Convective assembly technique which is a simple and scalable method was used for coating uniform graphene oxide (GO) nanosheets on zinc oxide (ZnO) thin films. Upon UV irradiation, an enhancement in the on-off ratio was observed after functionalizing ZnO films by GO nanosheets. The calculations of on-off ratio, the device responsivity, and the external quantum efficiency were investigated and i...

Blue phosphorene (BlueP) is a graphene-like phosphorus nanosheet which was synthesized very recently for the first time [Nano Lett., 2016, 16, 4903-4908]. The combination of electronic properties of two different two-dimensional materials in an ultrathin van der Waals (vdW) vertical heterostructure has been proved to be an effective approach to the design of novel electronic and optoelectronic ...

Submitted for the MAR14 Meeting of The American Physical Society Synthesis and Photoresponse of the Graphene-MoS2 in-plane Heterostructures1 XI LING, YUXUAN LIN, QIONG MA, JING KONG, MILDRED DRESSELHAUS, MIT — The heterostructures of two-dimensional materials offer a possibility to create high performance electronic and optoelectronic devices. Here, we present the construction of both the stack...

We propose a novel concept for creating high-Q cavities in photonic crystal slabs (PCS). We show that photonic crystal slab-based double heterostructure cavities, formed by variations in the refractive index, can have large a Q-factor (up to Q = 1× 10), and that such cavities can be implemented in chalcogenide glasses using their photosensitive properties. DOI: 10.2529/PIERS060907042030 In the ...

A porous phosphate heterostructure (PPHs) formed by a layered zirconium(IV) phosphate expanded with silica galleries was prepared presenting a P/Zr molar ratio equal to 2 and a (Si + Zr)/P ratio equal to 3. This pillared zirconium phosphate heterostructure was used as a catalyst support for bi-functional catalysts based on noble metals (Pt or Pd) and molybdenum oxide containing a total metallic...

One-dimensional (1D) assemblies of semiconductor nanocrystals (NCs) represent an important kind of 1D nanomaterial system due to their potential for exploring novel and enhanced electronic and photonic performances of devices. Herein, we present mass fabrication of a series of 1D arrays of CdSe and PbSe NCs on a large length scale with ultralong, aligned Se nanowires (NWs) as both the reactant ...

We show the first experimental demonstration of multiple heterostructure photonic crystal cavities being coupled together to form a chain of coupled resonators with up to ten cavities. This system allows us to engineer the group velocity of light over a wide range. Devices were fabricated using 193 nm deep UV lithography and standard silicon processing technology. Structures were analysed using...

With a brief introduction to ballistic phenomenon, the theory, fabrication, working and plausible applications of some ballistic devices are presented. Index – Heterostructure semiconductor, 2DEG, Electron Mobility, Mesoscopic Structure, Ballistic Transport, Ballistic Devices

We present results from fully two-dimensional physical device simulation. Scattering parameters (S-parameters) are directly obtained from small-signal AC-analysis of real heterostructure devices. A comparison reveals very good agreement with measured data.

We report on high-electrical-stress testing of Nichia GaN/InGaN/AlGaN single-quantum-well (SQW) light-emitting diodes. In contrast to our earlier experiments with double-heterostructure LEDs, the present SQW devices have been improved to the point that the encapsulating plastic fails under high electrical stress earlier than the diode itself. ( 1998 Published by Elsevier Science B.V. All rights...