and optoelectronic performance type-II SiS/BSe heterostructure’ by Shah Saleemullah Sabir et al. , New J. Chem. 2023, 47 4537–4542, https://doi.org/10.1039/D2NJ06198H.
Modern quasiparticle calculations based on hybrid functionals and the GW approximation or a transition-state approach are used to predict natural band discontinuities between wurtzite and zinc-blende polytypes of AlN, GaN, and InN by two alignment methods, a modified Tersoff method for the branch-point energy and the Shockley-Anderson model aligning electrostatic potentials. We find a type-I he...
Type-II band alignment structure is coveted in the design of photovoltaic devices and detectors, since it is beneficial for the transport of photogenerated carriers. Regrettably, for group-III-nitride wide bandgap semiconductors, all existing devices are limited to type-I heterostructures, owing to the unavailable of type-II ones. This seriously restricts the designing flexibility for optoelect...
Abstract In this article an attempt has been made to determine the uni-directinal (001-direction) pressure effect on optical gain spectra and corresponding emission wavelength of a designed type-II nano-scale heterostructure based GaAsSb-InAs material system. As trial, range applied was kept as 1-3 GPa. On introducing uni-directional (in 1 GPa 3 GPa) QW heterostructure, is reduced significantly...
abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...
Using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS), we examine the electronic structure of transition metal dichalcogenide heterostructures (TMDCHs) composed of monolayers of MoS2 and WS2. STS data are obtained for heterostructures of varying stacking configuration as well as the individual monolayers. Analysis of the tunneling spectra includes the influence of ...
Ultrafast exciton dynamics in 2D in-plane hetero-nanostructures: delocalization and charge transfer.
In this article we study the ultrafast dynamics of excitons and charge carriers photogenerated in two-dimensional in-plane heterostructures, namely, CdSe-CdTe nanoplatelets. We combine transient absorption and two-dimensional electronic spectroscopy to study charge transfer and delocalization from a few tens of femtoseconds to several nanoseconds. In contrast with spherical nanocrystals, the re...
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